Article
Multidisciplinary Sciences
Mojtaba Babaei, Salman Movahedirad
Summary: This study investigates the hydrodynamic behavior of gas-solid flow in a pseudo-two-dimensional cold circulation fluidized bed and its impact on the methanol-to-olefins (MTO) bed. Experimental and numerical simulation methods were used to examine the flow characteristics and mixing behavior. The findings show that asymmetric baffles play a crucial role in enhancing the mixing behavior, and the low mixing region of the bed limits the diameter of bubbles.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Subhodeep Banerjee, Mehrdad Shahnam, William A. Rogers, Robin W. Hughes
Summary: Interest in circulating fluidized bed (CFB) boilers as a power generation technology has increased due to advantages such as increased combustion efficiency and the ability to use lower rank fuels. CFB combustors operate at lower temperatures, reducing NOx emissions, and SO2 emissions can be controlled through the addition of sulfur sorbents.
Article
Energy & Fuels
Mei Yang, Gang Wang, Jian-Nian Han, Cheng-Di Gao, Jin-Sen Gao
Summary: To produce low olefin gasoline with high octane number, operating conditions were optimized in a Fischer-Tropsch (F-T) wax fluid catalytic cracking (FCC) unit. Experimental results showed that under specific conditions, the olefin content in gasoline could be reduced while causing a loss in octane number. To address this issue, a novel FCC process using a turbulent fluidized bed (TFB) reactor was proposed, which improved the reduction of olefins and the increase of aromatics. Although there was a decrease in gasoline yield, the aromatic content and octane number were significantly improved.
Article
Engineering, Chemical
Pilaiwan Chaiwang, Hannarong Chitcharoenyoo, Pornpote Piumsomboon, Benjapon Chalermsinsuwan
Summary: This study investigated the three-dimensional computational fluid dynamics (3D-CFD) of a pulsating flow applied to the fluid catalytic cracking (FCC) reaction in the riser of a circulating fluidized bed reactor. By considering the operating parameters of pulsating flow, it was found that frequency and type of the waveform significantly affect the reactant conversion level and product yield percentages.
Article
Thermodynamics
Yanxiang Du, Jin Liang, Shiliang Yang, Jianhang Hu, Guirong Bao, Hua Wang
Summary: This study simulated the CO methanation process in a three-dimensional bubbling fluidized bed using the reactive multiphase-particle-in-cell method. The model considers the hydrodynamics, chemical reactions, and heat and mass transfer between gas and catalyst. The results showed that the CO methanation mainly occurred in the dense phase region, and the gas inlet velocity and operating temperature had a significant effect on the heat transfer coefficient of the catalyst particles. Additionally, the ratio of CO/H2 had an inverse relationship with the gas production of CH(4).
Review
Chemistry, Physical
Hugo de Lasa
Summary: The CREC Riser Simulator is a mini-fluidized bench scale unit that allows the evaluation of catalyst performance and catalytic reaction kinetics. It has been widely used in universities and companies globally and is capable of developing simulations for various scenarios in fluidized bed catalytic and heterogeneous reactors.
Article
Thermodynamics
Xin Pan, Jiang Qin, Silong Zhang, Wen Bao
Summary: Precooling technology with a low-temperature endothermic fuel is a potential solution for the reduction of specific impulse in hydrocarbon-fueled turbojet engines. Methanol cracking reaction can enhance the cooling effect but may decrease the compactness of the precooler with an increase in the longitudinal pitch-to-diameter ratio. Decreasing the transverse pitch-to-diameter ratio can increase the cooling effect but will result in significant pressure loss.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Wei Zhao, Jingjing Wang, Kunpeng Song, Zhi Xu, Liping Zhou, Hongwei Xiang, Xu Hao, Yong Yang, Yongwang Li
Summary: The study focuses on investigating the effects of operating conditions on the catalytic cracking performance of FTS wax using an industrial beta-zeolite based catalyst in a riser reactor, and developing an eight-lumped kinetic model for product selectivity description and simulation. The theoretical prediction aligns well with experimental data, providing valuable insights for reactor scale-up and operating condition optimization in the process.
Article
Energy & Fuels
Laurien A. Vandewalle, Guy B. Marin, Kevin M. Van Geem
Summary: A new Euler-Euler based code, catchyFOAM, has been developed for simulating gas-solid fluidized bed reactors with microkinetic models for both gas phase and heterogeneous catalyst. The code is validated by comparing with ideal plug flow simulations, demonstrating its potential in designing novel reactors and optimizing processes involving catalytic surface chemistry.
Article
Engineering, Chemical
Yusuke Mori, Daisuke Okazaki, Gento Mogi
Summary: Japan and the European Union are facing declining petroleum demand due to global environmental initiatives. This study used simulation software to model and compare a typical fluid catalytic cracking (FCC) unit, aiming to develop alternative products and operational conditions. The results showed that using the slurry discharged from the FCC unit as a feedstock or introducing it into a delayed coker unit can increase yields and maximize profitability within specific temperature ranges.
Article
Engineering, Chemical
Caixia Han, Youhao Xu, Bona Lu, Hao Wu, Wei Wang
Summary: This study investigates the flow regime transition and regulation mechanism in diameter-transformed reactors using multiscale CFD simulations and twelve-lump kinetics. The results show that a high-concentration choking plateau appears in the new reactor when considering reactions, while it becomes a slowly ascending slope under cold-model conditions. Changing the particle circulating mode can stabilize the flow behaviors and product yield.
Article
Engineering, Chemical
Hai Zhao, Jiawei Bian, Bohan Wang, Jigang Zhao, Feng Ju, Hao Ling
Summary: In this study, the flue gas emissions of CO2, N2O, and CH4 from three typical FCC units were investigated. It was found that CO2 is the dominant greenhouse gas emitted, accounting for over 99% of total emissions. Moreover, the coke content and composition on the spent catalysts were found to directly affect GHG emissions.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Luis Alberto De la Flor-Barriga, Ursula Fabiola Rodriguez-Zuniga
Summary: This study simulated the catalytic pyrolysis of HDPE using computational fluid dynamics and analyzed the behavior of a designed fluidized bed reactor unit. The results provide insights into the physical behavior and best operating conditions for this technology.
Article
Engineering, Chemical
Zihan Yan, Yiping Fan, Chunxi Lu, Mengxi Liu, Sheng Chen, Chunming Xu, Xiaotao Bi
Summary: A counter-current feed injection scheme is proposed to enhance the mixing and reaction efficiency in the injection zone of riser reactors. Experimental and numerical simulation results demonstrate that the new injection technology improves particle distribution and reduces coke formation, leading to increased yields of gasoline and liquefied petroleum gas (LPG). Further application of the counter-current feed injection technology in an industrial pyridine synthesis system shows a significant reduction in coke formation and stable operation for 2 years.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Energy & Fuels
Jin Liang, Huili Liu, Shiliang Yang, Jianhang Hu, Hua Wang
Summary: A multiphase particle-in-cell model was used to simulate the reactive multiphase flow patterns and reaction behaviors inside a pilot-plant MTO fluidized reactor. The results show that the thermochemical properties of catalytic particles and gas phase thermal characteristics have high heat transfer coefficient in the crucial reaction zone and freeboard zone. Gas-solid hydrodynamics and gas concentrations exhibit non-uniform distribution. The reactant gas flow rate has a significant impact on product distributions and gas thermal properties. Increasing reaction pressure enhances heat transfer. The vertical dispersion coefficient of catalyst is two orders of magnitude larger than the horizontal ones.
Article
Thermodynamics
Xin Zhou, Shangfeng Li, Yuan Wang, Jiewenjing Zhang, Zhibo Zhang, Changgui Wu, Xiaobo Chen, Xiang Feng, Yibin Liu, Hui Zhao, Hao Yan, Chaohe Yang
Summary: The study introduced a novel hierarchical catalytic cracking process for crude oil, leading to increased conversion rate and olefin yields. Optimization of key operating parameters improved hydrogen and carbon atoms efficiency, net present value, and internal rate of return. Additionally, the novel process reduced greenhouse gas emissions, wastewater generation, and non-renewable energy consumption compared to conventional processes.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Jinling Zhang, Xin Jin, Hui Zhao, Chaohe Yang
Summary: A synergistic advanced oxidation process was developed to degrade organic pollutants in spent sulfuric acid. The optimized conditions achieved high removal rates of total organic carbon and color. The developed OBC catalyst showed good stability and resistance to acid corrosion.
Article
Energy & Fuels
Munendra Pal Singh, Abdallah Sofiane Berrouk, Suneet Singh
Summary: The thermal-hydraulic behavior of supercritical water reactors with a parallel channel configuration was examined through a non-linear instability analysis. Different working supercritical fluids, varied heat-flux and flow-rate conditions, and channel inclinations were taken into account. The major findings show that both water and carbon dioxide experienced density wave oscillations at low subcooling numbers, and static instability characteristics were observed for supercritical water. Moreover, the heat flux and inclination angle had an impact on system stability, while parallel channels performed similarly to a single-channel system at equal heat flux. Stable and unstable limit cycles with out-of-phase oscillation characteristics were observed in dynamic stability regions.
Article
Mechanics
Ahmed M. Alatyar, Abdallah S. Berrouk
Summary: The challenge of reducing the carbon footprint and development costs of chemical processes can be achieved through process intensification (PI). Different PI technologies have been investigated, with rotating packed bed (RPB) technology receiving attention for its potential in intensification. This study presents a complete derivation of dry pressure drop in RPB, incorporating the radial distribution of gas tangential velocity and viscous shear stress. Machine learning techniques are used to derive the inertial resistance coefficient, and an artificial neural network is implemented to relate it to gas flow rate and rotating speed. Results show that using a machine learning algorithm improves the prediction of RPB dry pressure drop compared to relying on empirical models.
Article
Engineering, Chemical
Jixiang Liu, Xin Zhou, Gengfei Yang, Hui Zhao, Zhibo Zhang, Xiang Feng, Hao Yan, Yibin Liu, Xiaobo Chen, Chaohe Yang
Summary: Obtaining polymer-grade ethylene from wasted refinery gas through a direct separation process has significant economic and environmental importance. The novel SCOAS process and heat pump-assisted thermal integration optimization (HPSCOAS) are proposed as efficient approaches. Compared to the traditional process, HPSCOAS has lower total annual cost and better environmental advantages.
CHINESE JOURNAL OF CHEMICAL ENGINEERING
(2023)
Article
Thermodynamics
Zhenxing Cai, Pingxin Li, Hui Zhao, Lingyan Wang, Xiaobo Chen, Chaohe Yang
Summary: The solubility of cyclohexanone, tert-butanol, and 1,4-dioxane in various xylenes and ethylbenzene was measured, and it was found that the solubility increased with temperature. The Wilson model was the most accurate in fitting the solubility results. Furthermore, the dissolution behaviors of the compounds were analyzed using the Wilson model, and it was determined that the process is spontaneous and endothermic. The obtained solubility results have implications for the development and improvement of industrial separation processes involving these compounds.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Thermodynamics
Zhenxing Cai, Gengfei Yang, Hui Zhao, Xiaobo Chen, Chaohe Yang
Summary: A series of isobaric vapor-liquid equilibrium experiments were conducted on binary mixtures of methylcyclohexane with para-, ortho-, and meta-xylenes and ethylbenzene. Gas chromatography was used to determine the composition of the vapor and liquid phases, and the thermodynamic consistency of the measured results was checked. Activity coefficient models were fitted to the measured equilibrium data, and the resulting vapor-liquid equilibrium diagrams matched well with experimental data.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Chemistry, Applied
Zhenxing Cai, Gengfei Yang, Hui Zhao, Xiaobo Chen, Chaohe Yang
Summary: The crystallization kinetics of para-xylene was measured using morphology and DSC methods. Solubility data from DSC experiments were fitted using activity coefficient model and solid-liquid phase equilibrium theory, while the rates of nucleation, growth, aggregation, and breakage were determined from morphological experiments. A population balance equation was used to model particle size distribution and validated with experimental data. The effects of crystallizer operating temperature and residence time on product yield were investigated, suggesting an optimal temperature and residence time for the crystallization process. The models developed can be applied in process design and optimization.
ORGANIC PROCESS RESEARCH & DEVELOPMENT
(2023)
Article
Mechanics
Fahad N. N. Al-Otaibi, Abdallah S. S. Berrouk, Hongliang Xiao
Summary: In this study, the dry reforming of methane (DRM) was simulated in fluidized-bed reactors using a multiphase particle-in-cell model. The effect of different gas velocities on bed hydrodynamics, conversion, and yield of product gases were investigated. The results were in good agreement with experimental data and showed that the turbulent-fluidized bed had the best reactor performance. The study highlights the significance of gas velocity on DRM conversion, yield, and overall reactor performance in fluidized-bed reactors.
Article
Chemistry, Multidisciplinary
Zhenxing Cai, Hui Zhao, Pingxin Li, Xiaobo Chen, Chaohe Yang
Summary: An activity coefficient-based model was proposed to predict the saturated concentrations in organic solid-liquid equilibrium, and the binary parameters of xylene mixtures were experimentally obtained. Additionally, a novel monocular 3D reconstruction technique was developed to measure crystal size and used to derive the kinetics of nucleation and growth of para-xylene crystals. A multi-dimensional population balance equation was then used to predict the particle size distribution in the crystallizer, and an algorithm was designed to simulate and optimize the economic benefit of the crystallization separation process. As a result, it became possible to predict the optimal coolant flowrate and inlet temperature, as well as the feed flowrate for a crystallization process with given operating conditions and device parameters.
Article
Engineering, Chemical
Fahad Al-Otaibi, Hongliang Xiao, Abdallah S. Berrouk, Kyriaki Polychronopoulou
Summary: In this study, a numerical model using the Eulerian-Lagrangian approach was developed to simulate the dry reforming of methane (DRM) process in lab-scale packed and fluidized beds. The results showed that replacing steam reforming of methane (SRM) with DRM greatly improves the industry's utilization of greenhouse gases (GHGs) and reduces carbon footprint. The effects of temperature, inlet composition, and contact spatial time on DRM in packed beds were investigated. The role of methane decomposition reaction in coke formation at high temperatures was also examined.
Article
Engineering, Multidisciplinary
Saleem Nasir, Abdallah S. Berrouk
Summary: This study explores the dynamics of magnetohydrodynamic and mix convectional boundary-layer flow of couple stress Casson nanofluid (CSCNF) using a 3D stretchable surface. The addition of active and passive control mechanisms for nanoscales adds a new dimension to the exploration. The analysis takes into account the effects of non-Fourier and non-Fickian heat and mass flux, thermophoresis, and Brownian diffusion. Through the use of an artificial neural network (ANN) with the Levenberg-Marquardt Algorithm (LMA), accurate results are obtained for the MHD-3DCSCNF problem. The performance validation of the ANN is done through various metrics, demonstrating its robustness and reliability.
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
(2023)
Article
Engineering, Chemical
Fahad N. Alotaibi, Abdallah S. Berrouk, Muhammad Saeed
Summary: This research utilized computational fluid dynamics, artificial neural networks, and multiobjective genetic algorithms to optimize the dry reforming of methane, resulting in valuable insights for the development of more efficient and productive reactors.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Thermodynamics
Muhammed Saeed, Abdallah S. Berrouk, Yasser F. Al Wahedi, Khurshid Alam, Munendra P. Singh, M. Salman Siddiqui, Eydhah Almatrafi
Summary: This research focuses on reducing pumping power by investigating efficient channel geometries. The study finds that straight channel precoolers can reduce pumping power by half compared to zigzag channels, but at the cost of a threefold increase in length. The optimal design emphasizes that straight-channel designs can achieve peak efficiency, even though their size may be up to eight times larger than zigzag-channel designs. Meanwhile, precooler designs with zigzag channels strike a balance between cycle efficiency and size under specific conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Huaitao Zhu, Gongnan Xie, Abdallah S. Berrouk, Sandro Nizetic
Summary: The study develops a simplified boiling temperature boundary condition (BTBC) to analyze the performance of printed circuit heat exchanger (PCHE) with semicircular channels. CFD is used to simulate fluid and heat flows in PCHE semicircular channels as a precooler in a combined supercritical CO2 Brayton/Organic Rankine cycle. The results compare the BTBC to heat flux boundary condition (HFBC) and evaluate the heat transfer correlations for SCO2 for both conditions. The study finds that the junctions between different temperature sections have the greatest impact on heat transfer coefficients and the flow from the overheated section to the evaporation section accelerates the increase of these coefficients. The buoyancy effect along the flow direction is also significant and different for the two tested boundary conditions. Additionally, the BTBC has a larger effect on the heat transfer coefficient at different junctions of the precooler compared to the HFBC. The modified Jackson correlation provides a better prediction compared to the Gnielinski correlation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
A. A. Aganin, A. I. Davletshin
Summary: A mathematical model of interaction of weakly non-spherical gas bubbles in liquid is proposed in this paper. The model equations are more accurate and compact compared to existing analogs. Five problems are considered for validation, and the results show good agreement with experimental data and numerical solutions. The model is also used to analyze the behavior of bubbles in different clusters, providing meaningful insights.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Hao Wu, Jie Sun, Wen Peng, Lei Jin, Dianhua Zhang
Summary: This study establishes an analytical model for the coupling of temperature, deformation, and residual stress to explore the mechanism of residual stress formation in hot-rolled strip and how to control it. The accuracy of the model is verified by comparing it with a finite element model, and a method to calculate the critical exit crown ratio to maintain strip flatness is proposed.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Shengwen Tu, Naoki Morita, Tsutomu Fukui, Kazuki Shibanuma
Summary: This study aimed to extend the finite element method to cope with elastic-plastic problems by introducing the s-version FEM. The s-version FEM, which overlays a set of local mesh with fine element size on the conventional FE mesh, simplifies domain discretisation and provides accurate numerical predictions. Previous applications of the s-version FEM were limited to elastic problems, lacking instructions for stress update in plasticity. This study presents detailed instructions and formulations for addressing plasticity problems with the s-version FEM and analyzes a stress concentration problem with linear/nonlinear material properties.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Bo Fan, Zhongmin Wang
Summary: A 3D rotating hyperelastic composite REF model was proposed to analyze the influence of tread structure and rotating angular speed on the vibration characteristics of radial tire. Nonlinear dynamic differential equations and modal equations were established to study the effects of internal pressure, tread pressure sharing ratio, belt structure, and rotating angular speed on the vibration characteristics.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
X. W. Chen, Z. Q. Yue, Wendal Victor Yue
Summary: This paper examines the axisymmetric problem of a flat mixed-mode annular crack near and parallel to an arbitrarily graded interface in functionally graded materials (FGMs). The crack is modeled as plane circular dislocation loop and an efficient solution for dislocation in FGMs is used to calculate the stress field at the crack plane. The analytical solutions of the stress intensity factors are obtained and numerical study is conducted to investigate the fracture mechanics of annular crack in FGMs.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Xumin Guo, Jianfei Gu, Hui Li, Kaihua Sun, Xin Wang, Bingjie Zhang, Rangwei Zhang, Dongwu Gao, Junzhe Lin, Bo Wang, Zhong Luo, Wei Sun, Hui Ma
Summary: In this study, a novel approach combining the transfer matrix method and lumped parameter method is proposed to analyze the vibration response of aero-engine pipelines under base harmonic and random excitations. The characteristics of the pipelines are investigated through simulation and experiments, validating the effectiveness of the proposed method.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Xiangyu Sha, Aizhong Lu, Ning Zhang
Summary: This paper investigates the stress and displacement of a layered soil with a fractional-order viscoelastic model under time-varying loads. The correctness of the solutions is validated using numerical methods and comparison with existing literature. The research findings are of significant importance for exploring soil behavior and its engineering applications under time-varying loads.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Thuy Dong Dang, Thi Kieu My Do, Minh Duc Vu, Ngoc Ly Le, Tho Hung Vu, Hoai Nam Vu
Summary: This paper investigates the nonlinear torsional buckling of corrugated core sandwich toroidal shell segments with functionally graded graphene-reinforced composite (FG-GRC) laminated coatings in temperature change using the Ritz energy method. The results show the significant beneficial effects of FG-GRC laminated coatings and corrugated core on the nonlinear buckling responses of structures.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Zhihao Zhai, Chengbiao Cai, Qinglai Zhang, Shengyang Zhu
Summary: This paper investigates the effect of localized cracks induced by environmental factors on the dynamic performance and service life of ballastless track in high-speed railways. A mathematical approach for forced vibrations of Mindlin plates with a side crack is derived and implemented into a train-track coupled dynamic system. The accuracy of this approach is verified by comparing with simulation and experimental results, and the dynamic behavior of the side crack under different conditions is analyzed.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
James Vidler, Andrei Kotousov, Ching-Tai Ng
Summary: The far-field methodology, developed by J.C. Maxwell, is utilized to estimate the effective third order elastic constants of composite media containing random distribution of spherical particles. The results agree with previous studies and can be applied to homogenization problems in other fields.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Kim Q. Tran, Tien-Dat Hoang, Jaehong Lee, H. Nguyen-Xuan
Summary: This study presents novel frameworks for graphene platelets reinforced functionally graded triply periodic minimal surface (GPLR-FG-TPMS) plates and investigates their performance through static and free vibration analyses. The results show that the mass density framework has potential for comparing different porous cores and provides a low weight and high stiffness-to-weight ratio. Primitive plates exhibit superior performance among thick plates.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Bence Hauck, Andras Szekrenyes
Summary: This study explores several methods for computing the J-integral in laminated composite plate structures with delamination. It introduces two special types of plate finite elements and a numerical algorithm. The study presents compact formulations for calculating the J-integral and applies matrix multiplication to take advantage of plate transition elements. The models and algorithms are applied to case studies and compared with analytical and previously used finite element solutions.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Wu Ce Xing, Jiaxing Wang, Yan Qing Wang
Summary: This paper proposes an effective mathematical model for bolted flange joints to study their vibration characteristics. By modeling the flange and bolted joints, governing equations are derived. Experimental studies confirm that the model can accurately predict the vibration characteristics of multiple-plate structures.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Pingchao Yu, Li Hou, Ke Jiang, Zihan Jiang, Xuanjun Tao
Summary: This paper investigates the imbalance problem in rotating machinery and finds that mass imbalance can induce lateral-torsional coupling vibration. By developing a model and conducting detailed analysis, it is discovered that mass imbalance leads to nonlinear time-varying characteristics and there is no steady-state torsional vibration in small unbalanced rotors. Under largely unbalanced conditions, both resonant and unstable behavior can be observed, and increasing lateral damping can suppress instability and reduce lateral amplitude in the resonance region.
APPLIED MATHEMATICAL MODELLING
(2024)
Article
Engineering, Multidisciplinary
Yong Cao, Ziwen Guo, Yilin Qu
Summary: This paper investigates the mechanically induced electric potential and charge redistribution in a piezoelectric semiconductor cylindrical shell. The results show that doping levels can affect the electric potentials and mechanical displacements, and alter the peak position of the zeroth-order electric potential. The doping level also has an inhibiting effect on the first natural frequency. These findings are crucial for optimizing the design and performance of cylindrical shell-shaped sensors and energy harvesters.
APPLIED MATHEMATICAL MODELLING
(2024)
