Article
Thermodynamics
S. A. Marzouk, Ahmad Aljabr, Fahad Awjah Almehmadi, Saeed Alqaed, Maisa A. A. Sharaf
Summary: In this study, the performance of a plate heat exchanger is numerically investigated using tungsten carbide (WC) nanoparticles with water. The effect of nanofluid mass concentration on various parameters such as Nusselt number, friction factor, exergy efficiency temperature, velocity, and pressure distribution is analyzed. The results show that increasing the Reynolds number and nanofluid mass concentration can enhance the Nusselt number and reduce the friction factor. The streamlines and contours of the temperature, velocity, and pressure distribution provide credible interpretations for the movements of WC-water nanofluids and an noticed improvement in heat transfer.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Wagd Ajeeb, Renato R. S. Thieleke da Silva, S. M. Sohel Murshed
Summary: This study investigates the performance of a compact gasketed plate heat exchanger using Al2O3 nanofluids. The experiment measured the thermophysical properties of the nanofluid samples and compared their performance with conventional heat transfer fluids. The results showed that increasing the concentration of nanoparticles improved heat transfer efficiency and energy efficiency.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
A. M. Alklaibi, L. Syam Sundar, Kotturu V. V. Chandra Mouli
Summary: Experimental investigation of MWCNT + Fe3O4/water hybrid nanofluids as a coolant for a plate heat exchanger showed improved exergy efficiency, thermal performance factor, and effectiveness compared to de-ionized water, indicating the potential for enhancing heat transfer efficiency. The study also revealed a tradeoff between flow rate and cost, suggesting that operating at 5 lpm would be the most cost-effective option.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
L. Syam Sundar, V Punnaiah, K. Sharma, Ali J. Chamkha, Antonio C. M. Sousa
Summary: The study aimed to analyze the heat transfer coefficient and thermal entropy generation of plate heat exchanger using water-based nanodiamond nanofluids. The experiments investigated the impact of Reynolds number, Peclet number, and particle volume loadings on heat transfer and entropy generation. Results showed significant improvements in heat transfer coefficient and Nusselt number with increased nanofluid particle loadings, with enhancements ranging from 32.50% to 55.47% compared to base fluid at specific conditions.
DIAMOND AND RELATED MATERIALS
(2021)
Review
Thermodynamics
M. M. Rashidi, Ibrahim Mahariq, Mohammad Alhuyi Nazari, Oussama Accouche, Muhammad Mubashir Bhatti
Summary: This article comprehensively reviews and discusses studies on entropy generation and exergy analysis of shell and tube heat exchangers, finding that modifying the thermo-physical properties of the fluids can improve efficiency, and the operating conditions of the heat exchangers play a crucial role in entropy generation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Multidisciplinary
R. M. Mostafizur, M. G. Rasul, M. N. Nabi, R. Haque, M. I. Jahirul
Summary: The performance of hybrid nanofluids in a flat plate solar collector was analyzed in this study based on various parameters. Five different base fluids were used to create five types of hybrid nanofluids containing CuO and MWCNT nanoparticles. The results showed that the CuO-MWCNT/water nanofluid performed the best in reducing entropy generation and had higher exergy efficiency and thermal performance.
Article
Thermodynamics
Dong Ho Nguyen, Boyeon Kweon, Jae -Sung Kwon, Taewan Kim, Somchai Wongwises, Ho Seon Ahn
Summary: This article introduces an innovative plate heat exchanger design that utilizes symmetric airfoil profile corrugation, resulting in reduced pressure drop and improved heat transfer performance. A parametric study is conducted to determine the optimal geometric configuration.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Mirza M. Shah
Summary: By comparing data from 25 sources, the study found that only 2 published correlations showed fairly good agreement with the data, while others had larger deviations. A new, more accurate and easier-to-use correlation was developed by modifying an existing one.
INTERNATIONAL JOURNAL OF REFRIGERATION
(2021)
Article
Thermodynamics
Saeed Mohebbi, Farzad Veysi
Summary: This study numerically investigated the performance of a small-sized plate heat exchanger with chevron type corrugation pattern and validated the results with experimental tests. The influence of flow regime and geometrical parameters such as chevron angle, corrugation depth, and corrugation pitch on the performance of the heat exchanger were evaluated. It was found that the angle of 60 degrees and the ratio of corrugation depth to pitch had significant effects on the heat transfer and friction characteristics of the heat exchanger.
APPLIED THERMAL ENGINEERING
(2021)
Article
Thermodynamics
L. Syam Sundar, Feroz Shaik
Summary: The thermodynamic, heat transfer and thermal performance factor of nanodiamond (ND) nanofluids in a shell and helical coiled tube heat exchanger were analyzed experimentally. The study investigated the effects of different particle volume loadings on these factors.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Energy & Fuels
Ting Chen, Wenhui Wang, Anping Wan, Ohkyung Kwon, Pengfei Wang, Qiang Zuo
Summary: The combined effects of heat transfer enhancement and pressure loss increment of LiBr solution-based nanofluids in plate heat exchangers are investigated. A correlation for predicting the Nusselt number of LiBr solution in a chevron plate heat exchanger is developed based on experimental data. The heat transfer coefficients and friction factors of Al2O3 nanofluid and MWCNT nanofluid are numerically calculated, showing higher heat transfer rates compared to LiBr solution. The appropriate selections of LiBr solution-based nanofluids for different application requirements are presented.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Thermodynamics
A. M. Alklaibi, L. Syam Sundar, A. C. M. Sousa
Summary: The experimental results demonstrate that the parameters are strongly influenced by changes in solar irradiation. The highest collector thermal efficiency is achieved by using 1.0 vol% ND/water nanofluid, showing a 12.7% increase compared to pure water. Furthermore, the study reveals that the nanofluid is more sensitive to entropy generation than water as the working fluid.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Review
Chemistry, Multidisciplinary
Ali Almertejy, Muhammad M. Rashid, Naser Ali, Salah Almurtaji
Summary: This article introduces the methods of using nanofluids to improve gas turbine efficiency, including experimental and numerical studies. The general principles governing turbines are described, and commonly used types of heat exchangers are introduced. The application of nanofluids in heat exchangers is reviewed.
Article
Thermodynamics
L. Syam Sundar, Feroz Shaik, K. V. Sharma, V. Punnaiah, Antonio C. M. Sousa
Summary: This study experimentally investigates the effects of nanofluids and longitudinal strip inserts on Nusselt number, friction factor, exergy efficiency, and thermal entropy generation in a circulating conduit. The results show that hybrid nanofluids with longitudinal strip inserts can significantly enhance heat transfer, reduce friction factor and thermal entropy generation.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Thermodynamics
R. Shamsdanesh, S. Jafarmadar, N. Javani
Summary: A novel geometry plate heat exchanger was studied, considering entropy generation, heat transfer improvement number, and effectiveness to determine the best model. Different non-uniform cross-sectional configurations and flow directions were investigated to improve heat transfer efficiency. The results showed significant enhancements in heat transfer rate, improvement number, and effectiveness compared to conventional heat exchangers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Engineering, Multidisciplinary
R. Ramesh Kumar, J. M. Babu, Bahaa Saleh, H. Fayaz, A. Chandrashekar, Tanya Gera, Kottakkaran Sooppy Nisar, C. Ahamed Saleel
Summary: Friction welding is a solid-state joining method that achieves a strong bond through continuous acts of forging pressure and rotational drives. This study experimentally investigated the microhardness and structural analyses of friction-welded joints, evaluated the effects of process parameters on properties and temperature distribution using ANOVA, and compared the results with finite element analysis using ANSYS R16.2. The optimal process parameters were determined to be a friction time of 5s, rotation speed of 2100rpm, friction pressure of 80MPa, and forging pressure of 84.5MPa.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
L. Syam Sundar, Feroz Shaik
Summary: Experimental research was conducted on the heat transfer, entropy generation, and exergy efficiency of ethylene glycol (EG) based nanodiamond (ND) nanofluids flowing in a circular tube. The study showed that the heat transfer coefficients of ND nanofluids were higher than that of the base fluid, and the improvement in entropy generation and exergy efficiency depended on the volume concentration of the nanofluid and Reynolds number.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Mechanical
Lingala Syam Sundar, Feroz Shaik, Zafar Said
Summary: Novel MXene materials were dispersed into a mixture of ionic liquid [MMIM][DMP] and water to create ionanofluids. The thermophysical properties of the ionanofluids were experimentally studied at different particle weight loadings and temperatures. Three models were used to analyze the figures-of-merit of the ionanofluids under turbulent flow conditions. Results showed that the thermal conductivity of the ionanofluid at 1.0 wt% increased by 56.62% at 60 degrees C, and the dynamic viscosity increased by 17.66% at 20 degrees C. The obtained thermophysical properties were fitted into regression equations, and the figures-of-merit of the ionanofluids were found to be greater than 1, indicating their effectiveness as heat transfer fluids.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Kotturu V. V. Chnadra Mouli, L. Syam Sundar, A. M. Alklaibi, Zafar Said, K. V. Sharma, V. Punnaiah, Antonio C. M. Sousa
Summary: This paper experimentally analyzed the thermal efficiency, Nusselt number, exergy efficiency, thermal entropy generation, and frictional entropy generation of natural circulation of water-based multi-walled carbon nanotubes nanofluids flow in a flat plate collector. The results showed that the heat transfer coefficient, Nusselt number, and exergy efficiency increased gradually from 09:00 hr to a maximum value at 13:00 hr and then decreased gradually until the end of the test at 16:30 hr. Regression equations were developed for Nusselt number and friction factor for two time durations. At the peak value of 13:00 hr, the thermal and exergy efficiencies increased significantly compared to water.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Engineering, Multidisciplinary
L. Syam Sundar
Summary: The present study experimentally investigated the Nusselt number, exergy efficiency, entropy generation, and thermal performance factor of nanodiamond-Fe3O4/water hybrid nanofluids in a tube with twisted tape inserts. The experiments were conducted under turbulent flow regime with different Reynolds numbers, volume loadings, and twisted tape inserts. The results showed that the addition of nanofluids and twisted tape inserts significantly improved the heat transfer and energy efficiency, while reducing thermal entropy generation. New correlations for Nusselt number and friction factor were proposed.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
L. Syam Sundar, B. Deepanraj, Hiren K. Mewada
Summary: This study experimentally investigated the heat transfer coefficient, Nusselt number, effectiveness, and number of transfer units of water mixed multi-walled carbon nanotubes nanofluids passing through a tube-in-tube heat exchanger. The parameters were predicted using adaptive neuro fuzzy inference system (ANFIS). The developed structure successfully predicted 96% of variation in all parameters.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Lingala Syam Sundar, Abdulaziz Mohammed Alklaibi, Kotturu V. V. Chandra Mouli, Deepanraj Balakrishnan
Summary: Experimental research was conducted on the heat transfer coefficient and thermal performance of a heat pipe using hybrid nanorefrigerants of R134a/mineral oil (5:1% weight percent) and nanodiamond+Fe3O4. The hybrid nanoparticles were created using an in-situ growth approach and characterized by X-ray diffraction. The results showed that the use of hybrid nanofluids reduced the wall temperatures in the evaporator and condenser sections of the heat pipe and improved the heat transfer coefficients. The thermal performance of the heat pipe was enhanced with increasing particle loadings.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
L. Syam Sundar, Hiren K. Mewada
Summary: The thermophysical properties of ZrO2/ethylene glycol nanofluids at different concentrations were experimentally determined. A two-step method was used to prepare stable nanofluids, and a multi-layer perceptron feed-forward back propagation artificial neural network was developed to predict the target property.
JOURNAL OF NANOFLUIDS
(2023)
Article
Energy & Fuels
S. K. Gugulothu, B. Deepanraj, Ragireddy Venkat Reddy, L. Syam Sundar
Summary: An investigation was conducted on a CRDI engine using a blended fuel (WCO20) to explore the impact of fuel injection strategies on engine characteristics. It was found that the use of WCO20 increased fuel consumption and nitrogen oxide emission while decreasing brake thermal efficiency at a base fuel injection pressure of 40 MPa. The physical properties of the WCO20 fuel blend, such as volatility and viscosity, influenced combustion phenomena and reduced engine performance. Increasing fuel injection pressure led to improved combustion characteristics and higher brake thermal efficiency.
Correction
Energy & Fuels
Joseph A. Oyebanji, Sunday O. Oyedepo, Olawumi T. Oyebanji, Alaba O. Araoyinbo, Oluwaseun Kilanko, Joseph O. Dirisu, Bahaa Saleh
Article
Environmental Sciences
Sathiya Satchi Christopher, Amrit Kumar Thakur, Soumya Kanti Hazra, Swellam Wafa Sharshir, Adarsh Kumar Pandey, Saidur Rahman, Punit Singh, Lingala Syam Sunder, Arun Kumaradas Raj, Ramasamy Dhivagar, Ravishankar Sathyamurthy
Summary: The aim of this research was to develop a model for a solar refrigeration system that utilizes an External Compound Parabolic Collector and a thermal energy storage system for solar water heating in Chennai, India. The system parameters were optimized using TRNSYS software and the optimized system was found to meet 80% of hot water requirements with high annual energy and exergy efficiency. Additionally, the connection of the solar refrigeration system with an optimized solar water heating system demonstrated the potential for efficiently generating cooling energy. The optimization of system parameters and the use of exergy analysis provide valuable insights into the thermal behavior and performance of the system.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
L. Syam Sundar, Venkata Ramayya Ancha, Feroz Shaik, Jamal Nayeh
Summary: The advantages of hybrid nanofluids in heat transfer are significant. Thermophysical properties were examined before analyzing heat transfer coefficient in thermal devices. Stable rGO/nanodiamond hybrid nanofluids were manufactured using different ratios of water and ethylene mixture. Experimental analysis was conducted on the thermophysical characteristics at various particle concentrations and temperatures. Results showed an increase in thermal conductivity and viscosity compared to base fluids, but the figures of merit for hybrid nanofluids were less than unity.
JOURNAL OF ENHANCED HEAT TRANSFER
(2023)
Review
Engineering, Multidisciplinary
Lujain Abdullatif Alshuhail, Feroz Shaik, L. Syam Sundar
Summary: There is a tremendous need for energy worldwide, primarily in industrial sectors, and the only option to meet this demand is through the utilization of fossil fuels. However, this usage leads to global warming and environmental pollution. In order to address the finite availability of fossil fuels, it is crucial to rely on renewable energy sources. Solar energy is the most promising renewable energy source and is widely accessible. By using nanofluids and hybrid nanofluids in solar thermal systems, it is possible to increase the thermal efficiency of solar collectors.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Ali Alshamrani
Summary: This research aims to improve the productivity of solar stills by using double-glazing with external condenser and nano-phase change material. Experimental findings show that these modifications can significantly enhance the evaporation and condensation processes, resulting in higher water and glass temperatures, increased distillate production, and improved freshwater production. The highest efficiency was achieved when using double glazing, condenser, and nano-paraffin wax phase change material.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Inorganic & Nuclear
Ratchagaraja Dhairiyasamy, Bahaa Saleh, Mohan Govindasamy, Ayman A. Aly, Asif Afzal, Yasser Abdelrhman
Summary: In this study, the effectiveness of using silver nanoparticles of different particle sizes to improve the heat transfer properties of a car radiator was investigated. It was found that smaller nanoparticles exhibited higher thermophysical properties. Correlations were developed to estimate the heat transfer properties and friction factor characteristics based on experimental Nusselt numbers and friction factor values.
INORGANIC AND NANO-METAL CHEMISTRY
(2023)
Article
Thermodynamics
Yunxia Ma, Fei Liu, Honggang Pan, Hongjian Zhang, Shuxia Yan, Ailing Zhang
Summary: This paper proposes a dynamically tunable and switchable perfect infrared absorber that exhibits excellent electrical regulation performance and high absorptance. The absorption mechanism is explained using a multiple interference model, and it is proven to be polarization insensitive.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
F. J. dos Santos, G. S. M. Martins, M. Strobel, L. Beckedorff, K. V. de Paiva, J. L. G. Oliveira
Summary: This study investigates the effects of inlet conditions and plate's features on the thermal-flow performance of a gasket plate heat exchanger (GPHE) and assesses the impact of a modified tightening distance on its performance. No systematic study on the combined effects of inlet conditions and assembly accuracy on GPHE performance has been conducted before.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Alok K. Ray, Dibakar Rakshit, K. Ravi Kumar, Hal Gurgenci
Summary: The low thermal conductivity of phase change materials limits the heat transfer rate and application of latent heat storage systems. This numerical study examines the impact of two passive heat transfer enhancement techniques on the thermal performance of a latent heat storage system. The results show that the orientation and position of the heat transfer fluid tube have significant effects on the charging duration, while the discharging duration remains unchanged. The combined effect of orientation and eccentricity reduces the charging duration, but increases the discharging duration compared to the concentric domain.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Yalu Han, Yanlong Wang, Chenyang Liu, Xinmin Hu, Yin An, Zhengcai Li, Jiaxun Jiang, Lizhi Du
Summary: This paper investigates the calculation method of thermal conductivity in NAPLs-contaminated soils. By establishing NAPLs-contaminated soil models and using the Lattice Boltzmann Method (LBM) for calculation, an optimized three-dimensional model with high computational accuracy and efficiency is obtained. The study also finds that saturation and Nz parameters have a significant impact on calculation time, while the thermal conductivity of the two-dimensional model is more sensitive to anisotropy. The influence of porosity and NAPLs content on thermal conductivity should be considered during in-situ thermal desorption.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Mostafa Taha, Song Zhao, Aymeric Lamorlette, Jean-Louis Consalvi, Pierre Boivin
Summary: For the first time, large-eddy simulations (LES) of the near-field region of large-scale fire plumes were performed using a pressure-based Lattice Boltzmann method (LBM) with low-Mach number approximation. The simulations showed quantitative agreement with experimental data and were consistent with previously-published numerical studies. The study demonstrated the computational efficiency of the proposed LBM solver in tackling fire-induced flows, suggesting LBMs as a good alternative candidate for modeling fire-related problems.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Weixin Zhang, Yehang Xie, Yuqiang Ding, Zhao Liu, Zhenping Feng
Summary: This study investigated the impact of upstream slot leakage on the endwall film cooling characteristics of turbine blades. Pressure Sensitive Paint (PSP) technology was used to measure the film cooling characteristics, and numerical analysis was conducted to evaluate the aerodynamic performance. It was found that increasing the mass flow ratio of the upstream slot enhanced film cooling, decreased aerodynamic losses, and reduced the strength of passage vortex. However, reducing the distance between the slot and the blade leading edge only enhanced film cooling without affecting the leakage coverage area.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Rui Zhang, Zhen-lei Li, Yan-sheng Zhang, Dong Chen, Guo Yuan
Summary: This study discusses the heat transfer behavior of different jet forms on steel tubes. The results show that the annular jet performs better in terms of cooling intensity and uniformity. The cooling performances of the two jet forms are similar when the steel tube size is small. Therefore, the planar jet can be considered for smaller diameters due to its simplicity, low cost, and convenience in application.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
A. R. Khoei, A. M. Orvati Movaffagh, A. Rezaei Sameti
Summary: This paper presents a comprehensive study on the thermo-mechanical characteristics of oxide-coated aluminum nano-powder. It is found that the thermal conductivity of oxide-coated aluminum nano-powder is significantly lower than that of the bulk aluminum, and it is affected by the density and temperature.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Yanjin Wang, Jintao Xiong, Lingyu Chen, Zhihai Lv, Qian Wang
Summary: A solar radiation transfer model for spray cooling double skin facade (SC-DSF) is proposed in this study. The model is validated by experimental results and various influence factors are analyzed. The effectiveness of adjusting droplet coverage rate and size is also evaluated.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Bostjan Zajec, Blaz Mikuz, Anil Kumar Basavaraj, Marko Matkovic, Matej Tekavcic, Martin Draksler, Leon Cizelj, Bostjan Koncar
Summary: We have developed an advanced experimental setup to investigate flow and heat transfer in an annular channel. The setup allows heat transfer measurements and flow visualization using a temperature-controlled inner tube. Measurements can be conducted in both single-phase and two-phase flow regimes. The setup ensures a uniform velocity field in the annular channel using specially designed inlet and outlet headers. The inner copper tube is heated by water and contains turbulators for enhanced heat transfer and thermocouples for temperature measurement. A three-dimensional conjugate heat transfer CFD model has been developed and validated to accurately estimate heat losses in the setup. This study demonstrates the importance of numerical simulations in improving the interpretation of complex experimental results.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Weijie Chen, Ke Wang, Yongqing Wang, Shantung Tu, Zunchao Liu, Huijuan Su
Summary: In this study, a novel gradient porosity transpiration cooling plate structure (GP-TCPS) is proposed to alleviate heat transfer deterioration caused by non-uniform temperature distribution in transpiration cooling plate structure (TCPS). Computational fluid dynamics (CFD) and response surface method (RSM) were used for qualitative and quantitative analysis of the flow and heat transfer of GP-TCPS. The optimized structure of GP-TCPS significantly improves temperature uniformity, injection pressure, and average cooling efficiency compared to traditional TCPS.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
R. Essam, A. Elsaid, W. K. Zahra
Summary: This study presents a novel bioheat model for simulating heat transfer in skin tissue. The model offers an improved representation of thermal dynamics in the skin and has been validated using numerical solutions and experimental measurements. The study highlights the importance of incorporating vascular inlet parameters and thermal relaxation effects in the thermal profile, and suggests potential applications in thermal therapy and wound healing.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Dongbo Shi, Tao Xu, Zifeng Chen, Di Zhang, Yonghui Xie
Summary: The cooling structure design of turbine blades is crucial for the safety and reliability of the gas turbine set. This research investigates different arrangement schemes, including dimple/protrusion arrangements, to enhance the cooling performance. The results show that the arrangement scheme with both passes arranged by dimples has the best comprehensive thermal performance.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Emrehan Guersoy, Hayati Kadir Pazarlioglu, Mehmet Guerdal, Engin Gedik, Kamil Arslan
Summary: The thermo-hydraulic performance of Al2O3/H2O nanofluid with different nanoparticle shapes flowing in a sudden expansion tube with variable sudden expansion inclination angles and elliptical dimpled fins with different diameters were numerically investigated. The results showed that the nanoparticle shapes, sudden expansion inclination angles, and elliptical dimpled fin have significant impact on the thermo-hydraulic performance. This study reveals the novelty and importance of these factors in the research.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Thermodynamics
Rukun Hu, Xinyu Huang, Xinyu Gao, Liu Lu, Xiaohu Yang, Bengt Sund
Summary: This study examines the impact of applying bottom cross-cut on PCM's spatial distribution in a horizontal LHTES unit using numerical simulation. The findings show that bottom cross-cut can improve the heat storage rate and natural convection heat transfer gain.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)