Article
Engineering, Multidisciplinary
Lixuesong Han, Chenji Lu, Alexei Yumashev, Dariush Bahrami, Rasool Kalbasi, Mehdi Jahangiri, Arash Karimipour, Shahab S. Band, Kwok-Wing Chau, Amir Mosavi
Summary: The study examines the effects of adding trapezoidal ribs to microchannels on heat transfer with functionalized multi-walled nano-tubes/water nanofluid. Simulation results show that while the addition of trapezoidal ribs increases heat transfer area, it also intensifies the possibility of vortex formation. Vortex formation decreases heat transfer potential, especially with higher Reynolds numbers, but can be mitigated with higher Hartmann numbers and dimensionless slip coefficients.
ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
(2021)
Article
Engineering, Multidisciplinary
Bushra Khatoon Siddiqui, Samina Batool, Qazi Mahmood ul Hassan, M. Y. Malik
Summary: This research investigates the behavior of 3D flow of nanofluid consisting of copper and aluminium oxide nanoparticles and emphasizes the significance of solid particles in enhancing the thermal conductivity of nanofluid. The study confirms a higher uptake of Cu-water and Al2O3-water nanofluids compared to soluble nanomaterials. The research examines incompressible viscous nanofluid flow and explores the influence of homogeneous and heterogeneous reactions, as well as entropy generation. The findings suggest that the curvature parameter and nanoparticle volume fraction have a positive correlation with velocity profile but a negative correlation with temperature profile.
AIN SHAMS ENGINEERING JOURNAL
(2022)
Article
Plant Sciences
Deng Wang, Shu Wang, Li-Xia Li, Ye-She Wang, Ke-Nian Ling-Hu, Jia-Xing Chen
Summary: This study found that temporally heterogeneous environments increase the plasticity of plants. Constant moderate shading can improve photosynthetic and biomass performance of plants, but decrease their late growth in biomass. Karst endemic species show greater improvement in late growth and lower decrease in biochemical performance due to early experience with temporally heterogeneous environments, possibly because of long-term adaptation to karst habitats.
Article
Physics, Applied
Maimona Rafiq, Mahrukh Shazadi, Gul-i-Hina Aslam, Nidhal Ben Khedher, Sayed Mohamed Tag-ElDin, Kamel Guedri
Summary: Entropy generation analyses of hybrid nanofluids via compliant wall tubes with peristalsis effects were conducted in this study. Mathematical models incorporating thermophysical properties of nanofluids and various shapes of nanoparticles were developed. Convective conditions on the boundary were considered. The momentum and energy equations were simplified using the lubrication approach and solved numerically using MATHEMATICA. Graphs were used to observe the impact of various parameters on flow quantities. The study revealed higher entropy generation for blade-shaped nanoparticles.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Physics, Applied
Naveed Imran, Maryiam Javed, Muhammad Sohail, Mubashir Qayyum, Raja Mehmood Khan
Summary: A mathematical model is developed to investigate the entropy generation of peristaltic transport in a two-dimensional channel with elastic walls using the Ellis fluid. The effects of viscous dissipation on heat and mass transfer are examined. Non-dimensional analysis is used to simplify the governing equations, and numerical solutions are obtained using NDSolve Mathematica technique. The outcomes of the model provide valuable insights into flow characteristics, thermal characteristics, and species characteristics. The findings have potential applications in biomedical engineering, particularly in the development of contamination-free peristaltic pumps for transporting biological fluids.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Engineering, Mechanical
Xuefeng Li, Mohamed Ichchou, Abdelmalek Zine, Christophe Droz, Noureddine Bouhaddi
Summary: This paper presents an inverse Algebraic Wavenumber Identification (AWI) technique for extracting complex wavenumbers from vibration measurements in 1D-periodic structures under stochastic conditions. The proposed technique is sensitive to noisy measurements, nonuniform sampling points, or geometrical uncertainties. It offers a robust and accurate method for wavenumber extraction in various scenarios.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Thermodynamics
Z. Abbas, M. Y. Rafiq, A. S. Alshomrani, M. Z. Ullah
Summary: Entropy generation is a key attribute in heat transfer processes, and the analysis of MHD peristaltic flow in a diverging tube for an incompressible liquid shows that velocity decreases in the tube center but increases near the tube walls for higher magnetic parameter values.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Maimona Rafiq, Mehmoona Sajid, Sharifa E. Alhazmi, M. Ijaz Khan, Essam Rashdy El-Zahar
Summary: This study investigates the peristaltic flow of Jeffrey nanofluid through a tapered asymmetric channel and examines the role of Jeffrey fluid in applications. The results show that the velocity exhibits a parabolic behavior near the center, and the tapering parameter has a significant influence on the velocity. Additionally, the study analyzes the effects of temperature and concentration, revealing a decrease in both variables as energy is utilized for digestion. The findings provide insights into electroosmotic phenomena in physiological systems and have promising applications in drug delivery and food diagnostics.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Physics, Multidisciplinary
Susmay Nandi, Bidyasagar Kumbhakar
Summary: Theoretical analysis is conducted on entropy generation in MHD nanofluid flow past an inclined stretched surface with multiple slips, binary chemical reaction, nonlinear thermal radiation and Arrhenius activation energy. The study reformulates governing equations and uses numerical techniques to analyze the behaviors of different parameters. The numerical results are validated and show excellent conformity with the results presented in the paper.
Article
Thermodynamics
Souvik Pabi, Sumit Kumar Mehta, Sukumar Pati
Summary: This study investigates the thermo-fluidic and entropy generation characteristics for electroosmotic flow through a hydrophobic microchannel with consideration of the viscoelectric effect. Results show that the viscoelectric effect decreases flow velocity, and the decrease in flow rate percentage is larger in the slip case.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
T. Sujith, Sumit Kumar Mehta, Sukumar Pati
Summary: In this work, a theoretical model considering the finite size of ions and interfacial slip is developed to study the entropy generation in electroosmotic flow through a rectangular microchannel. The model uses the Navier-slip model and the modified Poisson-Boltzmann equation, and is numerically solved using a finite element method-based solver. The results show that the effect of the finite size of ions on entropy generation depends strongly on the viscous and Joule heating. The average total entropy generation decreases with the slip coefficient and increases with the steric factor for lower thermal Peclet number (Pe), while the opposite effect is observed at higher Pe values.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Haowen Li, Huachao Yang, Jianhua Yan, Kefa Cen, Kostya (Ken) Ostrikov, Zheng Bo
Summary: This work introduces entropy generation analysis to supercapacitors for the first time, accurately quantifying the irreversibilities and inefficiency mechanisms in the system. The effects of electrolyte, porosity, and charge/discharge current on thermodynamic irreversibilities and heat transfer characteristics are investigated, and an optimal design scheme is obtained through optimization approaches. This study provides a fundamental and computational framework for the development and optimization of clean and renewable energy conversion and storage systems with reduced irreversibilities.
Article
Chemistry, Analytical
Jinxin Zhang, Meng Wu
Summary: This paper introduces a new design approach for constructing a high-quality entropy pool based on chaotic circuits and environmental awareness, addressing the random number requirements in multi-sensor network security. By analyzing potential random source events, this scheme utilizes sensor device awareness technology to extract genuinely random events from nature, forming a high-quality heterogeneous fusion entropy pool. The results show that this proposed scheme outperforms traditional methods, meeting the random entropy source demands of multi-sensor networks.
Article
Thermodynamics
S. Mohamadi, M. H. Yazdi, E. Solomin, A. Fudholi, K. Sopian, P. L. Chong
Summary: In the study of heat transfer enhancement using nanofluids, it is important to balance the trade-off of higher irreversibility and pressure drop. Considering thermal performance should involve factors like pressure drop and entropy generation in addition to heat transfer characteristics.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2021)
Article
Water Resources
Xiangjuan Yang, Qian Shao, Hussein Hoteit, Jesus Carrera, Anis Younes, Marwan Fahs
Summary: This study investigates three-dimensional natural convection processes in heterogeneous porous media using a meshless Fourier series approach. By considering a large-scale Rayleigh number to account for heterogeneity, it is found that the method is highly accurate for 3D natural convection problems.
ADVANCES IN WATER RESOURCES
(2021)
Article
Mathematics, Applied
Liaquat Ali Lund, Abderrahim Wakif, Zurni Omar, Ilyas Khan, Isaac Lare Animasaun
Summary: This report investigates the influence of thermal radiation and viscous dissipation on the motion of hybrid nanofluid over a moving surface. The study finds that thermal radiation parameter enhances heat transfer rate and increases temperature, and two solution branches are observed, with the upper branch being stable.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Physics, Applied
Hanumesh Vaidya, Rajashekhar Choudhari, Dumitru Baleanu, K. Prasad, Shivaleela, M. Ijaz Khan, Kamel Guedri, Mohammed Jameel, Ahmed M. Galal
Summary: This study investigates phenomena such as electro-osmosis, peristalsis, and heat transfer and proposes the possibility of constructing biomimetic thermal pumping systems. A mathematical model is developed to examine the mechanisms of magnetohydrodynamics non-Newtonian flow. The findings suggest that electro-osmosis may improve peristaltic flow.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Physics, Applied
Rajashekhar Choudhari, Dumitru Baleanu, Hanumesh Vaidya, K. V. Prasad, M. Ijaz Khan, Omar T. Bafakeeh, Mowffaq Oreijah, Kamel Guedri, Ahmed M. Galal
Summary: The paper focuses on modeling the MHD peristaltic flow of Phan-Thien-Tanner nanofluid in an asymmetric channel with multiple slip effects. By using approximations based on long wavelength and low Reynolds number, the governing partial differential equations are transformed into nonlinear and coupled differential equations. Exact solutions for temperature and nanoparticle concentration distribution are obtained, while a perturbation technique is used to solve the nonlinear velocity distribution. Graphical analysis demonstrates the effects of essential parameters on various flow phenomena, which are crucial for understanding blood rheology.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Thermodynamics
Kerehalli Vinayaka Prasad, Rajashekhar Choudhari, Hanumesh Vaidya, Ashwini Bhat, Isaac Lare Animasaun
Summary: In recent years, there has been a growing interest in modern micro- and nanotechnologies for micro/nano-electronic devices. One of the new trends is the simultaneous use of nanofluids and biological micro-organisms. This study develops a mathematical model to examine the flow of mixed convective couple-stress nanofluids in a vertical channel, and investigates the effects of various non-Newtonian flow parameters on the results.
Article
Thermodynamics
Hanumesh Vaidya, Isaac Lare Animasaun, Kerehalli Vinayaka Prasad, Choudhari Rajashekhar, Javalkar U. Viharika, Qasem M. Al-Mdallal
Summary: The dynamics of blood carrying microscopic copper particles through overlapping stenotic arteries is an important research area, especially for understanding the flow dynamics in blood vessels. The study used the Casson model to analyze the peristaltic blood flow of copper nanoparticles in overlapping stenotic arteries. Higher temperature and velocity were observed in the stenosed arteries, with a decrease as it approaches the artery wall. The increase in the heat source parameter led to a higher temperature distribution.
JOURNAL OF NON-EQUILIBRIUM THERMODYNAMICS
(2023)
Article
Physics, Applied
F. Mebarek-Oudina, Preeti, A. S. Sabu, H. Vaidya, R. W. Lewis, S. Areekara, A. Mathew, A. I. Ismail
Summary: This study numerically evaluates the hydromagnetic flow of a magnetite-water nanofluid induced by a rotating stretchable disk. The Buongiorno model is used to model the nanofluid flow, considering the volume fraction-dependent effective properties and slip mechanisms. Experimentally obtained functions of effective viscosity and thermal conductivity are also employed. The transformed first-order ODEs are solved using the Runge-Kutta algorithm and the shooting technique. The impact of relevant terms on the nanoliquid temperature and concentration is explained using graphs. The findings have important applications in various fields such as spin coating, rotating disk reactors, storage devices, food processing, and heat exchangers.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Chemistry, Multidisciplinary
C. Rajashekhar, H. Vaidya, G. Manjunatha, Yakubu Aminu Dodo, K. V. Prasad, Hela Gnaba, Rohayah H. J. Che Amat, M. Ijaz Khan
Summary: This study investigates the modeling of Ree-Eyring fluid flow with variable viscosity and thermal conductivity inside a peristaltic non-uniform complaint channel. The governing nonlinear differential equations are solved using the small Reynolds number and long-wavelength approximations. The temperature expression is obtained using the series solution method and graphs are drawn to analyze the effects of relevant parameters on velocity, temperature, concentration, and streamlines through MATLAB 2020b. The results show higher velocity in the Newtonian fluid compared to the non-Newtonian fluid, and it is found that the size of the bolus can be varied by changing the viscosity parameter, providing insights into thrombus formation in blood vessels.
JOURNAL OF THE INDIAN CHEMICAL SOCIETY
(2023)
Article
Engineering, Multidisciplinary
Fuzhang Wang, Qasem M. Al-Mdallal, O. A. Famakinwa, I. L. Animasaun, Hanumesh Vaidya
Summary: This study focuses on the dynamics of colloidal mixes of water and copper-based nanoparticles exposed to an inclined magnetic field. The effects of various factors such as Joule dissipation, temperature gradient-induced mass flux, internal heating, and concentration gradient-induced heat flux on the dynamics are investigated. Numerical simulations and solving of the resultant nonlinear coupled ordinary differential equation are performed using MATLAB software.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Mathematics
Pervinder Singh, Vinod K. Gupta, Isaac Lare Animasaun, Taseer Muhammad, Qasem M. Al-Mdallal
Summary: Weakly non-linear stability analysis is a practical method for examining the stability and dynamical behavior of non-linear systems. Time-varying gravitational acceleration and triple-diffusive convection are significant in the formation of acceleration, and more research is needed on the significance of a modulated gravitational field on heat and mass transfer.
Article
Materials Science, Biomaterials
Hanumesh Vaidya, Kerehalli Vinayaka Prasad, Dharmendra Tripathi, Rajashekhar Choudhari, Hijaz Ahmad
Summary: This study examines the flow of viscoplastic hybrid nanofluids driven by pumping through a vertical cylindrical tube due to a stenosed artery. The effects of Hall and ion-slip currents and magnetic field on flow characteristics, thermal characteristics, and concentration profiles are analyzed. Mathematical equations based on fluid dynamics principles are employed and a perturbation method is used to determine temperature, concentration, and velocity profiles. The results of this study have potential applications in healthcare, particularly in the circulatory system and drug delivery through stenosed arteries.
Article
Chemistry, Multidisciplinary
Rajashekhar Choudhari, Hanumesh Vaidya, Kerehalli Vinayaka Prasad, Rathod Kirankumar Gulab, Kamel Guedri, Aysha Rehman, Ahmed M. Galal
Summary: This study investigates the electroosmotic force effect on the peristaltic motion of the third-grade fluid in a uniform channel. The governing equations for long wavelengths and low Reynolds numbers are derived, and solutions for various parameters are obtained by considering the variable liquid properties. The results show that the velocity and temperature fields are affected by the variable fluid properties, with increasing Helmholtz-Smoluchowski velocity values resulting in a decrease in the velocity field and temperature decreasing as the Deborah number increases. The study also finds that the velocity slip characteristics increase and the size of the trapping bolus shrinks.
JOURNAL OF COMPUTATIONAL BIOPHYSICS AND CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
S. Saranya, Qasem M. Al-Mdallal, I. L. Animasaun
Summary: This paper focuses on the dynamics of time-dependent fluids with plastic dynamic viscosity and limiting viscosities at zero. It also examines the transport phenomenon involving migration of tiny particles and gyrotactic microorganisms. The Shifted Legendre Collocation method is used to solve the coupled, nonlinear, and dimensionless form of the transport equation. The study reveals various characteristics of Casson fluid and Carreau fluid in different scenarios.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
