Article
Chemistry, Multidisciplinary
Salman Saleem, Degavath Gopal, Nehad Ali Shah, Nosheen Feroz, Naikoti Kishan, Jae Dong Chung, Saleha Safdar
Summary: This paper investigates the behavior of two-dimensional incompressible mixed-convection flow of magneto-hydrodynamic Eyring-Powell nanofluid on a nonlinear stretching surface. The study reveals that entropy generation during irreversible processes leads to energy loss. By using non-dimensional parameters, a set of higher-order non-linear partial differential equations are transformed into a set of dimensionless ordinary differential equations, which are then solved numerically using the finite element method. The computational results demonstrate that the Schmidt number increases with temperature, while the Prandtl number exhibits the opposite trend. Bejan number and entropy generation decrease with the concentration diffusion parameter.
Article
Thermodynamics
Usman, Abuzar Ghaffari, Irfan Mustafa, Taseer Muhammad, Yasir Altaf
Summary: A theoretical entropy generation analysis was conducted for three-dimensional power-law nanofluid flow near the stagnation point, considering MHD and nonlinear thermal radiation effects. The impact of various parameters on total entropy generation and Bejan number profiles was investigated numerically. Skin friction coefficients and local Nusselt number were calculated for shear-thinning and shear-thickening behaviors of the power-law fluid.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Physics, Multidisciplinary
M. R. Acharya, P. Mishra, S. Panda
Summary: This paper analyzes the augmentation entropy generation number for a viscous nanofluid flow over a non-isothermal wedge, considering the effects of non-linear radiation and activation energy. It discusses the influence of thermodynamically important parameters and presents the mathematical formulation for thermal conductivity and viscosity of nanofluid. The results show that adding nanoparticles tends to enhance the augmentation entropy generation number and the effectiveness of this addition depends on the heat transfer irreversibility contribution.
Article
Physics, Multidisciplinary
S. Mandal, G. C. Shit
Summary: The study reveals that in the case of a rotating disk, fluid flow is accelerated in the radial and cross-radial directions as the rotation speed increases. Skin friction and heat transfer rate at the disk are strongly influenced by the rotation of the disk, permeability of the porous medium, thermal radiation, and nanoparticle size.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Thermodynamics
Muhammad Rooman, Muhammad Jameel, Asifa Tassaddiq, Zahir Shah, Ahmed Alshehri, Poom Kumam
Summary: This study evaluates the flow of Cu-Water nanofluid across gradually stratified paraboloids of revolution and investigates the influence of various fluid properties and important factors on the flow. Heat transfer equations consider stratification, thermal emission, viscous and joule dissipation, while mass transfer equation investigates chemical reaction. The mathematical model and graphical results demonstrate the relationship between flow characteristics and several important parameters.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Mathematics, Interdisciplinary Applications
Kushal Sharma, Neha Vijay, O. D. Makinde, S. B. Bhardwaj, Ram Mehar Singh, Fazle Mabood
Summary: This study investigates the Coriolis effect with forced convective heat transfer on steady ferrohydrodynamic flow past a rotating porous disk in the presence of viscous dissipation. The findings show that the heat transfer rate and thermal boundary layer thickness increase due to the higher value of the dissipation parameter.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Thermodynamics
Olatomide G. Fadodun, Adebimpe A. Amosun, Nonso L. Okoli, David O. Olaloye, Johnson A. Ogundeji, Solomon S. Durodola
Summary: This study numerically investigates the entropy production rate in single-walled carbon nanotubes (SWCNTs)/H2O nanofluid flowing through an inwardly corrugated pipe in turbulent flow regime. The results show that an increase in SWCNT-water nanofluid concentration and corrugation amplitude leads to a decrease in thermal entropy production but an increase in viscous entropy production.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Engineering, Chemical
Jian-Feng Zhong, Shahab Naghdi Sedeh, Yu-Pei Lv, Behrad Arzani, Davood Toghraie
Summary: This study investigated the heat transfer, entropy generation, and flow of Fe3O4-water ferro-nanofluid within a porous ribbed microchannel heat sink in the presence of a constant magnetic field. Various dimensionless numbers and porosity percentages were considered to analyze the impacts on heat transfer performance. The results showed a direct relationship between factors such as porosity percentage, Reynolds number, and Hartmann number with the enhancement of the heat transfer coefficient.
Article
Thermodynamics
T. Hayat, W. Shinwari, Sohail A. Khan, A. Alsaedi
Summary: This article examines the radiative flow of Newtonian nanoliquid over a stretchable curved surface, considering various factors such as radiation effect, Joule heating, and entropy rate. By converting the given system to ordinary one and solving it through ND-solve method, the influences of relevant variables on velocity, concentration, temperature, as well as drag force and Nusselt number are studied. The novelty of this work lies in the consideration of second order velocity slip and convective conditions in chemically reactive flow, with a lack of research on first order slip condition and without convective conditions.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Huihui Cheng, S. Mohammad Sajadi, Mehrdad Zahir Jouzdani
Summary: This article examines the irreversibility of natural convection in water/copper nanofluids within a square enclosure. The study analyzes thermal entropy generation, frictional entropy generation, and total entropy generation by varying the Hartmann number, baffle thickness and length, and magnetic field angle. The numerical analysis is conducted using the Lattice Boltzmann method. Results show that increasing the Hartmann number reduces the velocity components and temperature gradient in the enclosure and decreases all types of entropy generation. Increasing the magnetic field angle enhances thermal and frictional entropy generation as well as total entropy generation, with the Bejan number initially decreasing and then increasing.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Thermodynamics
M. M. Bhatti, A. Riaz, L. Zhang, Sadiq M. Sait, R. Ellahi
Summary: This article discusses entropy analysis and mass transfer in the asymmetric peristaltic propulsion of nanofluid under convection and magnetic effects. The mathematical modeling is formulated using the second law of thermodynamics, Williamson fluid model, and appropriate transformations to examine nanofluid behavior in asymmetric conditions. The outcomes provide insights on various parameters affecting entropy, temperature, concentration, and velocity profile, with the use of homotopy perturbation method for solving the differential equations.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
M. E. Nakhchi, M. T. Rahmati
Summary: In this study, numerical simulations were conducted on the thermal characteristics and second-law analysis of turbulent Cu-H2O nanofluid flow in heat exchangers with transverse-cut twisted tapes (TCTTs) fitted by alternate axis. The simulations showed that TCTTs with a transverse-cut ratio of 0.7 generated higher turbulent kinetic energy compared to those with a ratio of 0.9, with an increase in nanofluid volume concentration leading to a reduction in thermal entropy generation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Mathematics, Interdisciplinary Applications
Rabia Malik, Hina Sadaf, Saamia Raheem
Summary: This article examines the flow characteristics of viscous nanofluid above a swirling, stretchy cylinder in a porous media. The results show that the velocity decreases as the magnetic and permeability parameters increase.
COMPUTATIONAL PARTICLE MECHANICS
(2023)
Article
Physics, Applied
Faris Alzahrani, Sohail A. Khan, Mujeeb Ur Rahman, M. Ijaz Khan
Summary: The main aim of this paper is to study the numerical simulation of viscous nanofluid by stretching cylinder using Buongiorno's model. The effects of dissipation, Joule heating, and magnetic impact on the fluid are examined, along with irreversibility analysis. The study also investigates the Brownian movement and thermophoresis diffusion effects. Nonlinear equations are obtained through constitutive relations, and they are transformed into ordinary differential equations by adopting suitable variables. The behavior of flow controlling parameters is analyzed graphically, and physical quantities are discussed through tables. Important findings are presented, such as the impact of the magnetic effect on the velocity decrement and the opposite impact on the entropy rate.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Engineering, Mechanical
Nilankush Acharya, Suprakash Maity, Prabir K. Kundu
Summary: This analysis investigates the entropy generation of hybrid nanofluidic transport over an unsteady spinning disk. The study considers the magnetic influence, velocity slips, and thermal radiative effects in the flow. The results show that increasing the magnetic field value increases the entropy generation, while velocity slip, radiation, and nanoparticle concentration reduce it. The entropy production of the hybrid nanofluid is lower compared to the usual nanofluid. The magnetic parameter reduces the Bejan number, while the slip factor and nanoparticle concentration amplify its effects.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Multidisciplinary
Mumtaz Khan, Dianchen Lu
Summary: This article numerically investigates the time-dependent fractional non-Newtonian fluid model on a vertical plane in a Darcy medium. A generalized Scott-Bliar model is employed to control the flow and mass transfer in the boundary layer region. The analysis shows that the fractional exponent significantly affects the concentration of chemical species and provides insights into the chemical process in the fractional Casson fluid model.
AIN SHAMS ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Umair Rashid, Hasan Shahzad, Dianchen Lu, Xinhua Wang, Afraz Hussain Majeed
Summary: The mathematical analysis of fluid flow in a wavy cavity with a heated circular center is investigated in this study. The focus is on the mass and heat transfer in MHD Casson fluid flow. The results show that the rate of heat transfer increases while the rate of mass transfer decreases with the increasing Casson parameter.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Raheela Razzaq, Umer Farooq, Mohammed Aldandani
Summary: The objective of this article is to present a novel model for the natural convection in MHD boundary-layer flow of CNT-based nanofluid above a vertical cone in a porous medium. The model considers the effects of thermal radiations, chemical reactions, and different types of CNTs. Non-similarity transformations are used to obtain dimensionless PDEs, and a numerical solution is obtained using the bvp4c algorithm. The results show that the Sherwood number increases with the Biot number, and the velocity and temperature profiles decrease with the Prandtl number. The influence of SWCNTs is found to be higher than MWCNTs for velocity, temperature, and concentration profiles.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Saman Riaz, Nitasha Naheed, Umer Farooq, Dianchen Lu, Muzamil Hussain
Summary: The main objective of this study is to investigate the effects of various parameters on the magnetohydrodynamic convection flow of a nanofluid across a stretched sheet. The study includes the influence of viscous dissipation, Joule heating, and slip condition, as well as convective boundary condition, mass flux and heat source. The results show that the values of volume fraction and slip parameter increase the skin friction coefficient, while the values of Hartman number and porosity parameter decrease it. Furthermore, the values of volume fraction, slip parameter, and Eckert number decrease the local Nusselt number, while the values of Hartman number, porosity parameter, and heat source parameter increase it.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Mathematics, Applied
Muhammad Idrees Afridi, Zhi-Min Chen, Nadia Riaz, Muhammad Qasim
Summary: This research investigates the magnetohydrodynamics (MHD) boundary layer flow over a moving needle and uses numerical calculations to predict the flow properties. It is important for the design of submarines, missiles, aircraft, rockets, and jet engines.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Chemistry, Analytical
Farida Aslam, Saima Noreen, Muhammad Idrees Afridi, Muhammad Qasim
Summary: In this study, the effects of electrokinetic phenomena on entropy are investigated. The microchannel is modeled with an asymmetrical and slanted configuration, taking into account fluid friction, mixed convection, Joule heating, presence and absence of homogeneity, and a magnetic field. The governing flow equations are linearized using the Debye-Huckel and lubrication assumptions, and the resulting nonlinear couple differential equations are solved using Mathematica. Homogeneous and heterogeneous reaction parameters have different effects on concentration distribution, and the Eyring-Powell fluid parameters show opposite relations with various variables. The overall increase in fluid temperature and entropy is influenced by the mass Grashof number, Joule heating parameter, and viscous dissipation parameter.
Article
Thermodynamics
Umair Rashid, Dianchen Lu, Quaid Iqbal
Summary: The study investigates the influence of nanoparticle shape on the flow and heat conduction of nanofluid in a cavity. The flow behavior and heat transfer of spherical, columnar, and lamina-shaped nanoparticles in the cavity are simulated using the finite element method. The results show that the lamina-shaped nanoparticles perform better in temperature distribution and heat transfer of the nanofluid.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Muzamil Hussain, Umer Farooq, Mikhail Sheremet
Summary: This study develops nonsimilar analysis for the electrically conducting nanofluid flow over a vertically placed stretching surface adjacent to porous medium with transverse magnetic field assumption. The features of thermal radiations, viscous dissipation, and heat source factors are also incorporated. The results show that the increase in Richardson number enhances the nanofluid velocity while it diminishes the temperature profile.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Mathematics, Applied
Muhammad Idrees Afridi, Zhi-Min Chen, Nadia Riaz, Muhammad Qasim
Summary: This article investigates flow over a linearly stretching sheet with constant temperature. The effects of frictional heating and Ohmic heating are studied. It is found that energy equations are not self-similar when considering viscous dissipation, depending on the stretching velocity and surface temperature. A constraint between sheet velocity and surface temperature is needed for similarity transformations. In this analysis, a pseudo-similarity transformation is employed and the viscous dissipation parameter is used as a non-similarity variable.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Mathematics
Jamshaid Ul Rahman, Sana Danish, Dianchen Lu
Summary: In this paper, a novel deep neural network-based method is proposed to simulate the Sel'kov glycolysis model, which overcomes the limitations of conventional numerical methods and offers greater reliability for nonlinear dynamics. The results demonstrate that the proposed approach outperforms traditional methods, providing researchers with deeper insights into the complex interactions that drive biochemical systems.
Article
Thermodynamics
Umair Rashid, Naeem Ullah, Dianchen Lu, Hamiden Abd El-Wahed Khalifa
Summary: The study investigates the heat transfer characteristics and energy transfer of power law fluid flow in a crown cavity with an adjustable heated cylinder. The results indicate that the kinetic energy and Nusselt number are higher for shear thinning, while they are lower for shear thickening.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Muzamil Hussain, Umer Farooq, Mikhail Sheremet
Summary: This research investigates the effects of nonuniform porosity on the radiative flow of nanofluid, taking into account the viscous dissipation and inclined magnetic field. The governing equations are solved using a MATLAB algorithm, and the results are validated through a comparative study.
NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS
(2023)
Article
Thermodynamics
Muhammad Idrees Afridi, Muhammad Qasim, Ali J. Chamkha
Summary: This study investigates the entropy generation in steady three-dimensional thermal flow under the combined influence of viscous dissipation and mixed convection. The governing equations are reduced to a dimensionless nonlinear set of ordinary differential equations using classical similarity variables. The simplified finite difference method is employed to solve the resulting equations, and good agreement is observed with previous results. The effects of physical parameters on various flow and heat transfer variables, as well as entropy generation rate, are examined. A decreasing trend in entropy generation rate is found near the stretching surface with respect to the mixed convection parameter, and entropy reduction can be achieved by using a fluid with low Prandtl number and minimizing fluid friction.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Mathematics, Applied
Umer Farooq, Ahmed Jan, Muzamil Hussain
Summary: This investigation provides a novel study on the flow behavior of magnetohydrodynamics (MHD) nanofluid over an inclined stretching surface in a permeable medium. The research reveals the impacts of various physical characteristics on the velocity and temperature profiles of the nanofluid, and provides useful information for the application of nanomaterials in manufacturing and thermal engineering.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
