Article
Thermodynamics
Suriya Uma Devi Sathyanarayanan, Fazle Mabood, Wasim Jamshed, S. R. Mishra, Kottakkaran Nisar, P. K. Pattnaik, M. Prakash, Abdel-Haleem Abdel-Aty, Mohammed Zakarya
Summary: The study is based on the flow of hybrid nanofluid within a micro channel, considering the variations in viscosity and thermal conductivity. Through numerical simulations and experimental data, the physical behaviors of flow phenomena and entropy/Bejan number are presented.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Mechanical
Battena Triveni, Munagala Venkata Subba Rao
Summary: The main objective of this article is to analyze the heat transfer characteristics of unsteady magnetohydrodynamic hybrid nanofluid flow over a stretching/shrinking sheet. The study synthesizes a hybrid nanofluid by incorporating TiO2 and Cu nanoparticles into water. Nonlinear equations are obtained using a similarity transformation approach and solved using the Runge-Kutta-Fehlberg method combined with the shooting method. The results indicate the existence of dual solutions in a specific parameter range and demonstrate improved heat transfer performance with the use of hybrid nanofluids.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Thermodynamics
Asmat Ullah Yahya, Nadeem Salamat, Wen-Hua Huang, Imran Siddique, Sohaib Abdal, Sajjad Hussain
Summary: The study examines thermal transport of hybrid nanofluids for managing increasing heat density in miniature and technical processes. By employing numerical solutions and computational software, it is found that the velocity is affected by the growing parameters of magnetic field and porosity, resulting in higher temperature.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Mathematics, Applied
Emil M. Constantinescu
Summary: We propose a new method that extends conservative explicit multirate methods to implicit explicit-multirate methods. We develop extensions of order one and two with different stability properties on the implicit side. The method is suitable for time-stepping adaptive mesh refinement PDE discretizations with different degrees of stiffness. A numerical example with an advection-diffusion problem illustrates the new method's properties.
APPLIED MATHEMATICS LETTERS
(2022)
Article
Thermodynamics
Farooq Ahmad, Sohaib Abdal, Hela Ayed, Sajjad Hussain, Suleman Salim, A. Othman Almatroud
Summary: The research theoretically analyzed the heat transfer enhancement of hybrid nanofluids flowing through a porous medium in the presence of a magnetic field. The results showed that the flow speed increases with the Maxwell fluid parameter, while the increasing strength of the magnetic field and porosity resistance slows down the flow but causes a rise in temperature. Additionally, the additive volume fraction of silver with Graphene oxide helps decelerate the flow and enhance heat transportation.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Mohamed Kezzar, Nabil Talbi, Mohamed Rafik Sari, Abdelaziz Nehal, Mohsen Sharifpur, Ravinder Kumar, Nima Gharib, Wafa Salsoul, Haddad Fatiha
Summary: The objective of this research is to investigate the impacts of velocity-slip boundary conditions and shape factor of solid nanoparticles on the hydrodynamic behavior of nonlinear MHD hybrid nanofluid flow. The effects of factors like Reynolds number, channel half-angle, Hartman number, base fluids nature, hybrid nanoparticles, velocity-slip boundary conditions, shape, and geometry of solid nanoparticles on the velocity and skin friction coefficient of the hybrid nanofluid are studied.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Thermodynamics
Himanshu Upreti, Alok Kumar Pandey, Tanya Gupta, Subrahamanyam Upadhyay
Summary: This study examines the flow characteristics of Au-TiO2/ethylene glycol hybrid nanofluid flowing over a thin needle and considers the effects of magnetic field, quadratic convection, and quadratic thermal radiation. The results show that cylindrical-shaped nanoparticles have the highest temperature profiles, while blade-shaped particles have the lowest.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Multidisciplinary Sciences
Abdul Rahman Mohd Kasim, Nur Syamilah Arifin, Syazwani Mohd Zokri, Noor Amalina Nisa Ariffin, Sharidan Shafie
Summary: This paper describes a two-phase flow model involving non-Newtonian fluid, which is more reliable for industrial applications due to its special characteristics. Among the various models of non-Newtonian fluid, the Williamson model has received the most attention. This paper aims to explore the flow of a two-phase Williamson fluid model under the presence of MHD and thermal radiation conditions. The obtained ordinary differential equations are solved using the Runge-Kutta Fehlberg (RKF45) method. The results show variations in dust phases compared to the fluid phase, affecting the distribution of velocity and temperature.
Article
Thermodynamics
Irfan Saif Ud Din, Imran Siddique, Rifaqat Ali, Fahd Jarad, Sohaib Abdal, Sajjad Hussain
Summary: This study examined the impact of nonlinear heat radiation on the heat transmission evaluation of Carreau nanofluid and tangent hyperbolic nanofluid passing across a wedge with gyrotactic microorganisms, revealing differences in flow velocity and temperature behavior due to various factors such as viscous effects and thermophoresis. The skin friction factor for tangent hyperbolic nanofluid was found to be approximately half of that for Carreau nanofluid.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Physics, Applied
S. R. Mishra, Ram Prakash Sharma, Laxmipriya Swain
Summary: The behavior of dissipative heat on the time-dependent stagnation motion of nanofluids through a permeable surface is analyzed using a proposed model with various physical properties. A novel approach to thermal buoyancy through the permeable medium enriches the flow properties. The proposed model is transformed into a non-dimensional form for a set of similarity variables and solved using a numerical technique. The results show that the fluid velocity is influenced by particle concentration and magnetic parameter, and the fluid temperature is enhanced by particle concentration and dissipative heat.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Mathematics
Theodoros Monovasilis, Zacharoula Kalogiratou
Summary: In this work, explicit Two-derivative Runge-Kutta methods where the function f is evaluated only once at each step are considered. New 7th order methods with minimized dispersion and dissipation error are presented, and their performance on four well-known oscillatory problems is compared to existing methods. Numerical experiments demonstrate the efficiency of the derived methods.
Article
Thermodynamics
A. K. Abdul Hakeem, S. Priya, Ganga Bhose, Sivasankaran Sivanandam
Summary: This study highlights the importance of considering porous media and viscous dissipation in the use of hybrid nanofluids for heat transfer. The results show that slip conditions significantly affect the momentum and temperature distribution in natural convective boundary layer flow. These findings are valuable for improving the energy efficiency of thermal systems.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Thermodynamics
G. K. Ramesh, J. K. Madhukesh, Emad H. Aly, Ioan Pop
Summary: This paper studies the steady biomagnetic hybrid nanofluid (HNF) of oxytactic microorganisms over a thin needle with a magnetic field using the modified Buongiorno's nanoliquid model. The governing equations were transformed into ordinary differential equations and solved numerically. The velocity profiles, temperature distribution, reduced shin friction coefficient, reduced Nusselt number, and microorganisms' flux were analyzed for different parameter values.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Thermodynamics
Sohaib Khan, Farhad Ali, Sayer O. Alharbi, Anees Imtiaz, Waqar A. Khan, Ilyas Khan
Summary: This article investigates entropy generation analysis for viscous fluid over a thin needle by modeling and numerically solving the governing equations. The study shows the effects of embedded flow parameters on various variables, and reveals patterns such as the decrease in entropy generation rate with increasing needle size.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Asmat Ullah Yahya, Sayed M. Eldin, Suleman H. Alfalqui, Rifaqat Ali, Nadeem Salamat, Imran Siddique, Sohaib Abdal
Summary: The demand for efficient heat transportation is increasing and the hybrid nanofluid emulsion is a new concept in this research field.
Article
Mathematics, Applied
Muhammad Usman Ashraf, Muhammad Qasim, Abderrahim Wakif, Muhammad Idrees Afridi, Isaac L. Animasaun
Summary: This article numerically examines the peristaltic flow of blood-based nanofluid using the generalized differential quadrature method. It adopts the Casson constitutive model to depict flow characteristics in a uniform wavy tube, and considers the non-Newtonian nature and heat transfer feature of the nanofluidic medium. The study successfully models the flow under realistic assumptions, and explores the effects of adding magnetite nanoparticles in the biofluidic medium.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2022)
Article
Engineering, Chemical
L. Ranganatha Swamy, N. R. Banapurmath, T. K. Chandrashekar, Manzoore Elahi M. Soudagar, M. Gul, Nik-Nazri Nik-Ghazali, M. A. Mujtaba, Kiran Shahapurkar, Umit Agbulut, Hashim M. Alshehri, A. M. Sajjan, Marjan Goodarzi
Summary: The use of oxygenated fuels as a substitute for diesel fuel in engines can effectively reduce emissions, but it also leads to increased NOx emissions, inferior HC and CO emissions, and shortened ignition delay and combustion duration.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Energy & Fuels
Marjan Goodarzi, Mohamed Abdelghany Elkotb, Abdullah K. Alanazi, Hala M. Abo-Dief, Ibrahim B. Mansir, Vineet Tirth, Fehmi Gamaoun
Summary: By utilizing Bayesian inference, this study provided accurate models for predicting the melting characteristics in PCM spherical heat storage units. Evaluation of the models' statistical performance showed that model #4 performed the best in predicting the melting rate, while model #5 excelled in predicting the surface-averaged Nusselt number.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Raad Z. Homod, Hussein Togun, Ahmed Kadhim Hussein, Fadhel Noraldeen Al-Mousawi, Zaher Mundher Yaseen, Wael Al-Kouz, Haider J. Abd, Omer A. Alawi, Marjan Goodarzi, Omar A. Hussein
Summary: This study explores the use of reinforcement learning to optimize the energy efficiency and thermal comfort of HVAC systems. The authors propose a hybrid deep clustering multi-agent reinforcement learning approach that can better handle the challenges of large-scale nonlinearity and action space expansion, achieving significant performance improvements in energy savings and thermal comfort compared to PID control.
Article
Physics, Multidisciplinary
Muhammad Idrees Afridi, M. U. Ashraf, Muhammad Qasim, A. Wakif
Summary: The numerical investigation of entropy generation and its depreciation in oscillating fluid flow with internal fluid heating and transpiration is presented. The results show that the control parameters have a significant impact on the physical quantities of interest in the model.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Physics, Multidisciplinary
Muhammad Idrees Afridi, Abderrahim Wakif, Abdullah K. Alanazi, Zhi-Min Chen, Muhammad Usman Ashraf, Muhammad Qasim
Summary: This study numerically examines the transfer of heat and entropy over a thin needle surface in an incompressible fluid. It explores the effects of frictional heating by including the dissipation function in the energy equation. The thermophysical characteristics of the fluid are assumed to be dependent on temperature, and the numerical solutions are computed using the differential quadrature method (DQM) and verified using the routine bvp4c.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
Article
Green & Sustainable Science & Technology
Wasim Jamshed, Abdullah K. Alanazi, Siti Suzilliana Putri Mohamed Isa, Ramashis Banerjee, Mohamed R. Eid, Kottakkaran Sooppy Nisar, Hashem Alshahrei, Marjan Goodarzi
Summary: This article investigates the working function and performance of parabolic trough solar collector (PTSC) in solar aircraft wings. By analyzing the heat transfer in a tangent hyperbolic hybrid nanofluid (THHNF), which contains Copper (Cu) and Silica (SiO2) nanoparticles in viscous fluid, it is found that the hybrid nanofluid exhibits better performance in heat transmission compared to conventional nanofluid.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Raad Z. Homod, Hussein Togun, Adnan A. Ateeq, Fadhel Noraldeen Al-Mousawi, Zaher Mundher Yaseen, Wael Al-Kouz, Ahmed Kadhim Hussein, Omer A. Alawi, Marjan Goodarzi, Goodarz Ahmadi
Summary: This study proposes a hybrid layer structure model to overcome the challenges in modeling the performance of cooling coils. The model combines two optimization methods and shows good control performance in saving energy and cost for HVAC systems. It is suitable for estimating energy and cost savings, and can evaluate the response of different output flows when changing independent variables.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Multidisciplinary Sciences
Muhammad Samad Khan, Mubashir Ali Siddiqui, Muhammad Idrees Afridi
Summary: This study investigates the influence of nonlinear convection, viscous dissipation, and Joule heating on the temperature and velocity profiles of incompressible fluid over a flat plate. The governing equations are modeled as non-linear PDEs, which are solved numerically using the finite difference method.
Article
Green & Sustainable Science & Technology
Mashhour A. Alazwari, Masood Ashraf Ali, Mohammed Algarni, Eman Alzahrani, Mouna Jeridi, Marjan Goodarzi
Summary: In this study, the problem of 2-D heat transfer on a long cylindrical vessel made of functionally graded material (FGM) was investigated using an analytical method. The obtained analytical solution shows the flexibility of temperature distribution by using functionally graded material.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Mathematics
Muhammad Idrees Afridi, Zhi-Min Chen, Theodoros E. Karakasidis, Muhammad Qasim
Summary: The present study investigates the effects of uniform lateral mass flux on boundary layer flow induced by a non-linearly stretching surface. The study proposes a local-similarity approximation method to solve the non-similar flow problem. Numerical results indicate that certain approximation methods lead to errors in predicting boundary layer flow.
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
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
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)
