【摘 要】
：
Entropy generation is the loss of energy in thermodynamical systems due to resistive forces,diffusion processes,radiation effects and chemical reactions.The main aim of this research is to address entropy generation due to magnetic field,nonlinear thermal
【机 构】
：
Department of Mathematics,University of Azad Jammu and Kashmir Muzaffarabad,13100 Pakistan;Departmen
论文部分内容阅读
Entropy generation is the loss of energy in thermodynamical systems due to resistive forces,diffusion processes,radiation effects and chemical reactions.The main aim of this research is to address entropy generation due to magnetic field,nonlinear thermal radiation,viscous dissipation,thermal diffusion and nonlinear chemical reaction in the transport of viscoelastic fluid in the vicinity of a stagnation point over a lubricated disk.The conservation laws of mass and momentum along with the first law of thermodynamics and Fick\'s law are used to discuss the flow,heat and mass transfer,while the second law of thermodynamics is used to analyze the entropy and irreversibility.The numbers of independent variables in the modeled set of nonlinear partial differential equations are reduced using similarity variables and the resulting system is numerically approximated using the Keller box method.The effects of thermophoresis,Brownian motion and the magnetic parameter on temperature are presented for lubricated and rough disks.The local Nusselt and Sherwood numbers are documented for both linear and nonlinear thermal radiation and lubricated and rough disks.Graphical representations of the entropy generation number and Bejan number for various parameters are also shown for lubricated and rough disks.The concentration of nanoparticles at the lubricated surface reduces with the magnetic parameter and Brownian motion.The entropy generation declines for thermophoresis diffusion and Brownian motion when lubrication effects are dominant.It is concluded that both entropy generation and the magnitude of the Bejan number increase in the presence of slip.The current results present many applications in the lubrication phenomenon,heating processes,cooling of devices,thermal engineering,energy production,extrusion processes etc.
其他文献
As a crucial part of the Asian monsoon stretching from tropical India to temperate East Asia,the Indian monsoon (IM) contributes predominant precipitation over Asian continent.However,our understanding of IM\'s onset,development and the underlying drivi
Developing efficient platinum (Pt)-based electrocatalysts is enormously significant for fuel cells.Herein,we report an integrated electrocatalyst of ultralow-Pt alloy encapsulated into nitrogen-doped nanocar-bon architecture for efficient oxygen reduction
Halide perovskite single crystals (HPSCs) provide a unique platform to study the optoelectronic proper-ties of such emerging semiconductor materials,while the temperature induced crystal growth method often has an increased solute integration speed and/or
The (3 + 1)-dimensional Zakharov-Kuznetsov (ZK) and the new extended quantum ZK equations are functional to decipher the dense quantum plasma,ion-acoustic waves,electron thermal energy,ion plasma,quantum acoustic waves,and quantum Langmuir waves.The enhan
Entropy generation is one of the key features in analysis as it exhibits irreversibility of the system.Therefore,the present study investigates the entropy generation rate in a mixed convective peristaltic motion of a reactive nanofluid through an asymmet
The dimensionless third-order nonlinear Schr(o)dinger equation (alias the Hirota equation) is investigated via deep leaning neural networks.In this paper,we use the physics-informed neural networks (PINNs) deep learning method to explore the data-driven s
In this paper,two integrating strategies namely exp[φ(x)]and G1/G2-expansion methods together with the attributes of local-M derivatives have been acknowledged on the electrical microtubule(MT) model to retrieve soliton solutions.The said model performs a
In this paper,we derive the Lindblad and Redfield forms of the master equation based on the Born-Markov master equation with and without the secular approximation for open multi-level quantum systems.The coefficients of the equations are re-evaluated acco
The ability of the radial basis function (RBF) approach to extrapolate the masses of nuclei in neutron-rich and superheavy regions is investigated in combination with the Duflo-Zuker(DZ31),Hartree-Fock-Bogoliubov (HFB27),finite-range droplet model (FRDM12
Quantum algorithms have been developed for efficiently solving linear algebra tasks.However,they gen-erally require deep circuits and hence universal fault-tolerant quantum computers.In this work,we pro-pose variational algorithms for linear algebra tasks