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通过加热板对普朗特液体的流动、传热和溶质输运的改进有限元方法。

Improved finite element method for flow, heat and solute transport of Prandtl liquid via heated plate.

作者信息

Hafeez Muhammad Bilal, Krawczuk Marek, Jamshed Wasim, Kaneez Hajra, Hussain Syed M, El Din El Sayed M Tag

机构信息

Institute of Mechanics and Machine Design, Faculty of Mechanical Engineering and Ship Technology, Gdansk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.

Department of Mathematics, Capital University of Science and Technology (CUST), Islamabad, 44000, Pakistan.

出版信息

Sci Rep. 2022 Nov 16;12(1):19681. doi: 10.1038/s41598-022-20332-2.

Abstract

In the current study, a vertical, 3D-heated plate is used to replicate the generation of heat energy and concentration into Prandtl liquid. We discuss how Dufour and Soret theories relate to the equations for concentration and energy. In order to see how effectively particles, interact with heat and a solvent, hybrid nanoparticles are used. It does away with the phenomena of viscous dissipation and changing magnetic fields. The motivation behind the developed study is to optimize solvent and heat storage uses in the biological and industrial domains. This article's major goal is to explore the aspects of thermal energy and mass transfer that influence how nanoparticles, hybrid nanoparticles, and 3D melting surface sheets behave. Variable thermal efficiency and variable mass transfer are combined. The system of generated PDEs (difference equations) includes the concentration, velocity, and heat energy equations. The numerical calculations are done for Silver (Ag), Molybdenum Disulfide (MoS) nanoparticles with Ethylene glycol (CHO) as the base fluid using a boundary layer approach to the mathematical formulation. The system of ODEs is formulated through transformations in order to find a solution. A Galerkin finite element algorithm (G-FEA) is adopted to analyze various aspects versus different parameters. It has been found that motion into hybrid nanoparticles is reduced by motion into nanoparticles. Additionally, differences in heat energy and solvent particle sizes are associated with modifications in magnetic, Dufour, Eckert, and Soret numbers. In contrast to hybrid nanostructures, the output of thermal energy is usually observed to be substantially higher. The magnetic field parameter decreases the particle velocity. In contradiction to the Eckert number, bouncy parameter, and magnetic parameter set values, the maximum quantity of heat energy is obtained. variable thermal conductivity's function. The 3D heated vertical surface convective heat transfer of nanofluids and hybrid nanofluids under the impact of a heat source, thermal radiation, and viscous dissipation has not yet been studied, as far as the authors are aware.

摘要

在当前的研究中,使用一块垂直的三维加热板来模拟热能的产生以及向普朗特液体中的浓度传递。我们讨论了杜福尔理论和索雷特理论如何与浓度和能量方程相关联。为了观察粒子如何有效地与热和溶剂相互作用,使用了混合纳米粒子。它消除了粘性耗散和变化磁场的现象。开展这项研究的动机是优化生物和工业领域中溶剂和热存储的用途。本文的主要目标是探索影响纳米粒子、混合纳米粒子和三维熔化表面片行为的热能和传质方面。结合了可变热效率和可变传质。所生成的偏微分方程组(差分方程)包括浓度、速度和热能方程。使用边界层方法对数学公式进行数值计算,以乙二醇(CHO)为基础流体,针对银(Ag)、二硫化钼(MoS)纳米粒子进行计算。通过变换来建立常微分方程组以便求解。采用伽辽金有限元算法(G - FEA)来分析与不同参数相关的各个方面。已发现进入纳米粒子的运动会减少进入混合纳米粒子的运动。此外,热能和溶剂粒径的差异与磁、杜福尔、埃克特和索雷特数的变化有关。与混合纳米结构相比,通常观察到热能输出要高得多。磁场参数会降低粒子速度。与埃克特数、弹性参数和磁参数设定值相反,获得了最大量的热能,这是可变热导率的函数。就作者所知,尚未研究在热源、热辐射和粘性耗散影响下纳米流体和混合纳米流体的三维加热垂直表面对流换热情况。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5306/9668844/806774f63e80/41598_2022_20332_Fig1_HTML.jpg

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