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Oldroyd-B纳米流体在水平平板上流动的传热分析。

Heat transfer analysis of Oldroyd-B nanofluid flow over a horizontal plate.

作者信息

Liang Ruishi, Hanif Hanifa, Song Jie, Mahat Rahimah

机构信息

School of Mathematics and Statistics, Shaoguan University, Shaoguan, Guangdong, China.

Department of Mathematics, Sardar Bahadur Khan Women's University, Quetta, Pakistan.

出版信息

PLoS One. 2025 Apr 17;20(4):e0317297. doi: 10.1371/journal.pone.0317297. eCollection 2025.

DOI:10.1371/journal.pone.0317297
PMID:40245035
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12005521/
Abstract

Non-Newtonian fluids have grown in popularity across a wide range of engineering disciplines. Generalized Oldroyd-B fluids are a type of non-Newtonian fluid that may mimic the behavior of many dilute polymeric liquids. On the other hand, heat transmission is important because it has industrial applications. The use of nanofluids, which have a higher heat transfer capacity, can enhance the overall efficiency of the thermal system. Therefore, this research considers the generalized Oldroyd-B nanofluid over a horizontal plate. The nonlinear fractional model is solved using the finite difference method. The integer order derivatives are integrated using the Crank-Nicolson method whereas the time fractional derivatives are evaluated using the Caputo derivative. The simulations are carried out in MATLAB software. The results revealed that the retardation time parameter slow downs the fluid. The heat transfer rates increased with increasing values of the nanoparticle volume fraction. The heat transfer of regular fluid increased by 9.4% on adding nanoparticles.

摘要

非牛顿流体在广泛的工程学科中越来越受欢迎。广义Oldroyd-B流体是一种非牛顿流体，它可以模拟许多稀聚合液体的行为。另一方面，热传递很重要，因为它有工业应用。使用具有更高传热能力的纳米流体可以提高热系统的整体效率。因此，本研究考虑水平平板上的广义Oldroyd-B纳米流体。使用有限差分法求解非线性分数阶模型。整数阶导数采用Crank-Nicolson方法进行积分，而时间分数阶导数采用Caputo导数进行计算。模拟在MATLAB软件中进行。结果表明，延迟时间参数会使流体减速。传热速率随着纳米颗粒体积分数值的增加而增加。添加纳米颗粒后，常规流体的传热增加了9.4%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f8b1/12005521/738a8080b84f/pone.0317297.g012.jpg
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