Temperature dependent viscosity effect and conductivity on the sphere rotating surface

IF 6.4 2区工程技术 Q1 MECHANICS International Communications in Heat and Mass Transfer Pub Date : 2025-04-01 Epub Date: 2025-02-19 DOI:10.1016/j.icheatmasstransfer.2025.108657

Mair Khan , T. Salahuddin , Sadia Ayub , Basem Al Awan , Meznah M. Alanazi , M. Afzal

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Abstract

Consider a steady flow analysis with temperature dependent viscosity and variable thermal conductivity near a rotating sphere. Additionally, a temperature dependent viscosity and variable thermal conductivity has been assumed for the current analysis. Partial differential equation system is converted into a differential system for distinct regions near the boundary layer region. Power series is used to calculate the solution of the problem. Ordinary differential systems are obtained by using this mythology. The sensitivity parameter shows reducing impact as it is showed for rotating disk problem. Temperature dependent liquid viscosity is analyzed to decrease the base flow profile the range, but for gases opposite impact is noticed. Variable thermal conductivity increase the temperature profile. The comparative results is evaluated for a limited case and good agreement is shown with previously published work.

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温度对球体旋转表面粘度效应和电导率的影响

考虑在旋转球体附近具有温度依赖粘度和可变导热系数的稳定流动分析。此外，对于当前的分析，假定粘度依赖于温度，导热系数是可变的。将偏微分方程组转化为边界层附近不同区域的微分方程组。幂级数被用来计算问题的解。常微分系统就是用这个神话得到的。灵敏度参数与旋转圆盘问题一样，显示出减小的影响。分析了温度对液体粘度的影响，降低了基流分布的范围，但对气体的影响正好相反。可变的导热系数增加了温度分布。比较结果是评估了一个有限的情况下，良好的协议显示与以前发表的工作。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.