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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Numerical study of unsteady boundary layer flow and heat transmission of a nano-fluid past a continuously stretching sheet immersed in porous media
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Numerical study of unsteady boundary layer flow and heat transmission of a nano-fluid past a continuously stretching sheet immersed in porous media

机译：纳米流体未纵向边界层流量的数值研究过去浸入多孔介质中的连续拉伸薄片

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Purpose - This paper aims to incorporate a numerical investigation of unsteady flow of nano-fluid near the boundary wall and heat transmission over a flat sheet in porous media under the assumption that sheet is continuously stretching. A comprehensive study is accomplished to probe the impacts of different physical parameters on heat transmission and fluid flow. Design/methodology/approach - The problem is designed mathematically by using Navier-Stokes equations and corresponding equations are transmuted into non-dimensional form, which are reduced to local non-similarity equations. Implicit finite difference scheme is used to attain a non-similar solution for values of similarity variable ranging in [0,1] Findings - The reduced Nusselt number is a decreasing function of each dimensionless number, while the reduced Sherwood number is an increasing function of each considered value of parameters Pr, Sc, Nb and Nt. Originality value - Motivated by the industrial, technological and scientific importance, the objective of this study is to discuss the unsteady flow generated by linear stretching of the surface in Nano-fluid in a porous medium. However, the investigation of unsteady boundary layer flow and heat transfer of a Nano-fluid past a stretching surface immersed in a porous medium has not been discussed yet. Furthermore, finite difference scheme is used to solve the problem, and authenticate results are achieved which are in good agreement with published work.
机译：目的 - 本文旨在将纳米流体附近的非定常调查纳入边界壁附近的不稳定流，并在多孔介质中的平板上的热传递，在该纸张连续拉伸的情况下。实现了综合研究以探讨不同物理参数对热传输和流体流动的影响。设计/方法/方法 - 问题通过使用Navier-Stokes方程式数学设计，并且对应的等式被传输到非尺寸形式，这减少到局部非相似性方程。隐式有限差分方案用于获得相似性变量的值的非相似解，减少的营养数是每个无量纲数的降低函数，而降低的舍伍德数是越来越多的函数每个考虑参数Pr，sc，nb和nt的值。原创价值 - 受工业，技术和科学的重要性，本研究的目的是讨论在多孔介质中纳米流体中表面的线性拉伸产生的不稳定流。然而，尚未讨论对纳米流体的不稳定边界层流量和纳米流体的热传递的研究尚未讨论浸入多孔介质中的拉伸表面。此外，使用有限差分方案来解决问题，并实现了认证结果，这与公布的工作良好。

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