Analysis of non-Fourier heat conduction using smoothed particle hydrodynamics
Analysis of non-Fourier heat conduction using smoothed particle hydrodynamics
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DOI：
10.1016/j.applthermaleng.2011.05.027
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发表时间：
2011-10
影响因子：
6.4
通讯作者：
V. Vishwakarma;A. Das;P. Das
中科院分区：
文献类型：
--
作者：
V. Vishwakarma;A. Das;P. Das
采用光滑粒子流体动力学（SPH）无网格离散技术分析非傅立叶热传导。首先，该技术已被用来计算在一个平板的初始非均匀温度分布与两端绝缘的温度演变。在抛物线热传导的情况下，温度分布通过单调变化达到稳态值。非傅立叶热传导的特征在于显著的温度振荡。本文的数值计算结果与问题的解析解十分吻合。其次，在一端对流边界条件和另一端受到正弦温度振荡的平板已被考虑。在对流端观察到典型的温度振荡。这是显着不同的温度变化计算抛物线热传导。
A gridless discretization technique namely smoothed particle hydrodynamics (SPH) is used to analyze non-Fourier heat conduction. First, the technique has been employed to compute the temperature evolution in a slab subjected to an initial non-uniform temperature distribution with both the ends insulated. In case of parabolic heat conduction the temperature distribution achieves the steady state value through a monotonic change. Non-Fourier heat conduction is characterized by a significant temperature oscillation. The present numerical computation closely matches the analytical solution of the problem. Next, a slab with convective boundary condition at one end and the other end subjected to a sinusoidal temperature oscillation has been considered. Typical temperature oscillation at the convective end has been observed. This is significantly different from temperature variation calculated for parabolic heat conduction.