首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >SPECTRAL SIMULATION OF THERMOCAPILLARY CONVECTION WITH DEFORMABLE FREE SURFACE USING BOUNDARY-FITTED COORDINATES
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SPECTRAL SIMULATION OF THERMOCAPILLARY CONVECTION WITH DEFORMABLE FREE SURFACE USING BOUNDARY-FITTED COORDINATES

机译:利用边界拟合坐标对具有可变形自由表面的热毛细对流进行光谱模拟

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摘要

A Chebyshev collocation spectral method has been developed to investigate thermocapillary and buoyancy-induced flow with a deformable free surface. The flow in a two-dimensional cavity is considered, and the equations of motion are solved in a generalized boundary-fitted coordinate (BFC) system to handle the free-surface deformation. The BFC grid is generated using a finite-difference Poisson solver. The metrics of transformation are evaluated using a spectral approximation for the mapping of the physical grid onto the computational grid. The transformed equations are solved using the influence matrix technique in order to produce a solenoidal flow field. Results from the two-dimensional calculations show that this method can be competitive with finite-element and spectral-element solutions previously reported in the literature. [References: 41]
机译:已经开发出一种切比雪夫(Chebyshev)搭配光谱方法,以研究具有可变形自由表面的热毛细管和浮力引起的流动。考虑二维空腔中的流动,并在广义边界拟合坐标(BFC)系统中求解运动方程,以处理自由表面变形。 BFC网格是使用有限差分泊松求解器生成的。使用频谱近似来评估转换的度量,以将物理网格映射到计算网格。使用影响矩阵技术对转换后的方程进行求解,以产生螺线管流场。二维计算的结果表明,该方法可以与文献中先前报道的有限元和频谱元素解决方案竞争。 [参考:41]

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