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首页> 外文期刊>Numerical Heat Transfer, Part B. Fundamentals: An International Journal of Computation and Methodology >A novel immersed boundary/Fourier pseudospectral method for flows with thermal effects
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A novel immersed boundary/Fourier pseudospectral method for flows with thermal effects

机译:具有热效应的流动的新型沉浸边界/傅里叶拟谱方法

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摘要

A novel immersed boundary method (IBM) for flows with thermal effects is proposed, combining high accuracy and low computational cost, provided by the Fourier pseudospectral method (FPSM), for the possibility of handling complex and nonperiodical geometries using the IBM. With focus on incompressible flow problems modeled by Navier-Stokes, mass, and energy equations, the method of manufactured solutions is used for the numerical verification of Dirichlet boundary conditions imposed via the IBM. Then, the proposed method is applied on two different 2-D cases: (1) energy transfer due to natural convection in a square cavity, and (2) an annulus between horizontal concentric cylinders nonuniformly heated. Good agreement with available data in the literature has been achieved.
机译:提出了一种新颖的具有热效应的流动边界方法(IBM),该方法结合了傅立叶伪谱方法(FPSM)提供的高精度和低计算成本,从而有可能使用IBM处理复杂和非周期性的几何图形。重点关注由Navier-Stokes,质量和能量方程建模的不可压缩流动问题,制造的解决方案方法用于通过IBM施加的Dirichlet边界条件的数值验证。然后,将所提出的方法应用于两种不同的二维情况:(1)由于方腔中自然对流而产生的能量传递,以及(2)水平同心圆柱体之间的环空加热不均匀。已经与文献中的可用数据达成了良好的一致性。

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