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首页> 外文期刊>Physical review, E. Statistical physics, plasmas, fluids, and related interdisciplinary topics >Rossby vortex simulation on a paraboloidal coordinate system using the lattice Boltzmann method - art. no. 056703
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Rossby vortex simulation on a paraboloidal coordinate system using the lattice Boltzmann method - art. no. 056703

机译:使用晶格Boltzmann方法在抛物面坐标系上进行Rossby涡旋模拟-艺术。没有。 056703

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摘要

In this paper, we apply our compressible lattice Boltzmann model to a rotating parabolic coordinate system to simulate Rossby vortices emerging in a layer of shallow water flowing zonally in a rotating paraboloidal vessel. By introducing a scaling factor, nonuniform curvilinear mesh can be mapped to a flat uniform mesh and then normal lattice Boltzmann method works. Since the mass per unit area on the two-dimensional (2D) surface varies with the thickness of the water layer, the 2D flow seems to be "compressible" and our compressible model is applied. Simulation solutions meet with the experimental observations qualitatively. Based on this research, quantitative solutions and many natural phenomena simulations in planetary atmospheres, oceans, and magnetized plasma, such as the famous Jovian Giant Red Spot, the Galactic Spiral-vortex, the Gulf Stream, and the Kuroshio Current, etc,, can be expected. [References: 18]
机译:在本文中,我们将可压缩晶格Boltzmann模型应用于旋转抛物线坐标系,以模拟在旋转抛物线形容器中区域性流动的浅水层中出现的Rossby涡旋。通过引入比例因子,可以将不均匀的曲线网格映射到平坦的均匀网格,然后使用正常的格子Boltzmann方法。由于二维(2D)表面上每单位面积的质量随水层厚度的变化而变化,因此2D流动似乎是“可压缩的”,因此我们应用了可压缩模型。仿真解决方案定性地满足了实验观察的要求。根据这项研究,可以在行星大气,海洋和磁化等离子体中进行定量解和许多自然现象模拟,例如著名的木星大红斑,银河系螺旋旋涡,墨西哥湾流和黑潮等。被期望。 [参考:18]

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