CFD simulation file for Parvancorina minchami from South Australia, relief increased by 15%, oriented at 0° to the current, MPH format

Computational fluid dynamics (CFD) simulations of water flow were performed in COMSOL. A model of Parvancorina minchami from South Australia with relief increased by 15% was oriented at 0° to the current and was fixed to the lower surface of a half-cylinder. Three-dimensional, incompressible flow of water was simulated with a normal inflow velocity inlet at the upstream end of the half-cylinder and a zero-pressure outlet at the downstream end. Slip boundary conditions were assigned to the top and sides of the half-cylinder, and no-slip boundary conditions were assigned to the Parvancorina model and the lower surface of the half-cylinder. The domain was meshed using free tetrahedral elements and the shear stress transport turbulence model was used to solve the Reynolds-averaged Navier–Stokes equations. A stationary solver was used to compute the steady-state flow patterns. Simulations were performed with an inlet velocity of 0.1, 0.2, and 0.5 m/s.

本次研究采用COMSOL软件完成了水流的计算流体动力学（CFD）仿真。以澳大利亚南部产出的明氏帕尔万珊瑚（Parvancorina minchami）为原型构建的模型，其凸起高度提升15%后，以与水流方向呈0°的方位固定于半圆柱的下表面。模拟三维不可压缩水流时，在半圆柱上游端设置法向速度进口，下游端设置零压出口。为半圆柱的顶面与侧面设置滑移边界条件，为该模型及半圆柱下表面设置无滑移边界条件。计算域采用自由四面体单元划分网格，并使用剪切应力输运湍流模型求解雷诺平均纳维-斯托克斯方程。采用稳态求解器计算稳态流场分布。本次仿真的进口速度分别为0.1、0.2和0.5 m/s。