CFD simulation file for Parvancorina minchami from Russia, original relief, oriented at 90° to the current, MPH format

Computational fluid dynamics (CFD) simulations of water flow were performed in COMSOL. A model of Parvancorina minchami from Russia with original relief was oriented at 90° 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.

本研究采用COMSOL软件开展水流的计算流体动力学（CFD）仿真模拟。选取来自俄罗斯、保留原生形貌的米氏帕尔万环曲虫（Parvancorina minchami）模型，将其与水流方向呈90°夹角固定于半圆柱下表面。模拟对象为三维不可压缩水流，半圆柱上游端设置法向速度入口边界，下游端设置零压力出口边界。为半圆柱的顶面与侧面施加滑移边界条件，为该模型及半圆柱下表面施加无滑移边界条件。计算域采用自由四面体网格划分，并采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。本次模拟分别设置入口流速为0.1、0.2及0.5 m/s开展仿真。