CFD simulation file for null model of Parvancorina minchami from South Australia, MPH format

Computational fluid dynamics (CFD) simulations of water flow were performed in COMSOL. A null model of Parvancorina minchami from South Australia 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）模拟。将采自南澳大利亚的帕瓦科林纳虫（Parvancorina minchami）零模型固定于半圆柱的下表面。针对三维不可压缩水流开展模拟，半圆柱上游端设置法向流入速度入口，下游端设置零压力出口。半圆柱的顶面与侧面采用滑移边界条件，帕瓦科林纳虫模型及半圆柱下表面采用无滑移边界条件。计算域采用自由四面体单元划分网格，选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。本次模拟的入口流速分别设置为0.1、0.2与0.5 m/s。