计算流体力学
解算器
计算机科学
有限体积法
流体力学
边值问题
偏微分方程
离散化
有限元法
流量(数学)
有限差分法
数值偏微分方程
流体动力学中不同类型的边界条件
欧拉方程
应用数学
数学
机械
数学分析
Neumann边界条件
物理
几何学
Robin边界条件
程序设计语言
热力学
作者
Mohd Hafiz Zawawi,A. Saleha,A. Salwa,Noor Hafizah Hassan,Nazirul Mubin Zahari,Mohd Zakwan Ramli,Zakaria Che Muda
出处
期刊:Nucleation and Atmospheric Aerosols
日期:2018-01-01
被引量:56
摘要
Computational fluid dynamics (CFD) provides numerical approximation to the equations that govern fluid motion. Application of the CFD to analyze a fluid problem requires the following steps. First, the mathematical equations describing the fluid flow are written. These are usually a set of partial differential equations. These equations are then discretized to produce a numerical analogue of the equations. The domain is then divided into small grids or elements. Finally, the initial conditions and the boundary conditions of the specific problem are used to solve these equations. All CFD codes contain three main elements: (1) A pre-processor, which is used to input the problem geometry, generate the grid, and define the flow parameter and the boundary conditions to the code. (2) A flow solver, which is used to solve the governing equations of the flow subject to the conditions provided. There are four different methods used as a flow solver: (i) finite difference method; (ii) finite element method, (iii) finite volume method. (3) A post-processor, which is used to massage the data and show the results in graphical and easy to read format.
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