on Sunday 18 May 2008 by RK in content > Solutions hits: 5129 not rated -
Computational Fluid Dynamics (CFD) is a mathematical technique used to model fluid flow and heat transfer
CFD/Thermal
Computational Fluid Dynamics (CFD) is a mathematical technique used to model fluid flow and heat transfer. CFD calculations are based upon the fundamental governing equations of fluid dynamics:
The conservation of
Mass
Momentum and
Energy.
These equations combine to form the Navier-Stokes equations, which are a set of partial differential equations that cannot be solved analytically except in a limited number of cases.
Most commercial and research CFD analysis codes rely on one of the following techniques:
Finite Difference Method (FDM)
Finite Element Method (FEM)
Spectral Methods
Macroscopic Fluid Modeling (Lattice Methods)
Finite Volume Method (FVM)
Each of these methods requires the definition of discrete points in space at which variables like velocity, pressure, temperature etc. will be computed. While the governing equations are always the same, the particular geometry with initial and boundary conditions determines a unique solution for each particular problem.
1. Introduction
It is estimated that 50-90% of structural failure is due to fatigue, thus there is a need for quality fatigue design tools. However,...
