A Numerical Procedure for 2D Fluid Flow Simulation in Unstructured Meshes
( Numerical Simulation - From Brain Imaging to Turbulent Flows )
Publication series ： Numerical Simulation - From Brain Imaging to Turbulent Flows
Author： António M. G. Lopes
Publisher： IntechOpen
Publication year： 2016
E-ISBN: INT6150063077
P-ISBN(Paperback): 9789535125648
P-ISBN(Hardback): 9789535125655
Subject： TP39 computer application
Keyword： 计算机的应用
Language： ENG
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
A Numerical Procedure for 2D Fluid Flow Simulation in Unstructured Meshes
Description
The present work addresses the numerical simulation of fluid flow for 2D problems. The physical principles and numerical models implemented in the software package EasyCFD are presented in a synthetic and clear way. The 2D form of the Navier-Stokes equations is considered, using the eddy-viscosity concept to take into account turbulence effects upon the mean flow field. The k-ε and the k-ω Shear Stress Transport (SST) turbulence models allow for the calculation of the turbulent viscosity. The numerical model is based on a control volume approach, using the SIMPLEC algorithm on an unstructured quadrilateral mesh. The mesh arrangement is a non-staggered type. The coordinate transformation, integration discretization and solution method for the governing equations are fully described. As an example of application, the airflow around a NACA 0012 airfoil is calculated and the results for the aerodynamic coefficients are compared with available experimental data.
Chapter