mkgeo_contraction(1rheolef) | rheolef | mkgeo_contraction(1rheolef) |
NAME¶
mkgeo_contraction - mesh of an abrupt contraction (rheolef-7.2)
SYNOPSIS¶
mkgeo_contraction [options] [nx [ny]]
EXAMPLE¶
The following command build a triangle-based 2d unstructured mesh of the [-10,0]x[0,4] u [0,10]x[0,1] mesh
mkgeo_contraction
geo contraction.geo
DESCRIPTION¶
This command is convenient for building a mesh for the abrupt contraction, as it is a very classical benchmark in complex fluid flow problems. It calls bamg unstructured mesh generator with anisotropy feature. The mesh files goes on name.geo where name is the basename for the output (see option -name below). The three auxiliary files required for automatic mesh generation with Rheolef combined with bamg are also provided:
name.bamg
name.bamgcad
name.dmn
THE GEOMETRY¶
The geometry is [-Lu,0]x[0,d] u [0,Ld]x[0,1]. By default c=4 is the contraction ratio and Lu=Ld=10 are the upstream and downstream pipe lengths.
-c float
-Lu float
-Ld float
-cartesian
-zr
-rz
THE DISCRETIZATION¶
The optional nx and ny arguments are integers that specifies the subdivision in each direction. By default nx=1 and ny=nx. Changing the density applies the factor 1/nx to all the mesh edges lengths.
-hmin float
BOUNDARY DOMAINS¶
The boundary sides are represented by domains: axis, wall, upstream and downstream.
OTHERS OPTIONS¶
-name string
-[no]split
-[no]clean
-[no]verbose
IMPLEMENTATION¶
This documentation has been generated from file main/sbin/mkgeo_contraction.sh
AUTHOR¶
Pierre Saramito <Pierre.Saramito@imag.fr>
COPYRIGHT¶
Copyright (C) 2000-2018 Pierre Saramito <Pierre.Saramito@imag.fr> GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
Thu Jul 14 2022 | Version 7.2 |