|
[Sponsors] |
March 31, 2021, 23:09 |
Boundary layer termination
|
#1 |
New Member
James
Join Date: Nov 2015
Posts: 2
Rep Power: 0 |
Hi all,
Having a lot of trouble with gmsh trying to do an axisymmetric pipe flow. The issue I am having is where the boundary layer on the outside meets the inlet line. The boundary layer elements get highly skewed. How do I tell gmsh to continue the boundary to the inlet to avoid this? An image is here: https://imgur.com/a/mq8TkHD gmsh file: grid_size = 0.05; Point(1) = {0,0,0,grid_size}; Point(2) = {1,0,0,grid_size}; Point(3) = {1,1,0,grid_size}; Point(4) = {0,1,0,grid_size}; Line(5) = {1,2}; //inlet Line(6) = {2,3}; //tunnel wall Line(7) = {3,4}; //outlet Line(8) = {4,1}; //axis of rotation Line Loop(9) = {5,6,7,8}; Plane Surface(10) = 9; // Boundary layers: Field[1] = BoundaryLayer; Field[1].EdgesList = {6}; Field[1].hfar = 0.05; Field[1].hwall_n = 0.00005; Field[1].Quads = 1; BoundaryLayer Field = 1; |
|
Tags |
boundary layer mesh, gmsh |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[snappyHexMesh] Holes in internal mesh when adding boundary layer snappyHex | otaolafr | OpenFOAM Meshing & Mesh Conversion | 3 | February 8, 2021 08:19 |
Question about adaptive timestepping | Guille1811 | CFX | 25 | November 12, 2017 17:38 |
Centrifugal fan-reverse flow in outlet lesds to a mass in flow field | xiexing | CFX | 3 | March 29, 2017 10:00 |
Any formula for approximating the boundary layer thickness around a cylinder? | bestniaz | Main CFD Forum | 0 | October 24, 2015 02:00 |
Low Mixing time Problem | Mavier | CFX | 5 | April 29, 2013 00:00 |