pimpleDyFoam mesh problems with interacting areas!

magjohan · January 27, 2012, 10:38

Hi!

Im using temporarily OpenFOAM 2.1 and want to simulate a setup containing two gears in a house (pumping flow). The thing is that it sounds easy but gets almost immediately problematic since the rotating mesh region from the first gear interact with the region of the second gear.

So far, I've been looking at the propeller tutorial, its a very good tutorial and the problematic in the case is comparable with the one that Im facing, except the interaction between the gears!

A possible solution would be to pre-mesh the case and rotate the gears inside the mesher, but will take a lot of time and effort.

Please OFoamers, give me some tips or hint how to solve this!

Thx!

kid · April 12, 2012, 07:13

Hi Sorry,
You might thinking i am answering your problem. But instead i am in need for advice.

From your post it seems you have done the propeller problem. (At least same case)
I am just doing that, but things are pritty complicated for me in this tutorial.

2. What is the role of importing geometry , i do not know if atall it is required? ( At least the object which has to rotate ( suppose a turbine).

3. How to i create the innerCylinder and outerCylinder?
1.How to create mesh
"surfaces=
innerCylinder
innerCylinderSmall
outerCylinder
propellerTip
propellerStem1
propellerStem2
propellerStem3
"
?

regards,
CFDkid

January 27, 2012, 10:38	pimpleDyFoam mesh problems with interacting areas!	#1
magjohan New Member Johan Magnusson Join Date: Oct 2010 Posts: 21 Rep Power: 16	Hi! Im using temporarily OpenFOAM 2.1 and want to simulate a setup containing two gears in a house (pumping flow). The thing is that it sounds easy but gets almost immediately problematic since the rotating mesh region from the first gear interact with the region of the second gear. So far, I've been looking at the propeller tutorial, its a very good tutorial and the problematic in the case is comparable with the one that Im facing, except the interaction between the gears! A possible solution would be to pre-mesh the case and rotate the gears inside the mesher, but will take a lot of time and effort. Please OFoamers, give me some tips or hint how to solve this! Thx!

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April 12, 2012, 07:13		#2
kid Senior Member cfdkid Join Date: Mar 2009 Posts: 133 Rep Power: 17	Hi Sorry, You might thinking i am answering your problem. But instead i am in need for advice. From your post it seems you have done the propeller problem. (At least same case) I am just doing that, but things are pritty complicated for me in this tutorial. 2. What is the role of importing geometry , i do not know if atall it is required? ( At least the object which has to rotate ( suppose a turbine). 3. How to i create the innerCylinder and outerCylinder? 1.How to create mesh "surfaces= innerCylinder innerCylinderSmall outerCylinder propellerTip propellerStem1 propellerStem2 propellerStem3 " ? regards, CFDkid