How to define complex rotating mode of domain

Melvins · November 30, 2015, 09:12

I want to do a simulation of two separated degrees of rotating freedoms for a sphere domain.
But in CFX-pre it limits that only one rotating axis can be defined in one domain.
Please help me, thanks a lot!

baty · November 30, 2015, 15:47

if I properly understood you ,first set up additional coordinate system.
Defining a second doainm, select the second coordinate system

Melvins · December 1, 2015, 01:37

Quote:

Originally Posted by baty

if I properly understood you ,first set up additional coordinate system.
Defining a second doainm, select the second coordinate system

Thank you for replying.
I have tried what you said, but is it OK when the same location is specified for two domains?

baty · December 1, 2015, 15:50

In CFX-pre, You can add as you want new Coordinate frames (tree on left site-coordinate frames- right click-inser-coorddinate frame, named -and decide how and when the new coordinate system will be.)
Then, when You create a new rotating domain, in the Location and type- coordinate frame , choose You newly created, and on the bottom, in AXIS Definition, choose axis ( Global XYZ for COORD 0; 1.1 1.2 1.3 for Coord 1 etc)

November 30, 2015, 09:12	How to define complex rotating mode of domain	#1
Melvins New Member Chen Di Join Date: Apr 2014 Posts: 10 Rep Power: 13	I want to do a simulation of two separated degrees of rotating freedoms for a sphere domain. But in CFX-pre it limits that only one rotating axis can be defined in one domain. Please help me, thanks a lot!

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November 30, 2015, 15:47		#2
baty New Member Bartek Join Date: Nov 2015 Location: Szczecin, Poland Posts: 8 Rep Power: 12	if I properly understood you ,first set up additional coordinate system. Defining a second doainm, select the second coordinate system

December 1, 2015, 15:50		#4
baty New Member Bartek Join Date: Nov 2015 Location: Szczecin, Poland Posts: 8 Rep Power: 12	In CFX-pre, You can add as you want new Coordinate frames (tree on left site-coordinate frames- right click-inser-coorddinate frame, named -and decide how and when the new coordinate system will be.) Then, when You create a new rotating domain, in the Location and type- coordinate frame , choose You newly created, and on the bottom, in AXIS Definition, choose axis ( Global XYZ for COORD 0; 1.1 1.2 1.3 for Coord 1 etc)