[ANSYS Meshing] Ansys Meshing increase cell length along flow direction

yulu · August 25, 2016, 16:53

Hi everyone I'm trying to simulate flows in a pipe with a irregular cross-section shape (I call it near-semicircular shape, imagine a semicircle with a flat bottom).

The pipe length is more than 50 times the width of channel, but When generating mesh the cells have longer length along the width of pipe but shorter length long the flow (pipe) direction, which is opposite to what I want.

How can I improve this? To increase the cell length along the flow direction and decrease the cell length along the diameter?

Many thanks.

Kapi · August 25, 2016, 19:01

give sizing on both

yulu · August 26, 2016, 05:03

Quote:

Originally Posted by Kapi

give sizing on both

Hi Kapi can you please tell me how to do that? I'm using the Mesh package under Fluent analysis system. I couldn't seem to find where to specify cell size for different direction?

Kapi · August 31, 2016, 21:57

you may want to use mesh separately if you want to provide sizing and other function to re-mesh it.

August 25, 2016, 16:53	Ansys Meshing increase cell length along flow direction	#1
yulu New Member Yu Lu Join Date: Jul 2015 Location: England Posts: 26 Rep Power: 10	Hi everyone I'm trying to simulate flows in a pipe with a irregular cross-section shape (I call it near-semicircular shape, imagine a semicircle with a flat bottom). The pipe length is more than 50 times the width of channel, but When generating mesh the cells have longer length along the width of pipe but shorter length long the flow (pipe) direction, which is opposite to what I want. How can I improve this? To increase the cell length along the flow direction and decrease the cell length along the diameter? Many thanks.

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August 25, 2016, 19:01		#2
Kapi Senior Member Join Date: Apr 2014 Location: Melbourne Posts: 584 Rep Power: 14	give sizing on both

August 31, 2016, 21:57		#4
Kapi Senior Member Join Date: Apr 2014 Location: Melbourne Posts: 584 Rep Power: 14	you may want to use mesh separately if you want to provide sizing and other function to re-mesh it.