moving and deforming mesh

simulation_boy · September 16, 2016, 08:58

Hello everybody,
I want to move the upper wall (in negative y-direction) of a frustum of pyramid (first picture). I do this with the option Dynamic Mesh -> Layering -> Rigid Body and use a profile file to specify the direction and velocity of the movement.
My question is, how i can shrink the moved wall also in x- and y- direction too, so that the wall doesn't look like in the second picture below but rather behave like the fluid level of a tank.

An example for an profile file can looks like this:

mvx.prof
++++++++++++++++++++++++++++++++++
((mvx3 point 7)
(time 0.0 2.0 10.0 12.0 14.0 22.0 24.0)
(v_y 0.0 -0.03 -0.03 0.0 0.03 0.03 0)
)
++++++++++++++++++++++++++++++++++

First picture
https://www.dropbox.com/s/4ksxx46y6l...all01.jpg?dl=0

Second picture
https://www.dropbox.com/s/07ldp6838c...all02.jpg?dl=0

simulation_boy · September 19, 2016, 06:21

Hello again,

has nobody any idea??

Am I supposed to use a UDF to solve this problem or is there another solution?

Would be glad for any hint.

Regards,

simulation_boy · September 19, 2016, 10:38

Ok, found out that if you want to move and deform a mesh you have to use a udf.

Dynamic Mesh Define Macros are described here:
https://www.sharcnet.ca/Software/Flu...udf/node75.htm

In combination with the time dependency you've to use the time-dependent macros:
https://www.sharcnet.ca/Software/Flu...df/node105.htm

Regards.

September 16, 2016, 08:58	moving and deforming mesh	#1
simulation_boy New Member Join Date: Sep 2016 Posts: 3 Rep Power: 10	Hello everybody, I want to move the upper wall (in negative y-direction) of a frustum of pyramid (first picture). I do this with the option Dynamic Mesh -> Layering -> Rigid Body and use a profile file to specify the direction and velocity of the movement. My question is, how i can shrink the moved wall also in x- and y- direction too, so that the wall doesn't look like in the second picture below but rather behave like the fluid level of a tank. An example for an profile file can looks like this: mvx.prof ++++++++++++++++++++++++++++++++++ ((mvx3 point 7) (time 0.0 2.0 10.0 12.0 14.0 22.0 24.0) (v_y 0.0 -0.03 -0.03 0.0 0.03 0.03 0) ) ++++++++++++++++++++++++++++++++++ First picture https://www.dropbox.com/s/4ksxx46y6l...all01.jpg?dl=0 Second picture https://www.dropbox.com/s/07ldp6838c...all02.jpg?dl=0

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Moving Deforming Mesh	Riccardo	FLUENT	18	June 13, 2016 10:16
one piston dynamic deforming and mesh moving simultaneously	john Lu	FLUENT	1	June 20, 2014 08:13
Moving and deforming mesh	paolo	FLUENT	0	June 19, 2003 09:12
udf for moving and deforming mesh	xie haibo	FLUENT	4	October 27, 2002 07:45
Moving / Deforming mesh	Alexandre	FLUENT	1	July 7, 2001 06:44

September 19, 2016, 06:21		#2
simulation_boy New Member Join Date: Sep 2016 Posts: 3 Rep Power: 10	Hello again, has nobody any idea?? Am I supposed to use a UDF to solve this problem or is there another solution? Would be glad for any hint. Regards,

September 19, 2016, 10:38		#3
simulation_boy New Member Join Date: Sep 2016 Posts: 3 Rep Power: 10	Ok, found out that if you want to move and deform a mesh you have to use a udf. Dynamic Mesh Define Macros are described here: https://www.sharcnet.ca/Software/Flu...udf/node75.htm In combination with the time dependency you've to use the time-dependent macros: https://www.sharcnet.ca/Software/Flu...df/node105.htm Regards.