CFD Online Discussion Forums - how to use DEFINE_GEOM to change the geometry with time?

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how to use DEFINE_GEOM to change the geometry with time?

Hi,
I am simulating the flow around an object deforming with time. The time-dependent function of the boundary is already known(it has the form of y=f(x,t)).
I've got some basic infomation of DEFINE_GEOM on this page:
http:////www.sharcnet.ca/Software/An...fine_geom.html
However, it seems no argument related to time is included in this script. I tried to add the variable time like this:

Code:

DEFINE_GEOM(BL_FP1,domain,dt,position,time)

and the UDF failed to be compiled.
Has anyone worked on similar case before? Any help or suggestion is welcome.
Thank you.

You can use the following code.

Code:

DEFINE_GEOM (BL_FP1, d, dt, position)

{

real time = CURRENT_TIME;







...



}

It works! Thank you : )