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How to generate Fish motion

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Old   November 5, 2012, 04:22
Default How to generate Fish motion
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akshay
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Hi all,

I am relatively new to ANSYS Fluent and am trying to impose a simple UDF to move airfoil in x-direction as well as undulate (move in sinusoidal form) to generate the fish motion.
When i simulate this two motion individually it seems to be fine and when try to simulate both at a time i.e. fish undulate as well as move in x-direction, i get shape like snake movement and negative volume generated.
pls help me in this regard so that how can i simulate both motion simultaneously to get required effect.
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Old   December 16, 2012, 09:04
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Finally I did this motion.
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Old   February 9, 2013, 06:00
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Ehsan
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hi
How did you do that?what was the problem?
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Old   February 9, 2013, 06:11
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This is done by using define grid motion Macro of UDF and hook it via dynamic mesh pane.
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Old   September 8, 2013, 10:35
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Quote:
Originally Posted by akshaymanikjade View Post
Hi all,

I am relatively new to ANSYS Fluent and am trying to impose a simple UDF to move airfoil in x-direction as well as undulate (move in sinusoidal form) to generate the fish motion.
When i simulate this two motion individually it seems to be fine and when try to simulate both at a time i.e. fish undulate as well as move in x-direction, i get shape like snake movement and negative volume generated.
pls help me in this regard so that how can i simulate both motion simultaneously to get required effect.
Hi akshay
im trying to undulate the foil same u but not familiar with udf...and problem to write and compile it.
can u help and guide me?
poya0070@gmail.com
Regards
P.A
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Old   January 29, 2014, 12:54
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Satish Gupta
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Hey akshay,
I am trying to simulate a similar problem...can you upload the udf...it ll be of grt help
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