How to use UDF to define particle injection?

May 28, 2008, 10:47

I want the 3000 particles' velocities are equal to the local fluid velocites (in a 2D domain). The particles are released uniformly at one cross section. How can i use UDF to get that? I don't want to use 'file' to achieve that. Thanks in advance.

May 31, 2008, 06:45

why u dont want to use a file?

May 31, 2008, 21:39

I want a uniform release of the particles within 0.0014m. There are more than 3000 thousand particles. I tried to use rake. But the maximum was just around 1000 points. So i am wondering whether i can use udf to achieve more than 3000 points within 0.0014 m.

May 28, 2008, 10:47	How to use UDF to define particle injection?	#1
Hao Guest Posts: n/a	I want the 3000 particles' velocities are equal to the local fluid velocites (in a 2D domain). The particles are released uniformly at one cross section. How can i use UDF to get that? I don't want to use 'file' to achieve that. Thanks in advance.

May 31, 2008, 06:45	Re: How to use UDF to define particle injection?	#2
per Guest Posts: n/a	why u dont want to use a file?

May 31, 2008, 21:39	Re: How to use UDF to define particle injection?	#3
Hao Guest Posts: n/a	I want a uniform release of the particles within 0.0014m. There are more than 3000 thousand particles. I tried to use rake. But the maximum was just around 1000 points. So i am wondering whether i can use udf to achieve more than 3000 points within 0.0014 m.

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