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Flow Past Moving Capsule in Pipe

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Old   November 21, 2015, 14:58
Question Flow Past Moving Capsule in Pipe
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Hi all,
I only have a basic understanding of ANSYS Fluent so please excuse if my question is simple.

I am looking to simulate a capsule traveling within a pipe against a fluid flow of 0.3m/s. The capsule will start at 0m/s in the centre of the pipeline and then accelerate at 0.1m/s untill reaching the end of the pipe. The capsule will remain in the centre of the pipe the entire time.

From the simulation I hope to produce lift and drag coefficents on the capsule and velocity/pressure/streamline data of the surrounding flow.
I hage already modelled a 2D flow regime with the capsule removed using Boolean Subtraction. I've used a basic mesh with inflation around the capsule to start of with but I'll improve this once I get the thing solving.

Can anyone point me in the correct direction of how to achive capsule motion?? Any links to tutorials or examples would be greatly appreciated.

Thanks in advance.
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Old   November 24, 2015, 04:33
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Hi,
search for dynamic or moving mesh tutorial.
Basically, you need to include the capsule inside a moving mesh box and write an udf to let it accelerate.
The other mesh sorrounding that moving box will be remeshed.
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