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2D Box dropping into water

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Old   October 27, 2013, 09:46
Unhappy 2D Box dropping into water
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Kai Ling
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Hi guys,

To better suit the project I am working on, I am trying to build the tutorial of 2D box falling into water from scratch, i.e. create the geometry and mesh file by myself.

However, when I use a UDF with constant acceleration downwards, I get results like this:

I have had compiled my own UDF with the tutorial mesh file and it had worked fine thus I do not think it plays a part in creating this phenomenon. (My UDF makes the box drop at -1ms^-2)

Could anybody explain to me why this had occured? Why was there this bending phenomenon in the water and jetting at the left side? Did I miss out any steps when creating my mesh in gambit?
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Old   April 9, 2014, 19:06
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would you please put your UDF and say about your setting? maybe I can help you
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dynamic mesh, fluent, multiphase

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