2d smoke velocity to vdb

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Hello,
I have a 2d smoke simulation , and i am advecting water simulation with velocity field of that sim.
My question is , because 2d smoke doesnt have any thickness i need to adjust y translate of 2d pyro everytime i change particle seperation , is there any way to transfer 2d pyro field to vdb, more thicker field?
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gif
Edited by stretched - 2019年2月5日 22:55:03

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problem.gif (3.1 MB)

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Can't you just scale it in Y?
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2d pyro doesnt have any thickness, transform is not an option.
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