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-   -   the mean of injection velocity magnitude and why wall film can't be used in steady? (http://www.cfd-online.com/Forums/cfx/106164-mean-injection-velocity-magnitude-why-wall-film-cant-used-steady.html)

sope111 August 21, 2012 05:04

the mean of injection velocity magnitude and why wall film can't be used in steady?
 
I'm simulate spary. But i'm confused by several question .

1.what‘s the mean of injection velocity magnitude in particle injection regions?

I don't konw the difference bewteen injection velocity magnitude and injection direction (contions three velocity of x ,y,z).

Do they coincide with each other or are the same with each other?

2 why wall film can't be used in steady?

Equation dependent(set restitution coefficent ) isn't suitable for my model,
because particle can bounce ,spread and splash(because i simulate it at a constant temperature and cold-wetting surroundings)

Must i simulate it using Elsaesser Particle-Wall Interaction Model in transient simulate???
Transient simulate will greatly increase calculation

Best regards


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