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conservation of total and scalar mass

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Old   May 11, 2005, 05:56
Default conservation of total and scalar mass
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Hi all

I try to solve several problem with surface absorption in closed region. I use ideal gas rho=f(T,p) with additional scalar (active) which have to be absorbed at baffle surface. When I analyze the results I see that the rate of scalar mass decreasing is approximately equal to integral surface flux but total mass is constant! What is the matter?

Thanks in advance, Michael
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