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gravitational acceleration in laminar pipe flow

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Old   January 4, 2010, 23:19
Default gravitational acceleration in laminar pipe flow
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i`m modeling a horizontal pipe with laminar flow... the solver is set to Discrete Phase Model, as i m` also simulating the injection of nano-sized particles with the base fluid ( water)....i`m at doubt as to what is the value of gravitational acceleration that i shud set in the operating conditions tab ( both the X and Y components)..... i don think it can be 9.81..pls help....
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