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 Oil Flow Rate Last Post 27 Mar 2013 05:03 PM by Noushka. 4 Replies. Sort: Oldest First Most Recent First
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Noushka

New Member
Posts:3

 16 Mar 2013 01:42 AM Hi, Would anyone have an idea how I could estimate the flow rate of Heavy Fuel Oil at the bottom of a pierced tank? Viscosity: 380 cst at 32 degrees Celsius I know that Q=VA and V=(2.g.h)^0.5 But that doesnt account for viscosity... Thanks.
Niel

Basic Member
Posts:193

 17 Mar 2013 03:23 AM Have you applied Stokes Flow equations across the interface? http://en.wikipedia.org/wiki/Stokes_Flow Niel Leon engineering.com
Noushka

New Member
Posts:3

 17 Mar 2013 05:48 PM Thanks for the reply Niel. I dont know much about creeping flow theory, but I guess the precise way to solve this problem, would be to do a complete CFD analysis. I was just wondering if there was a simple hand calculation check I could use to get an idea of the flow rate out of the hole. I already know the depth and size of the hole in the tank, but I have no idea how to account for the fact that the oil here is very thick / viscous.
Niel

Basic Member
Posts:193

 19 Mar 2013 02:37 AM If you know the dynamic viscosity of the fluid you can apply it to the Stokes equiation and that should provide you with the answer. Niel
Noushka

New Member
Posts:3

 27 Mar 2013 05:03 PM Yeah I now the dynamic viscosity, but it doesnt seem to be quite straightforward to simply use the stroke equations for a practical example like this. I can calculate the pressure gradient, but how could I know the second derivative of speed , and the applied body force f?
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