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October 22, 2014, 06:52 |
Centrifugal pump
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#1 |
New Member
venkat
Join Date: Apr 2013
Posts: 14
Rep Power: 13 |
Hi,
I am working on Cavitation in Centrifugal pumps. I have experimental data for discharge(l/s) and Total head (m). First I am matching Head vs Discharge graph in steady state for single phase flow (water, with out cavitation). My Boundary conditions used: Inlet: Mass flow Outlet: Pressure Outlet RPM: 2000 But for above boundary conditions Head is not matching. Another trail: Inlet: Pressure Outlet Outlet: Mass flow RPM: 2000 But for above boundary also conditions Head is not matching. I saw some publications on pumps. Most of the authors used above boundary conditions. I am new to this area. Can you suggest me boundary conditions for getting Head Vs Discharge graph. Any help will appreciate . Thanks in Advance Venkat |
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October 22, 2014, 13:57 |
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#2 |
Member
David Stanbridge
Join Date: Apr 2010
Location: Norwich, UK
Posts: 59
Rep Power: 16 |
A you using the Sliding Mesh Model or one of the others?
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October 28, 2014, 09:46 |
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#3 |
New Member
venkat
Join Date: Apr 2013
Posts: 14
Rep Power: 13 |
i am using MRF (moving reference frame).
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May 24, 2016, 02:22 |
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#4 |
New Member
Mehmet Kaya
Join Date: Jan 2010
Posts: 10
Rep Power: 16 |
You can use mass flow inlet and static pressure outlet BCs but make sure that your calculation domain is extended enough at the pump inlet and outlet.
If this is not the case, the outlet BC can detoriate the pressure field and lead wrong inlet presuures. |
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