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-   -   Boundary Condition question for Cooling Water Pumps Bay Simulation (http://www.cfd-online.com/Forums/fluent/78814-boundary-condition-question-cooling-water-pumps-bay-simulation.html)

Jaimito August 3, 2010 06:58

Boundary Condition question for Cooling Water Pumps Bay Simulation
 
Dear Colleagues,

first "saludos" everyone, this is my first post.

Iīve simulated a cooling water basin with bay suction pumps. I didnīt have any problem with the simulation but once finished I ask me if there was another better boundary condition selection.

Iīve meshed the geometry of the bay, and selected input pipe like inlet-flow, and inlet pumps area like out-flow. The other surfaces are defined as walls. Therebefore, the problem is a tube (with particulary geometry) with one imput and one output. This simulation works ok (3d,segregated,laminar), but donīt represent truly the real problem.

1š question: ŋThere is a better way to simulate the vertical pump suction? With this boundary condition selection, cavitation phenomena, vortex and swirls generated for pump suction forces can not appearing.

2š question: itīs possible assign atmosferic free surface to the top surface.


If anybody have any idea, or knows a better aproach, please let me know.

Thanks in advanced.


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