Learning Forum

[AleVera]

Hello,

I am using CFX to simulate the flow in a bathtub with a drainage at the bottom. I have a simple rectangular Domain with an inlet pipe flow and an outlet pipe. When setting the analysis, I have chosen water as fluid in the domain, while also adding buoyancy in the -y direction. Inlet domain set to 10 ft/s. Reference pressure at 1 atm and relative to 0 atm. Outlet set to static pressure. Also I made the top face of the domain an opening since in a bathtub the top is open, and other faces set to wall no slip condition, turbulence set to SST. For type of problem I chose Steady State. When finished and viewing the flow of water, I see that the flow goes out from the opening while some leaves through outlet.  While also when using streamline function at post, the water particles shoot right up to the opening. 

My problem is that I’m trying to simulate a bathub being filled and water being accumulated and reaching the point where inflow= outflow, I don’t want an overflow in the top opening. Is it that I have to do transient instead of ss? Or do I have to put another domain consisting of air in order to keep water from going to the top? 

[Rob]

Which multiphase model are you using?

[AleVera]

I am not using any multiphase. Should i be using one?

Also I am studying the flow in a particular section i am not really concerned on what is happening at the particle level, Would I be choosing Eulerian Multiphase?

 

Thank You! I appreciate the help