|February 25, 2013, 14:25||
Free surface is not falling (VOF MODEL, TANK DRAINAGE)
Join Date: Jul 2012
Posts: 18Rep Power: 5
I am modeling a tank drainage on VOF model of Fluent. Tank has a simple rectangular shape having one inlet at the top and three outlets at bottom. Tank's lower volume is filled with water (using adapt region) and upper volume by air.
Inlet: Velocity inlet
Outlets: Pressure outlet
Incoming Fluid through inlet is water.
Explicit scheme, CFL=2.0, Geo-reconstruct, Variable Time iteration
Inlet area is large than the sum of three outlets.
(a) When I put X m/s velocity at inlet BC, all three outlets shows about same outlet velocity. Is it correct?
(b) There is no change in free surface level of water in the tank. I have checked REPORT FLUXES of inlet and all outlets, inlet flux=outlets fluxes.
why free surface is not falling or rising? I have changed inlet velocity but there is no change in free surface and incoming & out going fluxes remains constant. In practical phenomenon free surface should fall.
Please help me.
Last edited by Blue; February 25, 2013 at 14:34. Reason: image
|July 4, 2013, 09:41||
Volume of fraction
Join Date: Jul 2013
Posts: 7Rep Power: 4
I want to modelling reactor through volume of fraction please help how to make geometry and export this to fluent .Please guide me.
|November 28, 2013, 06:51||
Join Date: Oct 2012
Posts: 17Rep Power: 4
I am trying to simulate water draining from at a tank at 10 meter elevation through a pipe. I am using ANSYS FLUENT to do that. I am using VOF for modelling.
I am having difficulties in defining the inlet and outlet boundary condition.
Right now, I am using pressure-inlet and pressure-outlet for inlet and outlet boundary conditions, but after running the code, it shows a lot of secondary flow within the tank and pipe.
anyone have an idea about that?
|fluent, tank drain, tank emptying, tank filling, vof model|
|Thread||Thread Starter||Forum||Replies||Last Post|
|UDF Defining VOF Free Surface at Outlet||Alex||Fluent UDF and Scheme Programming||13||August 8, 2012 16:50|
|UDF for inlet BC, Free Surface Open Channel Flow VOF||arshiya4||Fluent UDF and Scheme Programming||3||March 6, 2012 19:13|
|CFX4.3 -build analysis form||Chie Min||CFX||5||July 12, 2001 23:19|
|how to model a free surface||lr||FLUENT||5||December 8, 2000 08:51|
|free convection heat transfer from a heated horizontal surface through a liquid to a thin cooled fin||Kaushik||FLUENT||1||May 8, 2000 06:47|