Centrifugal Pump No Initial Conditions Known

osulax · March 31, 2017, 19:36

Hey Everyone!

I just started using Star-CCM+ and I am trying to use it to predict the pressure and mass flow using only 3D data and impeller rotation speeds. Is this possible? How would I go about setting up the model? Setting the boundary conditions is really throwing me for a loop.

The solution I thought of was a mass flow inlet and a pressure outlet and set them far enough away that I can measure the flow and pressure before the 0 conditions influence the flow too much. Not sure how that would turn out though.

Any help or directions to instructions would be greatly appreciated!

ernarasimman · June 4, 2017, 15:08

Normally for MRF based one total pressure inlet and static pressure outlet is enough .. because based on rotation speed will give massflux data...and increase speed step by step ...so nope in initial conditions

Sent from my Lenovo A7020a48 using CFD Online Forum mobile app

March 31, 2017, 19:36	Centrifugal Pump No Initial Conditions Known	#1
osulax New Member Shawn Join Date: Mar 2017 Posts: 2 Rep Power: 0	Hey Everyone! I just started using Star-CCM+ and I am trying to use it to predict the pressure and mass flow using only 3D data and impeller rotation speeds. Is this possible? How would I go about setting up the model? Setting the boundary conditions is really throwing me for a loop. The solution I thought of was a mass flow inlet and a pressure outlet and set them far enough away that I can measure the flow and pressure before the 0 conditions influence the flow too much. Not sure how that would turn out though. Any help or directions to instructions would be greatly appreciated!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem with chtMultiregionFoam radiation boundary condition	baran_foam	OpenFOAM Running, Solving & CFD	10	December 17, 2019 17:36
Simulation seems to converge but crashes suddenly	xxxx	OpenFOAM	16	September 12, 2014 08:07
Micro Scale Pore, icoFoam	gooya_kabir	OpenFOAM Running, Solving & CFD	2	November 2, 2013 13:58
calculation stops after few time steps	sivakumar	OpenFOAM Running, Solving & CFD	7	March 17, 2013 06:37
Orifice Plate with a fully developed flow - Problems with convergence	jonmec	OpenFOAM Running, Solving & CFD	3	July 28, 2011 05:24

June 4, 2017, 15:08		#2
ernarasimman Member cfd Engineer Join Date: Sep 2014 Location: Banaglore Posts: 30 Rep Power: 11	Normally for MRF based one total pressure inlet and static pressure outlet is enough .. because based on rotation speed will give massflux data...and increase speed step by step ...so nope in initial conditions Sent from my Lenovo A7020a48 using CFD Online Forum mobile app