Monitor data for head discharge curve

FCTCD · December 21, 2018, 07:18

Hi everyone,

I am simulating a centrifugal pump with Fluent and I have a question on which monitor I should set to build the numerical head-discharge curve and compare it with experimental data.

Because I want to get the point at 10.8 m and 55 l/s I set my BC to total pressure inlet 105757 Pa (10.8 m) and gauge pressure outlet 0 Pa and target mass flow rate 55 kg/s. Is this correct?
Also, since I have set the problem in this way (I think is over constrained), what should I read as output to compute the head-discharge curve?

Thanks in advance for your answers

LuckyTran · December 21, 2018, 11:09

It's not really overcontrained, but no one ever reports all the info in a pump/fan curve because they always assume certain conditions. I.e. 55 l/s is stated but no information is ever given about the pressure & temperature of the incoming fluid.

Either you set the pressure head and record the mass flow that you achieve. Or you set the inlet pressure and target mass flow rate and record the pressure head that you achieve.

December 21, 2018, 07:18	Monitor data for head discharge curve	#1
FCTCD New Member Federico Join Date: Jan 2017 Posts: 11 Rep Power: 9	Hi everyone, I am simulating a centrifugal pump with Fluent and I have a question on which monitor I should set to build the numerical head-discharge curve and compare it with experimental data. Because I want to get the point at 10.8 m and 55 l/s I set my BC to total pressure inlet 105757 Pa (10.8 m) and gauge pressure outlet 0 Pa and target mass flow rate 55 kg/s. Is this correct? Also, since I have set the problem in this way (I think is over constrained), what should I read as output to compute the head-discharge curve? Thanks in advance for your answers

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
[ICEM] Problems with coedge curves and surfaces	tommymoose	ANSYS Meshing & Geometry	6	December 1, 2020 11:12
[Gmsh] Vertex numbering is dense	KateEisenhower	OpenFOAM Meshing & Mesh Conversion	7	August 3, 2015 10:49
meshing of a compound volume in GMSH	shawn3531	OpenFOAM	4	March 12, 2015 10:45
How did I set a discharge or depth curve at inflow boundary? (open channel problem)	Andy Chen	FLUENT	0	June 29, 2009 10:11
CFX4.3 -build analysis form	Chie Min	CFX	5	July 12, 2001 23:19

December 21, 2018, 11:09		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,674 Rep Power: 66	It's not really overcontrained, but no one ever reports all the info in a pump/fan curve because they always assume certain conditions. I.e. 55 l/s is stated but no information is ever given about the pressure & temperature of the incoming fluid. Either you set the pressure head and record the mass flow that you achieve. Or you set the inlet pressure and target mass flow rate and record the pressure head that you achieve.