CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Negative energy loss in cardiovascular flow simulation

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   November 26, 2015, 12:13
Default Negative energy loss in cardiovascular flow simulation
New Member
Join Date: Nov 2015
Posts: 1
Rep Power: 0 is on a distinguished road
Hello all.
I am trying to simulate flow in an idealized model of Total Cavopulmonary Connection(TCPC).Simulations are run in FLUENT.
As boundary conditions,two sinusoidal time varying flows are imposed as velocity-inlet, and outflow is applied at outlets.
For calculation of energy loss,the simplified control volume approach is used.

Energy loss=\Sigma_{inlet}\Bigg(\Big(P_{static}+\frac{1}{2}*\rho* (\frac{Q}{A})^{2} \Big)*Q \Bigg) - \Sigma_{outlet}\Bigg(\Big(P_{static}+\frac{1}{2}*\rho* (\frac{Q}{A})^{2} \Big)*Q \Bigg)

Now part of the cycle shows negative energy loss .Does this indicate that there are some errors in the setup, or the absolute value of the quantity is to be considered.The average energy loss is positive though.

Thanks in advance. is offline   Reply With Quote


cardiovascular flow, energy loss

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Flow rate restriction simulation set-up siw CFX 4 February 16, 2016 13:15
Coupling of drying process and flow simulation franzdrs Main CFD Forum 0 April 29, 2013 14:11
parallel code samiam1000 SU2 3 March 25, 2013 05:55
channelFoam for a 3D pipe AlmostSurelyRob OpenFOAM 3 June 24, 2011 13:06
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 15:45

All times are GMT -4. The time now is 17:14.