
[Sponsors] 
October 13, 2013, 20:50 
what does this mean? \nabla ^3U

#1 
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Torino, Italy
Posts: 747
Rep Power: 9 

October 16, 2013, 13:37 

#2 
Senior Member
Reza
Join Date: Mar 2009
Location: Appleton, WI
Posts: 116
Rep Power: 9 
Last edited by triple_r; October 16, 2013 at 13:37. Reason: formatting the equation correctly 

October 16, 2013, 20:20 

#3 
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Torino, Italy
Posts: 747
Rep Power: 9 
Thanks,
You mean its a scalar rite? Actually its a simple version of the regular one. Its an equation of a turbulence model. "Partialaveragebased equations of incompressible turbulent flow" I attach a image. This equation is tough to handle. Right now I have no idea how to solve this equation. 

October 17, 2013, 09:15 

#4 
Senior Member
Jonas T. Holdeman, Jr.
Join Date: Mar 2009
Location: Knoxville, Tennessee
Posts: 109
Rep Power: 10 

October 17, 2013, 11:09 

#5  
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 2,778
Rep Power: 33 
Quote:
I think is a simbolic power of the operator l.Grad therefore it must be applied n times on the function 

October 18, 2013, 10:30 

#6 
Senior Member
Reza
Join Date: Mar 2009
Location: Appleton, WI
Posts: 116
Rep Power: 9 

Thread Tools  
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
libOpenSMOKE  Tobi  OpenFOAM Programming & Development  510  January 13, 2017 08:45 
InterFoam: Add an equation to only one phase  voingiappone  OpenFOAM Programming & Development  36  July 30, 2016 20:39 
Equilibrium thru Interface  hfsf  OpenFOAM Running, Solving & CFD  10  June 14, 2016 10:14 
modelling Differential equations in a udf  RikardMNorén  Fluent UDF and Scheme Programming  2  October 1, 2013 03:36 
Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)  nikwin  OpenFOAM  10  August 14, 2009 04:19 