
Math General Math Forum  For general math related discussion and news 
 LinkBack  Thread Tools  Display Modes 
August 1st, 2017, 04:37 AM  #1 
Newbie Joined: Jul 2017 From: Iraq Posts: 8 Thanks: 0  Inner Boundary Condition
Q:/ What is the reason for letting the inner boundary condition = (1) when solving the radial flow of infinite form of diffusivity equation, and I would like to know what would happen if I didn't equate it with (1). As in the attached pic: https://i.imgur.com/AVesmHM.png and here is the original pdf if you want: http://www.pe.tamu.edu/blasingame/da..._DimLssVar.pdf Last edited by skipjack; August 1st, 2017 at 03:16 PM. 
August 1st, 2017, 08:22 AM  #2 
Senior Member Joined: Jun 2015 From: England Posts: 643 Thanks: 184 
I think you will find that the 1 refers to a sink, where the flow is leaving the plane of section

August 1st, 2017, 01:40 PM  #3 
Newbie Joined: Jul 2017 From: Iraq Posts: 8 Thanks: 0  Thanks, but I don't think the (1) refers to sink term; I think it is more related to mathematical convenience, but I don't know the exact/detailed explanation of it.
Last edited by skipjack; August 1st, 2017 at 03:17 PM. 

Tags 
boundary, condition 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Help with boundary conditions  Bl1nkPT  Math  3  July 19th, 2017 10:40 AM 
PDE with variable boundary condition  captaincook  Calculus  0  December 21st, 2012 08:52 AM 
Boundary work  jakeward123  Physics  1  April 5th, 2011 08:22 AM 
boundary points  casablancahp  Applied Math  3  March 9th, 2011 05:32 AM 
Sequence boundary  nienawiedzony  Real Analysis  24  May 9th, 2010 03:40 AM 