Interfaces Discontinuity

earc96 · September 30, 2017, 19:26

Hi. I'm trying to solve a flapping wing using FLUENT but there's a problem I'm trying to solve for a week! I am using an interface to guarantee that there will not be a reduction in the mesh quality but the interface shows discontinuities in the velocity and pressure fields, as shown in the attached file. I personally think this happens due to mass flow conservation, but is there any way to fix this?

Thanks in advance,

Emanuel

earc96 · October 3, 2017, 15:44

Found a solution. Seems that the root's problem was the Transient Formulation. A second order implicit method was making the result unstable. I'm using now the first order implicit with a reduced time step.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Discontinuity across interfaces	Nurzhan	CFX	2	March 11, 2015 01:59
What type is defined as the interfaces between stator and stator on OF-2.1.1?	renyun0511	OpenFOAM Running, Solving & CFD	3	May 18, 2013 08:11
Discontinuity in interfaces	Lugarin	FLUENT	0	July 12, 2011 17:53
discontinuity of solution due to interfaces ?	T.D.	OpenFOAM Running, Solving & CFD	4	December 20, 2010 09:42
grid interfaces	kiko	FLUENT	0	February 13, 2007 10:28

October 3, 2017, 15:44		#2
earc96 New Member Emanuel Camacho Join Date: Jul 2017 Posts: 8 Rep Power: 9	Found a solution. Seems that the root's problem was the Transient Formulation. A second order implicit method was making the result unstable. I'm using now the first order implicit with a reduced time step.