WENO scheme validation - rhoCentralFoam - shockTube/Shu-Osher problems -- CFD Online Discussion Forums

June 12, 2017, 09:23

WENO scheme validation - rhoCentralFoam - shockTube/Shu-Osher problems

usv001

Senior Member

Join Date: Sep 2015

Location: Singapore

Posts: 102

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Dear all,

I have implemented an n-th order WENO scheme in OpenFOAM and modified the rhoCentralFoam solver (with TVD 3rd order RK time marching).

I have simulated both the shockTube and the Shu-Osher problems. The solution for the shockTube problem looks fine for both the 5th and 7th order WENO schemes. However, small wiggles occur near the small shocklets for the Shu-Osher problem. So far, I have not seen anybody reporting about this problem. I have no idea why this is happening.

Has anyone faced this problem or something similar to this when implementing WENO schemes?

With many thanks,
USV

Attached Images

	shockTube-WENO5.png (24.3 KB, 139 views)
	shockTube-WENO7.png (24.0 KB, 119 views)
	shuOsher-WENO5.png (32.8 KB, 119 views)
	shuOsher-WENO7.png (32.0 KB, 118 views)

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