0002699: Eulerian multiphase, faceMomentum: fvOption rho sources are neglected in momentum equations

ID	Project	Category	View Status	Date Submitted	Last Update

0002699	OpenFOAM	Bug	public	2017-09-15 07:35	2017-09-15 11:44

Reporter	Juho	Assigned To	henry
Priority	normal	Severity	major	Reproducibility	always
Status	resolved	Resolution	fixed
Platform	Unix	OS	Other	OS Version	(please specify)
Product Version	dev

Summary	0002699: Eulerian multiphase, faceMomentum: fvOption rho sources are neglected in momentum equations
Description	faceMomentum formulation does account for fvOption rho sources in the momentum equation, which produces erroneous velocity fields when such sources are present.
Steps To Reproduce	I've attached a reactingTwoPhaseEulerFoam test case where water is injected in to a vessel filled with air. The expected water injection velocity is 1 m/s. If you run it with faceMomentum on and off the the results will show: faceMomentum off: 1 m/s as expected facemomentum on: 167 m/s I've also attached a modified UEqns.H that includes the rho fvOption term. With this modification the "facemomentum on" also produces the expected 1 m/s injection velocity.
Additional Information	The same issue applies to the twoPhaseEulerFoam faceMomentum formulation.
Tags	No tags attached.

Juho 2017-09-15 07:35 reporter	waterInjection.tar.gz (3,516 bytes)

Juho 2017-09-15 07:36 reporter	cellMomentum.png (8,622 bytes) cellMomentum.png (8,622 bytes)

Juho 2017-09-15 07:36 reporter	faceMomentum.png (9,215 bytes) faceMomentum.png (9,215 bytes)

Juho 2017-09-15 07:36 reporter	faceMomentum_modified.png (9,364 bytes) faceMomentum_modified.png (9,364 bytes)

Juho 2017-09-15 07:36 reporter	UEqns.H (1,647 bytes)

henry 2017-09-15 11:44 manager ~0008779	Thanks Juho Resolved in OpenFOAM-5.x by commit db90699cffd3626d65945c6dbf2e4211ff2a8485 Resolved in OpenFOAM-dev by commit adb66dd625124c4265038a337d64cf5a4617efe0

Date Modified	Username	Field	Change
2017-09-15 07:35	Juho	New Issue
2017-09-15 07:35	Juho	File Added: waterInjection.tar.gz
2017-09-15 07:36	Juho	File Added: cellMomentum.png
2017-09-15 07:36	Juho	File Added: faceMomentum.png
2017-09-15 07:36	Juho	File Added: faceMomentum_modified.png
2017-09-15 07:36	Juho	File Added: UEqns.H
2017-09-15 11:44	henry	Assigned To	=> henry
2017-09-15 11:44	henry	Status	new => resolved
2017-09-15 11:44	henry	Resolution	open => fixed
2017-09-15 11:44	henry	Fixed in Version	=> 5.x
2017-09-15 11:44	henry	Note Added: 0008779