0003444: Identification of the porous region in powerLawLopesdaCosta porosity model

ID	Project	Category	View Status	Date Submitted	Last Update

0003444	OpenFOAM	Feature	public	2020-02-07 06:34	2020-02-09 18:58

Reporter	tnnandi	Assigned To	henry
Priority	none	Severity	feature	Reproducibility	always
Status	closed	Resolution	no change required
Platform	GNU/Linux	OS	Ubuntu	OS Version	15.04

Summary	0003444: Identification of the porous region in powerLawLopesdaCosta porosity model
Description	The standard porosity models implemented in OpenFOAM, e.g DarcyForchheimer and powerLaw, identify the regions in the computational domain where the body force term has to be added using the cellZone supplied by the user. This offers a very convenient way to prescribe the porous regions in the domain. But, in the newly added "powerLawLopesdaCosta porosity model", instead of utilizing user-prescribed cellZones, the model explicitly identifies the cells in the porous region using a convoluted process (using information from surface files representing the top and bottom regions of the porous region, and generating cellZone while running the model). I'm not sure why this length process has been pursued for the powerLawLopesdaCosta porosity model, but there should be an option to simply use cellZones to prescribe the porous regions.
Tags	No tags attached.

tnnandi 2020-02-07 06:37 reporter ~0011140	Maybe, there's an option to not create a new cellZone if there's already an existing one (created by the user manually, corresponding to the else branch of if (zoneId == -1), but it still requires surface files corresponding to the top and bottom of the porous regions to run the model.

tnnandi 2020-02-07 06:42 reporter ~0011141	Is the lengthy process only to allow the porosity surface area per unit volume parameter (Sigma) to be a function of height?

henry 2020-02-07 08:42 manager ~0011143	The handling of the porous region in the powerLawLopesdaCosta was specified in detail by the company funding the implementation. We could extend this model to handle alternative porosity specification if you would be interested in funding the work.

henry 2020-02-09 18:58 manager ~0011165	Pending funding.

Date Modified	Username	Field	Change
2020-02-07 06:34	tnnandi	New Issue
2020-02-07 06:37	tnnandi	Note Added: 0011140
2020-02-07 06:42	tnnandi	Note Added: 0011141
2020-02-07 08:42	henry	Note Added: 0011143
2020-02-07 08:43	henry	Priority	high => none
2020-02-07 08:43	henry	Severity	major => feature
2020-02-09 18:58	henry	Assigned To	=> henry
2020-02-09 18:58	henry	Status	new => closed
2020-02-09 18:58	henry	Resolution	open => no change required
2020-02-09 18:58	henry	Note Added: 0011165