Continuous Integration

The following regression tests are run every time a commit is pushed to the main MFIX-Exa repository on the NETL gitlab.

For each of the tests in the chart below, there are three directional variations; these are identified in the repository as, for example, FLD01-x, FLD01-y, and FLD01-z.

For each direction, where appropriate, there are multiple versions, with the following notations:

• SGS: single grid serial

• MGS: multiple grid serial

• TGS: tiled grid serial

• MGP: multiple grid parallel

Below Ng = number of grids, Npa = number of particles, Np = number of MPI ranks.

All the FLD cases are fluid-only and steady state. All the DEM cases are particle-only except for DEM06 and DEM07 which are fluid and particles; these both use the “BVK2” drag type. In all cases the particle data were read in from “particle_input.dat”

None of these tests have non-rectangular geometry.

“NSW” means “No Slip Wall” and “Per” is “periodic.” “MI/PO” refers to Mass Inflow at the low end of the domain and Pressure Outflow at the high end. “PI/PO” refers to Pressure Inflow at the low end of the domain and Pressure Outflow at the high end.

Additional detail about these problems is given in tests/README.md

Single-grid, single-process (SGS) particle-only tests:

Test	nx	ny	nz	bc_x	bc_y	bc_z	Npa	Description
DEM01	2	5	5	NSW	Per	Per	1	Freely falling particle with wall collision
DEM02	2	5	5	NSW	Per	Per	1	Multiple bounces with bounce height measured
DEM03	2	5	5	NSW	Per	Per	2	Two stacked compressed particles
DEM04	4	4	4	NSW	Per	Per	1	Single particle slipping on a rough surface
DEM05	5	2	5	Per	Per	Per	93	Oblique particle collisions

Steady-state fluid-only tests:

Test		nx	ny	nz	bc_x	bc_y	bc_z	Ng	Np
FLD01		8	8	4	Per	NSW	Per	Poiseuille flow
	SGS MGS MGP							1 4 4	1 1 8
FLD02		80	16	16	MI/PO	NSW	NSW	Couette flow
	SGS MGS MGP							1 40 40	1 1 8
FLD03		8	8	4	PI/PO	NSW	Per	Poiseuille flow
	SGS MGS MGP							1 4 4	1 1 8

Coupled particle/fluid tests:

Test		nx	ny	nz	bc_x	bc_y	bc_z	Npa	Ng	Np
DEM06		50	5	5	NSW	NSW	NSW	1	Single particle falling under gravity
	SGS MGS MGP								1 10 10	1 1 8
DEM07		20	20	20	Per	Per	Per	1222	Homogeneous cooling system
	SGS MGS MGP								1 8 8	1 1 8