8.3.12. Point Source

Point sources (PS) are used in place of mass inlets where either the geometry and/or grid resolution prohibit proper boundary condition specification. For example, a point source may be used to model an injector with dimensions smaller than the grid. Point sources may be defined within a single computational cell, along a plane, or as a volume of computational cells.

Point sources introduce mass directly into a computational cell unlike a boundary condition which specifies flow along a cell face. One consequence of this implementation is that point sources are subjected to convection/diffusion forces and may not travel parallel to the specified directional preference. Directional preference is specified with a velocity vector (i.e., PS_U_g, PS_V_g, etc.), however, directional preference is not required.

Examples showing how to setup point sources can be found in: legacy_tutorials/point_source_spiral

8.3.12.1. PS_X_W(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

X coordinate of the west face or edge.

8.3.12.2. PS_X_E(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

X coordinate of the east face or edge.

8.3.12.3. PS_Y_S(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Y coordinate of the south face or edge.

8.3.12.4. PS_Y_N(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Y coordinate of the north face or edge.

8.3.12.5. PS_Z_B(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Z coordinate of the bottom face or edge.

8.3.12.6. PS_Z_T(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Z coordinate of the top face or edge.

8.3.12.7. PS_I_W(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

I index of the west-most cell.

8.3.12.8. PS_I_E(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

I index of the east-most cell.

8.3.12.9. PS_J_S(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

J index of the south-most cell.

8.3.12.10. PS_J_N(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

J index of the north-most cell.

8.3.12.11. PS_K_B(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

K index of the bottom-most cell.

8.3.12.12. PS_K_T(PS)

Data Type: INTEGER

  • \(1 \le PS \le 5000\)

K index of the top-most cell.

8.3.12.13. PS_U_G(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

X-component of incoming gas velocity.

8.3.12.14. PS_V_G(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Y-component of incoming gas velocity.

8.3.12.15. PS_W_G(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Z-component of incoming gas velocity.

8.3.12.16. PS_MASSFLOW_G(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Gas mass flow rate through the point source.

8.3.12.17. PS_T_G(PS)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

Temperature of incoming gas.

8.3.12.18. PS_X_G(PS, SPECIES)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Species \le 100\)

Gas phase incoming species n mass fraction.

8.3.12.19. PS_U_S(PS, PHASE)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

X-component of incoming solids velocity.

8.3.12.20. PS_V_S(PS, PHASE)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

Y-component of incoming solids velocity.

8.3.12.21. PS_W_S(PS, PHASE)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

Z-component of incoming solids velocity.

8.3.12.22. PS_MASSFLOW_S(PS, PHASE)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

Solids mass flow rate through the point source.

8.3.12.23. PS_T_S(PS, PHASE)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

Temperature of incoming solids.

8.3.12.24. PS_X_S(PS, PHASE, SPECIES)

Data Type: DOUBLE PRECISION

  • \(1 \le PS \le 5000\)

  • \(1 \le Phase \le 10\)

  • \(1 \le Species \le 100\)

Solids phase incoming species n mass fraction.