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.
8.3.12.13. 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.