Multicomponent Mixing using a Nozzle: Exercise 5—Assigning Boundary Conditions
For boundary conditions, the fluid behavior and properties are specified at all bounding surfaces of the fluid domain.
Specifying Inlet Boundary Conditions
1. Under Boundary Conditions, select Fuelpipe_Inlet.
a. In the Model tab, for Flow, select the following values for the options listed:
▪ Flow — Specified Volumetric Flux
▪ Value — 0.003
b. In the Model tab, for Multicomponent Mixing, select the following values for the options listed:
▪ Component CH4 — Specified Value
▪ Value — 0.99
▪ Component O2 — Specified Value
▪ Value — 0.01
2. Under Boundary Conditions, select Nozzle_Inlet.
a. In the Model tab, for Flow, select the following values for the options listed:
▪ Flow — Specified Volumetric Flux
▪ Value — 0.007
b. In the Model tab, for Multicomponent Mixing, select the following values for the options listed:
▪ Component CH4 — Specified Value
▪ Value — 0.01
▪ Component O2 — Specified Value
▪ Value — 0.99
c. In the Model tab, for Heat, set Temperature to 350 K.
3. Under Boundary Conditions, select Nozzle_Side_Inlet.
a. In the Model tab, for Flow, select the following values for the options listed:
▪ Flow — Specified Volumetric Flux
▪ Value — 0.005
b. In the Model tab, for Multicomponent Mixing, select the following values for the options listed:
▪ Component O2 — Specified Value
▪ Value — 0.1
▪ Component H2O — Specified Value
▪ Value — 0.9
Specifying Outlet Boundary Conditions
1. Under Boundary Conditions, select Nozzle_Outlet.
a. In the Model tab, for Flow, select the following values for the options listed:
▪ Flow — Specified Pressure Outlet
▪ Pressure — 0 Pa
b. In the Model tab, for Multicomponent Mixing, select the following values for the options listed:
▪ Component CH4 — Outlet
▪ Value — 0.01
▪ Component O2 — Outlet
▪ Value — 0.9
▪ Component H2O — Outlet
▪ Value — 0.09