Step 5: Boundary Conditions

Boundary Conditions

1.   Set the boundary conditions for pressure-far-field-1.

Boundary Conditions pressure-far-field-1 Edit...

(a)   Retain the default value of 0 Pa for Gauge Pressure.

(b)   Enter 0.8 for Mach Number.

(c)   Enter 0.997564 and 0.069756 for the X-Component of Flow Direction and Y-Component of Flow Direction, respectively.

  These values are determined by the $4^{\circ}$ angle of attack: $\cos 4^{\circ} \approx 0.997564$ and $\sin 4^{\circ} \approx 0.069756$.

(d)   Select Turbulent Viscosity Ratio from the Specification Method drop-down list in the Turbulence group box.

(e)   Retain the default value of 10 for Turbulent Viscosity Ratio.

  The viscosity ratio should be between 1 and 10 for external flows.

(f)   Click the Thermal tab and retain the default value of 300 K for Temperature.

(g)   Click OK to close the Pressure Far-Field dialog box.