
For streamwiseperiodic flows, the velocity field should be completely periodic. If a densitybased solver is used to compute the periodic flow, the pressure field reported will be the actual pressure (which is not periodic). If the pressurebased solver is used, the pressure field reported will be the periodic pressure field of Equation 9.43. Figure 9.4.5 displays the periodic pressure field in the geometry of Figure 9.4.1.
If you specified a mass flow rate and had FLUENT calculate the pressure gradient, you can check the pressure gradient in the streamwise direction ( ) by looking at the current value for Pressure Gradient in the Periodic Conditions panel.