Detailed Unsteady Simulation of a Counterrotating Aspirated Compressor with a Focus on the Aspiration Slot and Plenum

Table 4

Experiment and simulation pressure ratio, temperature ratio, adiabatic efficiency, and mass flow. MIT experiment mass flow comes from an average across the three windows at the inlet.

Aspiration	𝑁harm	Thermal BC	PR	TR	𝜂 (%)	PRAA	TRAA	𝜂AA (%)	𝑚̇inlet kg/s
No	3	Adiabatic	2.889	1.438	80.0	2.884	1.437	80.2	23.86
Yes			2.887	1.417	84.2	2.895	1.417	84.6	24.63
Yes	2	Isothermal	2.887	1.390	90.2	2.899	1.395	89.6	24.88
MIT experiment			—	—	—	2.934	1.411	87.9	24.40