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

Figure 16

The rotor one wake depicted by instantaneous entropy contours on the rotor two blade and a 40% span cut-plane (equivalent to 50% of the slot span). Red is high entropy, blue is low entropy.

(a) 𝑡=5.73×10⁻⁵ seconds

(b) 𝑡=9.54×10⁻⁵ seconds