Effect of vane opening on aerodynamic performance of the ram-rotor test system

Abstract

In order to research the influence of adjustable vane on the aerodynamic performance of the ram-rotor test system, FLUENT software has been adopted to simulate the flow passage of the ram-rotor test system numerically. The vane opening is controlled by changing the stagger angle of the vane blades. Results show that flow uniformity of vane outlet is influenced by the vane openings, which has an impact on the aerodynamic loss to some extent. Total pressure ratio, adiabatic efficiency and mass flow rate can be regulated by different openings of the vane.Compared with -8° vane opening, top efficiency of the ram-rotor increases by about 13.8% at +6° opening. And total pressure ratio drops by 5.87%. The rising opening increases the relative Mach number at inlet of the ram-rotor and weakens the intensity of the tip clearance leakage, which comes to a decreasing aerodynamic loss.

Numerical investigation of strake profile and maximum thickness position in the ram-rotor

“…Han et al. 8 numerically studied the ram-rotor performance under the environment of the whole stage system. For single ram-rotor row, Han et al.…”

“…Steele et al 6 and Lawlor et al 7 investigated the potential prospect of shock compression technology. Han et al 8 numerically studied the ram-rotor performance under the environment of the whole stage system. For single ram-rotor row, Han et al [9][10][11] analyzed the detailed flow field in the ram-rotor and studied the influence of the tip clearance size and the leading edge sweeping on the performance of the ram-rotor.…”