Publication Date:
2019-07-13
Description:
Performance and operability testing has been completed on a laboratory-scale, four-port wave rotor, of the type suitable for use as a topping cycle on a gas turbine engine. Many design aspects, and performance estimates for the wave rotor were determined using a time-accurate, one-dimensional, computational fluid dynamics-based simulation code developed specifically for wave rotors. The code follows a single rotor passage as it moves past the various ports, which in this reference frame become boundary conditions. This paper compares wave rotor performance predicted with the code to that measured during laboratory testing. Both on and off-design operating conditions were examined. Overall, the match between code and rig was found to be quite good. At operating points where there were disparities, the assumption of larger than expected internal leakage rates successfully realigned code predictions and laboratory measurements. Possible mechanisms for such leakage rates are discussed.
Keywords:
Fluid Mechanics and Thermodynamics
Type:
NASA/TM-2007-214985
,
ARL-TR-4202
,
AIAA Paper-2007-5049
,
E-16166
,
43rd AIAA Joint Propulsion Conference; Jul 08, 2007 - Jul 12, 2007; Cincinnati, OH; United States
Format:
application/pdf
