Effect of Varying Diffuser vane height on CC3 NASA 4:1 Centrifugal Stage Performance
2022-26-1210
05/26/2022
- Event
- Content
- This work is aimed at conducting a computational study to find out the effect of vane less space downstream of the Diffuser vane trailing edge, by varying the height of diffuser vane viz. 50%, 75% and 100% diffuser height, on centrifugal stage performance. The considered centrifugal compressor stage in this study is CC3 NASA 4:1 centrifugal stage. In all the cases diffuser leading edge radius is same. The compressor performance with full diffuser vane configuration (100% diffuser height) is computed and initially compared with test data. The diffuser vane height is then reduced to 50% and 75% of the original length from diffuser leading edge. Hence, the diffuser leading edge location remains same as original 100% diffuser vane height geometry whereas location of trailing edge changes according to vane height. Another part of study is to model 100% diffuser vane height with hub and shroud gaps respectively. The computational study is carried out using CFX v19.1. The paper presents performance comparisons viz. speed line and 2D pitch averaged profile data of different variables for the above discussed five configurations.
- Citation
- Kumar, S., Chougule, H., Abdullah, Q., and Goswami, S., "Effect of Varying Diffuser vane height on CC3 NASA 4:1 Centrifugal Stage Performance," SAE Technical Paper 2022-26-1210, 2022, .