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Accession Number:
ADA114850
Title:
Effect of Water on Axial Flow Compressors. Part I. Analysis and Predictions.
Descriptive Note:
Final rept. 15 Dec 77-30 Sep 80,
Corporate Author:
PURDUE UNIV LAFAYETTE IN SCHOOL OF MECHANICAL ENGINEERING
Report Date:
1981-06-01
Pagination or Media Count:
344.0
Abstract:
The subject of air-water mixture flow in axial compressors of jet engines is of practical interest in two contexts of water ingestion during take-off from rough runways with puddles of water and during flight through rain storms. The change in the compressor performance in turn produces changes in the performance of other components and of the engine as a whole. During the current investigation, i an analysis of the effects of water ingestion into a compressor has been carried out leading to the development of a predictive code, the PURDU-WICSTK program and ii a series of tests have been carried out on a small test compressor with mixtures of gases containing methane gas to simulate steam and with air-water droplet mixtures. The experimental results have been compared with predictions, It is concluded that the basic effects of water ingestion into compressors arise through 2 blockage, b distortion and c heat and mass transfer processes, the changes in blade aerodynamic performance being relatively small. In the case of a compressor of small mass flow and pressure ratio and high operating speed, increased quantities of water ingestion give rise to large quantities of water in the tip region.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
