圧縮機直線翼列流路の三次元粘性流れ解析

概要

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With the rapid progress of technology in supercomputers and numerical analysis, it became possible to apply these technologies to complex flow phenomena in turbomachinery not only for research but also as design tools in industries. To catch up with this trend, we have developed a 3-dimensional NS (Navier-Stokes) numerical analysis cord for turbomachinery based on the outer flow cord for aircrafts (the Reynolds averaged Navier-Stokes equations are solved using an implicit finite-volume TVD upwind scheme with a 2-equation turbulence model). Verification by experiment is indispensable for all numerical cords, but there are not sufficient reliable experimental data, especially for the 3-dimensional case. So, we first conducted 2-dimensional compressor cascade tests with solid side walls, measured their 3-dimensional flow patterns, then compared 3-dimensional viscous flow analysis with the test data. The computed results show good agreement with experimental data, such as blade surface static pressure distribution, total pressure loss distribution at outlet of cascade, and pitchwise-averaged exit flow angle distribution under design conditions. As for higher inlet Mach number conditions, computed results show good agreement with experimental data qualitatively, but a slight quantitative discrepancy remains.
一般社団法人日本機械学会の論文
1993-05-25