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http://dx.doi.org/10.5293/KFMA.2004.7.4.040

Numerical Studies on the S-Shaped Duct Flow for Compressors  

Choi, Chang-Ho (한국항공우주연구원 터보펌프개발그룹)
Noh, Jun-Gu (한국항공우주연구원 터보펌프개발그룹)
Kim, Jin-Han (한국항공우주연구원 터보펌프개발그룹)
Publication Information
The KSFM Journal of Fluid Machinery / v.7, no.4, 2004 , pp. 40-46 More about this Journal
Abstract
This paper is concerned with the numerical analyses of an S-shaped duct for the inter-channel between compressor spools. For the compactness and lightweight of an engine, the length of the S-shaped duct is desired to be minimized. Shortening the S-shaped duct, however, flow separation is likely to occur. Numerical investigation using a three-dimensional Navier-Stokes flow solver was performed to determine the availability of the minimization of an S-shaped duct. Computations were performed introducing the experimental data as the inlet flow condition of the OGV in determining the minimum length of the S-shaped duct. Also, the leaning effect of the OGV which assists the flow to turn radially inward was studied adopting mixing-plane method to consider the rotor/OGV interaction.
Keywords
Numerical analysis; S-shaped duct; Compressor; OGV;
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