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Edward M. Greitzer and Choon S. Tan. Kerner, Jonathan (Jonathan H.) Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics 2010-08-31T16:20:42Z 2010-08-31T16:20:42Z 2010 2010 http://hdl.handle.net/1721.1/57882 639240558 Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2010. Cataloged from PDF version of thesis. Includes bibliographical references (p. 71-72). This thesis examines an axial compressor body force representation constructed from 3D CFD calculations. The radial distribution of body forces is compared to that of a body force representation based on axisymmetric streamline curvature (SLC) calculations, and shown to be in qualitative agreement except in the vicinity of the blade tip. In terms of stall inception type and stall point, computations based on both representations exhibit agreement with rig test data. A parametric study is undertaken in which the magnitude of the forces in the blade tip region of both representations is reduced so as to obtain reductions in compressor pressure rise similar to those observed experimentally due to increased tip clearance. It is shown that on a back-to-back basis, a given change to the end wall forces produces similar effects on the computed stall point, whether the underlying body force representation derives from 3D CFD or SLC. Based on this result one route to capturing effects of tip clearance on stall prediction can be the development of a tip clearance body force model for use in conjunction with SLC calculations. by Jonathan Kerner. S.M. 72 p. eng Massachusetts Institute of Technology M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 Aeronautics and Astronautics. An assessment of body force representations for compressor stall simulation Thesis application/pdf false Publication unknown unknown <Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="05bfb322-f500-4f43-8afd-17bcb20fdc4f"> <Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type> <Language>eng</Language> <Title>An assessment of body force representations for compressor stall simulation</Title> <PublishedIn> <Publication> </Publication> </PublishedIn> <PublicationDate>2010</PublicationDate> <Authors> <Author> <DisplayName>Kerner, Jonathan (Jonathan H.)</DisplayName> <Affiliation> <OrgUnit> </OrgUnit> </Affiliation> </Author> </Authors> <Editors> </Editors> <Publishers> <Publisher> <DisplayName>Massachusetts Institute of Technology</DisplayName> <OrgUnit /> </Publisher> </Publishers> <License>http://dspace.mit.edu/handle/1721.1/7582</License> <Keyword>Aeronautics and Astronautics.</Keyword> <Abstract>This thesis examines an axial compressor body force representation constructed from 3D CFD calculations. The radial distribution of body forces is compared to that of a body force representation based on axisymmetric streamline curvature (SLC) calculations, and shown to be in qualitative agreement except in the vicinity of the blade tip. In terms of stall inception type and stall point, computations based on both representations exhibit agreement with rig test data. A parametric study is undertaken in which the magnitude of the forces in the blade tip region of both representations is reduced so as to obtain reductions in compressor pressure rise similar to those observed experimentally due to increased tip clearance. It is shown that on a back-to-back basis, a given change to the end wall forces produces similar effects on the computed stall point, whether the underlying body force representation derives from 3D CFD or SLC. Based on this result one route to capturing effects of tip clearance on stall prediction can be the development of a tip clearance body force model for use in conjunction with SLC calculations.</Abstract> <Access xmlns="http://purl.org/coar/access_right" > </Access> </Publication>