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Simulation of Secondary and Separated Flow in a Serpentine Diffuser (S-Duct) for Air Breathing Propulsion
Technical Paper
2013-01-2119
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The focus of this paper is on the numerical simulation of compressible flow in a diffusing S-duct inlet; this flow is characterized by secondary flow as well as regions of boundary layer separation. The S-Duct geometry produces streamline curvature and an adverse pressure gradient resulting in these flow characteristics. The geometry used in this investigation is based on a NASA Glenn Research Center experimental diffusing S-Duct which was studied in the early 1990's. The CFD flow solver ANSYS - Fluent is employed in the investigation of compressible flow through the S-duct. A second-order accurate, steady, density-based solver is employed in a finite-volume framework. The three-dimensional Reynolds-Averaged Navier-Stokes (RANS) equations are solved on a structured mesh with a number of turbulence models, namely the Spalart - Allmaras (SA), k-ε, k-ω SST, and Transition SST models, and the results are compared with the experimental data. The computed results capture the flow field and pressure recovery with acceptable accuracy when compared to the experimental data. The turbulence model giving the best results is identified.
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Citation
Fiola, C. and Agarwal, R., "Simulation of Secondary and Separated Flow in a Serpentine Diffuser (S-Duct) for Air Breathing Propulsion," SAE Technical Paper 2013-01-2119, 2013, https://doi.org/10.4271/2013-01-2119.Also In
References
- Wellborn , S.R. , Reichert , B.A , and Okiishi , T.H. An Experimental Investigation of the Flow in a Diffusing S-Duct AIAA Paper 92-3622, 28th Joint Propulsion Conference and Exhibit Nashville, TN 6 8 July 1992
- Wellborn , S.R. , Okiishi , T.H. , and Reichert , B.A A Study of Compressible Flow through a Diffusing S-Duct NASA Technical Memorandum 106411 December 1993
- Harloff , G.J. , Reichert , B.A. , and Wellborn , S.R Navier-Stokes Analysis and Experimental Data Comparison of Compressible Flow in a Diffusing S-Duct AIAA Paper 92-2699, AIAA 10 th Applied Aerodynamics Conference Exhibit Palo Alto, CA June 22 24 1992
- Vuillerme , A.L. , Deck , S. , and Chevrier , R. Numerical Simulation of the Flow Inside an S-Shaped Intake Diffuser European Conference for Aerospace Sciences Moscow, Russia July 4 7 2005
- Garnier , E. , Leplat , M. , Monnier , J.C. , and Delva , J. Flow Control by Pulsed Jet in a Highly Bended S-Duct AIAA Paper 2012-3250, AIAA 6th Flow Control Conference New Orleans, LA 25 28 June 2012
- ANSYS ICEM CFD 13: Geometry and Mesh Generation Preprocessor Ansys Inc. 2012
- ANSYS Fluent 13: Flow Modeling Software Ansys Inc. 2012