NUMERICAL COMPARISON OF MECHANICAL VANES AND BLOWING JET FLOW CONTROL EFFECTS IN A DIFFUSING CURVED DUCT

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MAGHSOUDI I.; VAZIRI M.A.; MAHMOODI M.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Paper Information

Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2017 | Volume:7 | Issue:1 Page(s): 231-254

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Title

NUMERICAL COMPARISON OF MECHANICAL VANES AND BLOWING JET FLOW CONTROL EFFECTS IN A DIFFUSING CURVED DUCT

Author(s)

MAGHSOUDI I. | VAZIRI M.A. | MAHMOODI M. | Issue Writer Certificate

Keywords

CURVED INLETQ1

PRESSURE RECOVERYQ1

DISTORTION COEFFICIENTQ1

SECONDARY FLOWQ1

VORTEX GENERATORQ1

Abstract

In this research, comparative numerical investigation of flow behavior of curved diffuser in three cases of bare duct, duct with mechanical VORTEX GENERATORs and duct with microjet actuators is done. Prediction of five turbulence models of SP-AL, K-e-RNG, Transition-SST, RSM-Stress-Omega and RSM-LPS are compared with experimental results. Curvature of flow streamlines and vortex core flow in separation region are well predicted by the RSM-St-Om model. Comparison of total pressure ratio contours shows that SP-AL, Transition-SST and RSM St-Om models have more similarity with experimental test data contours at aerodynamic interface plane (AIP). Comparison of walls pressure ratio of bare duct and duct with microjet actuators with experimental data shows that because of the presence of separation, onset and end points of separation bubble and length of separation region are well predicted by RSM-St-Om model. Because of elimination of separation phenomena in case of duct with mechanical VORTEX GENERATORs, advantage of RSM-St-Om model is decreased and almost all turbulence models have similar pressure ratio results.

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APA: Copy

MAGHSOUDI, I., VAZIRI, M.A., & MAHMOODI, M.. (2017). NUMERICAL COMPARISON OF MECHANICAL VANES AND BLOWING JET FLOW CONTROL EFFECTS IN A DIFFUSING CURVED DUCT. JOURNAL OF SOLID AND FLUID MECHANICS, 7(1 ), 231-254. SID. https://sid.ir/paper/212721/en

Vancouver: Copy

MAGHSOUDI I., VAZIRI M.A., MAHMOODI M.. NUMERICAL COMPARISON OF MECHANICAL VANES AND BLOWING JET FLOW CONTROL EFFECTS IN A DIFFUSING CURVED DUCT. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2017;7(1 ):231-254. Available from: https://sid.ir/paper/212721/en

IEEE: Copy

I. MAGHSOUDI, M.A. VAZIRI, and M. MAHMOODI, “NUMERICAL COMPARISON OF MECHANICAL VANES AND BLOWING JET FLOW CONTROL EFFECTS IN A DIFFUSING CURVED DUCT,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 7, no. 1 , pp. 231–254, 2017, [Online]. Available: https://sid.ir/paper/212721/en

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