NUMERICAL INVESTIGATION OF PRE-EVACUATION INFLUENCES OF SECOND THROAT EXHAUST DIFFUSER

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FOULADI N.; MOHAMMADI A.; REZAEI H.

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

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Paper Information

Journal: FLUID MECHANICS AND AERODYNAMICS JOURNAL Year:2017 | Volume:5 | Issue:2 Page(s): 55-69

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Title

NUMERICAL INVESTIGATION OF PRE-EVACUATION INFLUENCES OF SECOND THROAT EXHAUST DIFFUSER

Author(s)

FOULADI N. | MOHAMMADI A. | REZAEI H. | Issue Writer Certificate

Keywords

ALTITUDE TEST FACILITYQ1

SECOND THROAT EXHAUST DIFFUSERQ1

PRE-EVACUATIONQ1

CFDQ2

Abstract

In this paper, the influences of regional PRE-EVACUATION of an ALTITUDE TEST FACILITY on starting time of a second throat supersonic exhaust diffuser are numerically investigated. Detailed numerical studies have been carried out to evaluate the physics of the flow and starting time of the diffuser for different PRE-EVACUATION zones along the diffuser and the test chamber. Unsteady axisymmetric compressible Navier–Stokes equations, incorporated with the two equation kw-SST turbulence model are solved, with density-based solver to extract the current flow features. The numerical method is properly validated with the measured data available in the literature. Our investigations show that the amount of PRE-EVACUATION volume has strong effects on starting time of the diffuser. As we extend PRE-EVACUATION zone along the diffuser, the smaller starting time of diffuser is resulted. However, the increasing of pre-evacuated test chamber size causes the increasing of starting time of the diffuser.

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APA: Copy

FOULADI, N., MOHAMMADI, A., & REZAEI, H.. (2017). NUMERICAL INVESTIGATION OF PRE-EVACUATION INFLUENCES OF SECOND THROAT EXHAUST DIFFUSER. FLUID MECHANICS AND AERODYNAMICS JOURNAL, 5(2 ), 55-69. SID. https://sid.ir/paper/245528/en

Vancouver: Copy

FOULADI N., MOHAMMADI A., REZAEI H.. NUMERICAL INVESTIGATION OF PRE-EVACUATION INFLUENCES OF SECOND THROAT EXHAUST DIFFUSER. FLUID MECHANICS AND AERODYNAMICS JOURNAL[Internet]. 2017;5(2 ):55-69. Available from: https://sid.ir/paper/245528/en

IEEE: Copy

N. FOULADI, A. MOHAMMADI, and H. REZAEI, “NUMERICAL INVESTIGATION OF PRE-EVACUATION INFLUENCES OF SECOND THROAT EXHAUST DIFFUSER,” FLUID MECHANICS AND AERODYNAMICS JOURNAL, vol. 5, no. 2 , pp. 55–69, 2017, [Online]. Available: https://sid.ir/paper/245528/en

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