NUMERICAL STUDY OF SHOCK-BOUNDARY LAYER INTERACTION ON AN AIRFOIL WITH CAVITY AND POROUS SURFACE: PASSIVE CONTROL AND PARAMETRIC INVESTIGATION IN A TRANSONIC FLOW

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YADEGARI M.; SHAMS TALEGHANI A.

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Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2016 | Volume:6 | Issue:2 Page(s): 271-284

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Title

NUMERICAL STUDY OF SHOCK-BOUNDARY LAYER INTERACTION ON AN AIRFOIL WITH CAVITY AND POROUS SURFACE: PASSIVE CONTROL AND PARAMETRIC INVESTIGATION IN A TRANSONIC FLOW

Author(s)

YADEGARI M. | SHAMS TALEGHANI A. | Issue Writer Certificate

Keywords

FLOW CONTROLQ1

SHOCK CONTROLQ2

SHOCK-BOUNDARY LAYER INTERACTIONQ2

PARAMETRIC STUDYQ1

Abstract

This paper studies numerically the problem of FLOW CONTROL on NACA0012 airfoil with porous surface in transonic flow. The flow is assumed turbulent and stationary. Results show that the normal shock intensity on airfoil surface is weak and consequently, the drag coefficient decrease 21 percent. This passive method also postpones the separation point. The penalty of this inappropriate effects reduction is lift reduction. The effects of this FLOW CONTROL method on lift and drag coefficients are investigated in this paper via geometric modeling of the porous surface. The efficiency of this method depends on various factors like as geometric parameters. For this purpose, we investigate the effects of cavity depth, cavity location, cavity length, number of porous surface holes and cavity shape in this PARAMETRIC STUDY. Finally the results of the PARAMETRIC STUDY show the optimum of cavity depth is 0.7 of the airfoil thickness, the optimum location of cavity is then 75% of the cavity length is located in upper side of shock wave, and the optimum length of cavity is 0.2 of chord. Study of geometric shapes of different cavities shows that optimum shape of cavity is ramp.

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APA: Copy

YADEGARI, M., & SHAMS TALEGHANI, A.. (2016). NUMERICAL STUDY OF SHOCK-BOUNDARY LAYER INTERACTION ON AN AIRFOIL WITH CAVITY AND POROUS SURFACE: PASSIVE CONTROL AND PARAMETRIC INVESTIGATION IN A TRANSONIC FLOW. JOURNAL OF SOLID AND FLUID MECHANICS, 6(2), 271-284. SID. https://sid.ir/paper/212683/en

Vancouver: Copy

YADEGARI M., SHAMS TALEGHANI A.. NUMERICAL STUDY OF SHOCK-BOUNDARY LAYER INTERACTION ON AN AIRFOIL WITH CAVITY AND POROUS SURFACE: PASSIVE CONTROL AND PARAMETRIC INVESTIGATION IN A TRANSONIC FLOW. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2016;6(2):271-284. Available from: https://sid.ir/paper/212683/en

IEEE: Copy

M. YADEGARI, and A. SHAMS TALEGHANI, “NUMERICAL STUDY OF SHOCK-BOUNDARY LAYER INTERACTION ON AN AIRFOIL WITH CAVITY AND POROUS SURFACE: PASSIVE CONTROL AND PARAMETRIC INVESTIGATION IN A TRANSONIC FLOW,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 6, no. 2, pp. 271–284, 2016, [Online]. Available: https://sid.ir/paper/212683/en

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