Computation of transonic flows with shock-induced separation using algebraic turbulence models

Chakrabartty, SK; Dhanalakshmi, K

doi:10.2514/3.12756

Cited by 4 publications

(2 citation statements)

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“…These flow parameters for computations were chosen in order to make comparison with available experimental results. The JUMBO2D solver code used in the present analysis has been extensively validated and applied to a variety of flow problems [6,9,11,12]. Comparison of lift coefficient C L , drag coefficient C D , quarter chord moment coefficient C M and coefficient of pressure distribution C P are shown in figures 5 and 6 for NACA 4412 and NACA 0011 airfoils respectively.…”

Section: Resultsmentioning

confidence: 99%

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Navier-Stokes Analysis of Airfoils with Gurney Flap

Singh

Dhanalakshmi

Chakrabartty

2007

Journal of Aircraft

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Two dimensional steady state Navier-Stokes computations were performed to determine the effect of Gurney flap on NACA 4412 and NACA 0011 airfoils. Gurney flap sizes selected for the study range from 0.5% to 4% of the airfoil chord. A compressible Navier-Stokes solver with Baldwin-Lomax turbulence model, JUMBO2D, is used to predict the flow field around the airfoils. Computed results have been compared with available experimental and computational data. There is good correlation observed between computed and experimental data. Addition of Gurney flap increases the lift coefficient significantly with very little drag penalty if proper Gurney flap height is selected. Nose down pitching moment also increases with Gurney flap height. Flow field structure near the trailing edge shows very good resemblance with Liebeck's hypothesis that provides the possible explanation for the increased aerodynamic performance.

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Section: Resultsmentioning

confidence: 99%

“…Baldwin-Lomax [5] turbulent model is used for the computation of turbulent flow. Details of the governing equations, boundary conditions, finite volume formulation, time integration and the turbulence model used are available in literature [6,7,8,9].…”

Section: Jumbo2d Solver Codementioning

confidence: 99%