论文信息 - Numerical Modeling of Active Flow Control in a Boundary Layer Ingesting Offset Inlet

Numerical Modeling of Active Flow Control in a Boundary Layer Ingesting Offset Inlet

This investigation evaluates the numerical prediction of flow distortion and pressure recovery for a boundary layer ingesting offset inlet with active flow control devices. The numerical simulations are computed using a Reynolds averaged Navier-Stokes code developed at NASA. The numerical results are validated by comparison to experimental wind tunnel tests conducted at NASA Langley Research Center at both low and high Mach numbers. Baseline comparisons showed good agreement between numerical and experimental results. Numerical simulations for the inlet with passive and active flow control also showed good agreement at low Mach numbers where experimental data has already been acquired. Numerical simulations of the inlet at high Mach numbers with flow control jets showed an improvement of the flow distortion. Studies on the location of the jet actuators, for the high Mach number case, were conducted to provide guidance for the design of a future experimental wind tunnel test.

[1] Reynaldo J. Gomez,et al. Advances in automatic overset grid generation around surface discontinuities , 1999 .

[2] B. Allan,et al. Experimental and Computational Evaluation of Flush-Mounted, S-Duct Inlets , 2004 .

[3] J. Seddon,et al. Intake Aerodynamics, Second Edition , 1999 .

[4] Kenrick A. Waithe. Source Term Model for Vortex Generator Vanes in a Navier-Stokes Computer Code , 2004 .

[5] R. H. Liebeck,et al. Design of the Blended Wing Body Subsonic Transport , 2002 .

[6] Brian G. Allan,et al. Numerical Simulations of Vortex Generator Vanes and Jets on a Flat Plate , 2002 .

[7] T. Pulliam,et al. A diagonal form of an implicit approximate-factorization algorithm , 1981 .

[8] J. L. Steger,et al. A chimera grid scheme , 2011 .

[9] F. Menter. Improved two-equation k-omega turbulence models for aerodynamic flows , 1992 .

[10] Luther N. Jenkins,et al. Active Flow Control on a Boundary-Layer-Ingesting Inlet , 2004 .

[11] Florian,et al. Improved Two-Equation k- Turbulence Models for Aerodynamic Flows , 2022 .

[12] Robert Liebeck,et al. An experimental investigation of boundary layer ingestion in a diffusing S-duct with and without passive flow control , 1999 .