The demand for efficiency in today’s and in future civil aircraft is such that experimental studies alone do not suffice to optimize aircraft aerodynamics. In this context, much effort has been spent in the past decade to develop numerical methods capable of reproducing the phenomena that occur in the engine flow field. This paper presents some studies in Computational Fluid Dynamics related to supersonic inlets. Two approaches are considered. First, there is a need for a code capable of calculating in a cost-efficient way the entire flow field around a two-dimensional or three-dimensional inlet, e.g., to perform parametric studies. To this effect, a computing method based on grid construction by mesh generator dedicated to inlet shapes and on the discretization of the unsteady Euler equations with an explicit upwind scheme was developed. The treatment of complex geometries led us to adopt a multiblock grid approach. Therefore particular attention was paid to the treatment of the boundary conditions between the different domains. Second, there is a need for a code that can capture local phenomena in order to get a better understanding of inlet behavior (shock/shock, shock/boundary layer interactions, etc.). To this effect a two-dimensional turbulent Navier-Stokes code is used. The two-equation k-ε turbulence model included in the program seems to be one of the most successful models for calculating flow realistically. Correction of the near-wall influence extends its capability to complex flow configurations, e.g., those with separated zones.
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January 1994
Research Papers
Numerical Simulation of the Flow Field Around Supersonic Air-Intakes
G. Freskos,
G. Freskos
CERFACS, 42 av. Coriolis, 31057 Toulouse, France
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O. Penanhoat
O. Penanhoat
SNECMA Villaroche Center, 77550 Moissy-Cramayel, France
Search for other works by this author on:
G. Freskos
CERFACS, 42 av. Coriolis, 31057 Toulouse, France
O. Penanhoat
SNECMA Villaroche Center, 77550 Moissy-Cramayel, France
J. Eng. Gas Turbines Power. Jan 1994, 116(1): 116-123 (8 pages)
Published Online: January 1, 1994
Article history
Received:
February 21, 1992
Online:
April 24, 2008
Citation
Freskos, G., and Penanhoat, O. (January 1, 1994). "Numerical Simulation of the Flow Field Around Supersonic Air-Intakes." ASME. J. Eng. Gas Turbines Power. January 1994; 116(1): 116–123. https://doi.org/10.1115/1.2906780
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