Accession Number : ADP006056

Title :   Numerical Analysis of Flow through Scramjet Engine Inlets,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CEN TER

Personal Author(s) : Kumar, Ajay

Report Date : NOV 1987

Pagination or Media Count : 11

Abstract : A set of computer programs has been developed to analyze flow through supersonic combustion ramjet (scramjet) inlets. These programs solve either the two- or three-dimensional Euler/Navier-Stokes equations in full conversation form by MacCormack's explicit or explicit-implicit method. An algebraic two-layer eddy viscosity model is used for turbulent flow calculations. The programs are operational on Control Data CYBER-200 series vector-processing computer system and have been optimized to take maximum advantage of the vector processing computer system and have been optimized to take maximum advantage of the vector processing capability of the system. Since their development, the programs have been extensively verified and used to analyze a number of very complex inlet configurations. In this paper, results are presented from two-dimensional, quasi-three-dimensional, and three-dimensional analyses of the inlet flow field to illustrate the use of the programs.

Descriptors :   *INTERNAL, *SUPERSONIC COMBUSTION RAMJET ENGINES, FLOW, SUPERSONIC INLETS, RAMJET INLETS, NAVIER STOKES EQUATIONS, VECTOR ANALYSIS, VORTICES, VISCOSITY, EDDIES(FLUID MECHANICS), COMPUTER PROGRAMMING, GRAPHS, SYMPOSIA.

Subject Categories : Fluid Mechanics
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE