Accession Number:

AD0601319

Title:

IMPROVED HYPERSONIC LAMINAR WAKE CALCULATIONS INCLUDING RATE CHEMISTRY

Descriptive Note:

Technical rept.

Corporate Author:

GENERAL APPLIED SCIENCE LABS INC WESTBURY NY

Personal Author(s):

• Steiger, Martin H.

Report Date:

1961-08-25

Pagination or Media Count:

35.0

Abstract:

This report was concerned with the prediction of the properties of a laminar, axisymmetric, hypersonic wake which may not be in thermodynamic equilibrium. The flow was treated as a continuum, by a boundary layer approximation, utilizing integral method techniques. The analysis included a An improved rate chemistry and representative thermodynamics. The air chemistry included rate processes which involve seven species, i.e., O2, O, N2, N, NO, NO ion and electron. b An additional parameter was introduced H sub n n sub o which couples the energy integral equation and boundary condition. This permits a simple evaluation of the effect of an initial defect in the stagnation enthalpy andor Prandtl - Lewis numbers different from unity on the flow field. c The system of equations was programmed on the IBM 7090 digital computer. This enables such advantages as automatic interval change, utilization of a Runge-Kutta scheme in the forward integration, test for maximum truncation error, evaluation of the temperature which is given in terms of a transcendental algebraic expression to any desirable accuracy and calculation of profiles in the physical plane at any predetermined axial stations.

Descriptors:

• *REACTION KINETICS
• *LAMINAR FLOW
• THERMODYNAMICS
• INTEGRALS
• COMPUTER PROGRAMMING
• CHEMISTRY
• AXISYMMETRIC FLOW
• WAKE
• DIFFUSION
• VISCOSITY
• MOMENTUM
• GAS FLOW
• HYPERSONIC FLOW
• AIR
• DENSITY
• PRESSURE

Subject Categories:

• Physical Chemistry
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE