IMPROVED HYPERSONIC LAMINAR WAKE CALCULATIONS INCLUDING RATE CHEMISTRY
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 and/or 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 25, 1961
- Accession Number
- AD0601319
Entities
People
- Martin H. Steiger