Accession Number : AD0693987

Title :   A TIME-DEPENDENT ANALYSIS FOR QUASI-ONE-DIMENSIONAL NOZZLE FLOWS WITH VIBRATIONAL AND CHEMICAL NONEQUILIBRIUM.

Descriptive Note : Final rept.,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Anderson,John D. , Jr

Report Date : MAY 1969

Pagination or Media Count : 58

Abstract : A new technique is presented for the numerical solution of quasi-one-dimensional, vibrational and chemical nonequilibrium nozzle flows including nonequilibrium conditions both upstream and downstream of the throat. This new technique is a time-dependent analysis which entails the explicite finite-difference solution of the quasi-one-dimensional unsteady flow equations in steps of time, starting with assumed initial distributions throughout the nozzle. The steady-state solution is approached at large values of time. A virtue of the present time-dependent analysis is its simplicity, which prevails from its initial physical formulation to the successful receipt of numerical results. Also, the present solution yields the transient as well as the steady-state nonequilibrium nozzle flows. To exemplify the present analysis, results are given for several cases of vibrational and chemical nonequilibrium expansions through nozzles. (Author)

Descriptors :   (*ROCKET NOZZLES, NOZZLE GAS FLOW), CONVERGENT DIVERGENT NOZZLES, FLOW FIELDS, NOZZLE THROATS, NOZZLE AREA RATIO, MOMENTUM, REACTION KINETICS, NUMERICAL ANALYSIS, NONEQUILIBRIUM FLOW

Subject Categories : Fluid Mechanics
      Rocket Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE