Accession Number : ADA044998


Title :   Transient Combustion in Granular Propellant Beds. Part I. Theoretical Modeling and Numerical Solution of Transient Combustion Processes in Mobile Granular Propellant Beds


Descriptive Note : Final rept. 15 Feb 74-14 Feb 77


Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MECHANICAL ENGINEERING


Personal Author(s) : Koo, J. H. ; Kuo, K. K.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA044998


Report Date : AUG 1977


Pagination or Media Count : 179


Abstract : Gas-permeable propellants possess great potential for producing sizable thrusts within extremely short time intervals. A research program was set up with the objectives: (1) to obtain a deeper understanding of high speed flame propagation and the gas dynamic behavior of two-phase reactive flow systems; and (2) to predict the rates of gasification during transient heterogeneous combustion of granular propellant beds. The results show that the flame front accelerates significantly and the rate of pressurization increases substantially in the downstream direction. The igniter strength and the propellant gasification temperature were found to have pronounced effects on the pressurization process. The theoretical predictions are in close agreement with the experimental data.


Descriptors :   *MATHEMATICAL MODELS , *COMBUSTION , *NUMERICAL METHODS AND PROCEDURES , *BEDS(PROCESS ENGINEERING) , *PROPELLANT GRAINS , TRANSIENTS , PERMEABILITY , EIGENVALUES , GAS DYNAMICS , MOBILE , BOUNDARY VALUE PROBLEMS , SMALL ARMS , FLAME PROPAGATION , TWO PHASE FLOW , POROUS MATERIALS , GUN PROPELLANTS , INTERIOR BALLISTICS.


Subject Categories : NUMERICAL MATHEMATICS
      AMMUNITION AND EXPLOSIVES
      COMBUSTION AND IGNITION


Distribution Statement : APPROVED FOR PUBLIC RELEASE