Accession Number : AD0428533


Title :   THEORETICAL BASE PRESSURE ANALYSIS OF AXISYMMETRIC EJECTORS WITHOUT INDUCED FLOW


Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN


Personal Author(s) : Bauer, R C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/428533.pdf


Report Date : Jan 1964


Pagination or Media Count : 51


Abstract : The two-dimensional supersonic base pressure theory developed by Dr. H. H. Korst, which applies to two-dimensional systems with straight jet boundaries, has been modified to be more applicable to axisymmetric ejector systems. The modification consists of a new theory for estimating the peak recompression static pressure which is applicable to either axisymmetric or two- dimensional jets having straight or curved boundaries. Significantly, the recompression mechanism is not independent of viscous effects for systems which produce a non-uniform inviscid flow field. Both the recompression theory and the modified base pressure theory are experimentally verified for the case of isoenergetic mixing and negligible initial boundary layer. The recompression theory is shown to agree with experimental results to within =10% whereas the experimental base pressure results have a standard deviation of 6% with respect to the modified base pressure theory.


Descriptors :   *EJECTORS , *JET FLOW , COMPRESSIBLE FLOW , CONFIGURATIONS , ENERGY , EXPERIMENTAL DATA , LIQUID JETS , ORDNANCE , PRESSURE GRADIENTS , SHOCK WAVES , SUPERSONIC FLOW , TEMPERATURE , TWO DIMENSIONAL FLOW , VISCOSITY


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE