Accession Number : AD0663539

Title :   ON THE APPLICATION OF INTEGRAL METHODS IN SEPARATED FLOWS,

Corporate Author : TECHNION - ISRAEL INST OF TECH HAIFA DEPT OF AERONAUTICAL ENGINEERING

Personal Author(s) : Seginer,Arnan ; Rom,Josef

Report Date : OCT 1967

Pagination or Media Count : 21

Abstract : It is shown that the mixing function used in the integral method of Crocco and Lees implies the assumption of similarity of the flow field. As the separated flow is non similar, application of this formulation to the complete flow field is not permissible. Such an application leads to erroneous results. Good agreement with experimental results, previously obtained by modifications of the Crocco-Lees method, is shown to be due to the division of the separated flow region into distinct zones where, in each of these zones, the flow can be assumed to be consistent with a certain similar solution. The singularity at the 'critical point' of the Crocco-Lees method is shown to be obtained by the application of the integral equations over the complete separated region disregarding the similarity restrictions. Some questions are raised concerning the validity of the application of the integral of the first moment of the momentum equation over the complete separated region. It seems that a re-evaluation of the formulation of the equations applicable to separated flow analysis is required. (Author)

Descriptors :   (*FLOW SEPARATION, INTEGRAL EQUATIONS), FLOW FIELDS, TRANSPORT PROPERTIES, MOMENTUM, BOUNDARY LAYER, FUNCTIONS(MATHEMATICS), ISRAEL

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE