Accession Number:

AD0614719

Title:

SECOND-ORDER BOUNDARY-LAYER EFFECTS IN HYPERSONIC FLOW PAST AXISYMMETRIC BLUNT BODIES,

Descriptive Note:

Corporate Author:

STANFORD UNIV CALIF DIV OF ENGINEERING MECHANICS

Personal Author(s):

Report Date:

1964-05-25

Pagination or Media Count:

31.0

Abstract:

First- and second-order boundary-layer theory are examined in detail for some specific flow cases of practical interest. These cases are for flows over blunt axisymmetric bodies in hypersonic high-altitude or low density flow where second-order boundary-layer quantities may become important. These cases consist of flow over a hyperboloid and a paraboloid both with free-stream Mach number infinity and flow over a sphere at free-stream Mach number 10. The method employed in finding the solutions is an implicit finite-difference scheme. It is found to exhibit both stability and accuracy in the examples computed. The method consists of starting near the stagnation-point of a blunt body and marching downstream along the body surface. Several interesting properties of the boundary layer are pointed out, such as the nature of some second-order boundary-layer quantities far downstream in the flow past a sphere and the effect of strong vorticity interaction on the second-order boundary layer in the flow past a hyperboloid. In several of the flow cases, results are compared with other theories and experiments. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE