Project Title:

Numerical Simulation of the Inlet Buzz Problem by Solution of the Time Dependent

01.01-0333B
Numerical Simulation of the Inlet Buzz Problem by Solution of the Time Dependent
Navier-Stokes Equations
Scientific Research Associates, Inc.
P.O. Box 498
Glastonbury
CT
06033
Buggeln
Richard C.
24851
49,879
LeRC

Abstract:

Simulation of the entire external compression inlet flow field is accomplished via
the three-dimensional, time-dependent Navier-Stokes equations.  This single set of
governing equations includes details of the wall viscous region as well as both steady
state and time dependent shock wave - boundary layer interactions.  Inclusion of
a time-dependent capability allows application to the inlet buzz problem.   Using
different approximate equations in different portions of the flow field requires
that they then joined through a set of matching conditions.  Therefore, the Navier-Stokes
simulation provides a more powerful tool than previously exist for the external compression
inlet problem.  In addition, being general, this same approach can be used for both
mixed and internal compression inlets.  A general three-dimensional code is applicable
to this problem and a demonstration two-dimensional calculation can run.  The procedure's
capability has been compared with existing data.