T r a n s o n i c f l ow o v e r a h a r m o n i c a l l y o s c i l l a t i n g a i r f o i l is computed by s o l v i n g t h e two-dimens ional E u l e r e q u a t i o n s i n i n t e g r a l form u s i n g t h e f i n i t e volume scheme. The d i s s i p a t i o n t e rms a r e c o n s t r u c t e d a c c o r d i n g t o t h e o r y of t o t a l v a r i a t i o n d i m i n i s h i n g schem...

Introduction. This paper deals with some transonic flow problems for the supersonic axial flow compressor: these arise in connection with flutter analysis for fan blading. Very detailed solutions for unsteady plane transonic flows through a cascade of flat plates have been given by Goldstein Braun and Adamczyk (1977) and Nagashima and Whitehead (1977), see also Goldstein (1975), Kurosaka (1974)...

Abstract The calibration data of a five-hole probe and six-hole designed for measurements in transonic turbomachinery flows are presented. probes feature special base pressure hole on the back side to avoid Mach number insensitivity near unity. There is only little literature available performance such probes, especially with large radial flow angles. To close this gap, calibrated angles up 32 ...

In this paper, we construct various special solutions on a convergent-divergent surface for the steady compressible complete Euler system and established the stability of the purely subsonic flows. For a given pressure p0 prescribed at the “entry” of the surface, as the pressure p1 at the “exit” decreases, the flow patterns on the surface change continuously as those happen in a de Laval nozzle...

The lag model proposed by Olsen and Coakley (2001) is applied to simulate the steady and unsteady transonic flows in a diffuser. The unsteady flows are induced by imposing fluctuating back-pressures. A fully implicit time–accurate multigrid algorithm is used for solving the Navier-Stokes equations and the coupled k-ω turbulence model equations. Two test cases are investigated, one with a weak s...

A numerical study is conducted to investigate fluidic control for transonic flow over an open cavity. Numerical results are obtained for the unsteady threedimensional flow with different steady mass injection rates upstream of the cavity. The simulations use a hybrid two-equation turbulence model in the Detached Eddy Simulations (DES) to calculate the flow and acoustic fields. Computational res...

When powerful machines such as the Cray-2 became available in the late 1980s, a number of researchers investiWe investigate the use of an inexact Newton’s method to solve the potential equations in the transonic regime. As a test case, gated use of exact Newton’s method for solving steady we solve the two-dimensional steady transonic small disturbance state CFD problems. Direct sparse matrix so...