Results 281 to 290 of about 50,445 (343)

Global instability in the onset of transonic-wing buffet

Journal of Fluid Mechanics, 2019
Global stability analysis is used to analyse the onset of transonic buffet on infinite swept and unswept wings. This high-Reynolds-number flow is governed by the unsteady Reynolds averaged Navier–Stokes equations. The analysis generalizes earlier studies
J. Crouch, A. Garbaruk, M. Strelets
semanticscholar   +1 more source

Machine Learning Enabled Adaptive Optimization of a Transonic Compressor Rotor With Precompression

Journal of turbomachinery, 2019
In aerodynamic design, accurate and robust surrogate models are important to accelerate computationally expensive computational fluid dynamics (CFD)-based optimization.
M. Joly, S. Sarkar, D. Mehta
semanticscholar   +1 more source

Flutter Analysis of the Transonic Truss-Braced Wing Aircraft Using Transonic Correction

AIAA Scitech 2019 Forum, 2019
This paper describes a flutter analysis method for the Transonic Truss-Braced Wing aircraft using a vortexlattice method coupled to an unsteady transonic correction method to account for unsteady aerodynamics in transonic flow.
N. Nguyen, Jason Fugate, U. Kaul, J. Xiong   +3 more
semanticscholar   +1 more source

Analysis of nonlinear transonic blockage in unsteady transonic flows

28th Fluid Dynamics Conference, 1997
Numerical simulation of the oscillation of strong to weak shocks in a Laval nozzle, due to downstream static pressure sinusoidal fluctuations, is presented. The strong shock motion is mainly harmonic. However, static pressure signals, recorded near the shock/boundary layer interaction and on the axis downstream of the shock, show several higher modes ...
P. Ferrand, L. Smati, S. Aubert, H. Attassi, P. Ferrand, L. Smati, S. Aubert, H. Attassi   +7 more
openaire   +1 more source

Polymer/Ceramic Pressure-Sensitive Paint with Reduced Roughness for Unsteady Measurement in Transonic Flow

AIAA Journal, 2018
Polymer/ceramic pressure-sensitive paints with reduced surface roughness were developed for measuring unsteady pressure fields in transonic flow.
Yosuke Sugioka, D. Numata, K. Asai, S. Koike, K. Nakakita, T. Nakajima   +5 more
semanticscholar   +1 more source

Transonic whistler solitons

Physics Letters A, 1976
Abstract We consider the coupling of ion-acoustic perturbations with large amplitude electron whistler waves. Transonic envelope whistler solitons having a group velocity near the ion-acoustic speed are found.
P Shukla, M.Y Yu
openaire   +1 more source

The Present Challenge of Transonic Compressor Blade Design

Journal of turbomachinery, 2018
The flow through a transonic compressor cascade shows a very complex structure due to the occurring shock waves. In addition, the interaction of these shock waves with the blade boundary layer inherently leads to a very unsteady flow behavior. The aim of
A. Hergt, J. Klinner, Jens Wellner, C. Willert, S. Grund, W. Steinert, M. Beversdorff   +6 more
semanticscholar   +1 more source

Transonic Hodograph Design Problems

Theoretical and Computational Fluid Dynamics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Flow in Transonic Compressors

AIAA Journal, 1980
Introduction B the term transonic compressor we mean an axial flow compressor in which the inlet flow Mach number, relative to the rotating blades, varies from below unity at radii near the inner casing or hub to values substantially above unity at radii near the blade tips.
openaire   +1 more source

Convexity of Self-Similar Transonic Shocks and Free Boundaries for the Euler Equations for Potential Flow

Archive for Rational Mechanics and Analysis, 2018
We are concerned with geometric properties of transonic shocks as free boundaries in two-dimensional self-similar coordinates for compressible fluid flows, which are not only important for the understanding of geometric structure and stability of fluid ...
Gui-Qiang G. Chen, M. Feldman, Wei Xiang
semanticscholar   +1 more source