Journal ArticleDOI
Laminar boundary layer instability noise produced by an aerofoil
Michael Kingan,John Pearse +1 more
TLDR
In this paper, the authors presented a theoretical model to predict the frequency of laminar boundary layer instability noise produced by an arbitrary aerofoil, which was validated against a number of well-known published experiments and also against the results of an experimental investigation.About:
This article is published in Journal of Sound and Vibration.The article was published on 2009-05-22. It has received 90 citations till now. The article focuses on the topics: Boundary layer & Laminar flow.read more
Citations
More filters
Journal ArticleDOI
Laminar separation bubble development on an airfoil emitting tonal noise
TL;DR: In this paper, the feedback effects due to tonal noise emission in a laminar separation bubble (LSB) formed on the suction side of an airfoil in low Reynolds number flows were investigated.
Journal ArticleDOI
An experimental study of airfoil instability tonal noise with trailing edge serrations
Tze Pei Chong,Phillip Joseph +1 more
TL;DR: In this paper, the effect of serrated edges on airfoil instability noise was investigated in an open jet wind tunnel with a range of jet speeds (10-60m/s), angles of attack (0 o, 1.4 o and 4.2 o ) and saw tooth geometries (four types).
Journal ArticleDOI
Self-Noise Produced by an Airfoil with Nonflat Plate Trailing-Edge Serrations
TL;DR: In this article, the results of an experimental study aimed at reducing the airfoil self-noise by the trailing edge serration of four different sawtooth geometries (defined in the serration angle and length) were presented.
Journal ArticleDOI
Experimental investigation of aerofoil tonal noise generation
TL;DR: In this article, the authors investigated the mechanisms associated with tonal noise emission from a NACA 0012 aerofoil at moderate incidence (0, 1, 2 and 4 angle of attack) and with Reynolds numbers ranging from 100 000 to 270 000.
Journal ArticleDOI
Regimes of tonal noise on an airfoil at moderate Reynolds number
TL;DR: In this article, the authors present a survey of the regimes of tonal noise generation for low to moderate chord-based Reynolds number between and and effective angle of attack between and for the NACA 0012 airfoil profile.
References
More filters
Book
Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Book
Spectral Methods in MATLAB
TL;DR: This paper presents a meta-analyses of Chebyshev differentiation matrices using the DFT and FFT as a guide to solving fourth-order grid problems.
Book
Stability and Transition in Shear Flows
TL;DR: In this article, the authors present an approach to the Viscous Initial Value Problem with the objective of finding the optimal growth rate and the optimal response to the initial value problem.
Journal ArticleDOI
Viscous-inviscid analysis of transonic and low Reynolds number airfoils
Mark Drela,Michael B. Giles +1 more
TL;DR: In this article, a method of accurately calculating transonic and low Reynolds number airfoil flows, implemented in the viscous-inviscid design/analysis code ISES, is presented.
Airfoil self-noise and prediction
TL;DR: In this article, a prediction method for the self-generated noise of an airfoil blade encountering smooth flow was developed for a large scale-model helicopter rotor, and the predictions compared well with experimental broadband noise measurements.