• Corpus ID: 53469656

Flat plate self-noise reduction at low-to-moderate Reynolds number with trailing edge serrations

@inproceedings{Moreau2011FlatPS,
  title={Flat plate self-noise reduction at low-to-moderate Reynolds number with trailing edge serrations},
  author={Danielle J. Moreau and Laura A. Brooks and Con J. Doolan},
  year={2011}
}
This paper explores the noise reduction potential of sawtooth trailing edge serrations on a flat plate at lowto� moderate Reynolds number. The noise radiated by a flat plate with both sharp and serrated trailing edges has been measured in an anechoic wind tunnel at the University of Adelaide. The noise measurements have been taken at a range of flow speeds (Reynolds numbers of Re c < 4.5 × 10 5 , based on chord) for two different sawtooth geometries. Trailing edge serrations are found to… 

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References

SHOWING 1-10 OF 16 REFERENCES

On the noise and wake flow of an airfoil with broken and serrated trailing edges

This paper represents the results of an experimental program aiming at exploring the effectiveness of several broken, saw-tooth shaped trailing edges to suppress the instability tone noise at

Noise produced by a sawtooth trailing edge

An analysis is made of the noise produced by low Mach number turbulent flow over the serrated edge of a flat plate airfoil at zero angle of attack. The serrations are of sawtooth profile of

Aerodynamic noise of a serrated trailing edge

The flow and noise generated by a sharp trailing edge

Aeroacoustic results obtained from the study of the noise generated by turbulent flow over a trailing edge are presented. The test model used was a 5 mm flat plate with a sharp trailing edge. Models

Acoustic analysis of flat plate trailing edge noise

This paper presents an acoustic analysis of the noise generated at the trailing edge of a flat plate encountering low turbulence fluid flow. Experimental measurements were taken in an anechoic wind

Reduction of Wind Turbine Noise using Optimized Airfoils and Trailing-Edge Serrations

Acoustic field measurements were carried out on a 94-m-diam three-bladed wind turbine with one standard blade, one blade with trailing-edge serrations, and one blade with an optimized airfoil shape.

Experimental demonstration of wind turbine noise reduction through optimized airfoil shape and trailing-edge serrations

The objective of the European project DATA (Design and Testing of Acoustically Optimized Airfoils for Wind Turbines) is a reduction of trailing-edge (TE) noise by modifying the airfoil shape and/or

Momentum transfer in boundary layers

Too many books on fluid mechanics are written on the strength of original material which makes up one chapter or less; the remainder being a restatement of the familiar contents of other books. This

Acoustics of fluid-structure interactions

Preface 1. Introduction 2. Aerodynamic sound in unbounded flows 3. Sound generation in a fluid with rigid boundaries 4. Sound generation in a fluid with flexible boundaries 5. Interaction of sound

On the mechanisms of serrated airfoil trailing edge noise reduction