Book Chapter10.1007/978-981-15-4284-8_8
Methodologies and Solutions of Computational Aeroacoustic Problems
Tapan K. Sengupta,Yogesh G. Bhumkar +1 more
- 01 Jan 2020
- pp 441-519
2
TL;DR: Computational aeroacoustics is an important research area which connects aerodynamics and acoustics and can be broadly categorized into three different methodologies based on the approach for estimating acoustic field.
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Abstract: Computational aeroacoustics (CAA) is an important research area which connects aerodynamics and acoustics. This research area involves simulations of flow-induced acoustic noise and can be broadly categorized into three different methodologies based on the approach used for estimating acoustic field. First two methodologies use computed fluid flow information to further calculate acoustic field details using either an acoustic analogy approach or by solving set of perturbation equations.
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Citations
The acoustic spectrum of axial flow machines
S.E. Wright
- 01 Apr 1975
TL;DR: In this paper, the authors compared rotor spectra from a variety of axial flow machines and acoustic trends examined, and found that the minimum broad band noise generated by ducted and free field rotors corresponds to laminar and turbulent boundary layer shedding.
108
•Book
Computational Aerodynamics and Aeroacoustics
Tapan K. Sengupta,Yogesh G. Bhumkar +1 more
- 18 May 2020
8
References
Statistics in Function Space
D. D. Kosambi
- 01 Jan 2016
TL;DR: Had DDK followed up on this paper in a more systematic manner, and if attribution had been given more properly, the Karhunen-Loeve theorem may well have been known more widely as the Kosambi-Karhunen -Kloeve conjecture as discussed by the authors.
The intnesity of Aeolian tones
TL;DR: In this article, it was shown that the mean square acoustic pressure generated by the motion about a cylinder at Reynolds numbers between 40 and 160 is approximately where ρ is the density of the fluid and t the time, and that the magnitude of the fluctuations in drag is about 10% of this.
Numerical simulation of the flow behind a rotary oscillating circular cylinder
Seung-Jin Baek,Hyung Jin Sung +1 more
TL;DR: In this paper, a numerical study of flow behind a circular cylinder in a uniform flow, where the cylinder was rotationally oscillated in time, was made, and the temporal behavior of vortex formation was scrutinized over broad ranges of the two externally specified parameters, i.e., the dimensionless rotary oscillating frequency (0.110⩽Sf0.220) and the maximum angular amplitude of rotation (θmax=15°, 30°, and 60°).
Characteristics of flow over a rotationally oscillating cylinder at low Reynolds number
TL;DR: In this article, the effects of rotary oscillation on unsteady laminar flow past a circular cylinder have been investigated, and it is shown that the rotational oscillation has significant effects on the flow.