Journal ArticleDOI
Acoustic Prediction of LAGOON Landing Gear: Cavity Noise and Coherent Structures
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In this article, the LAGOON landing gear configuration is performed using different unstructured meshes, and one mesh is generated based on available experimental and numerical data, and b...Abstract:
Detached-eddy simulations of the LAGOON landing gear configuration are performed using different unstructured meshes. One mesh is generated based on available experimental and numerical data, and b...read more
Citations
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Journal ArticleDOI
Randomized resolvent analysis
TL;DR: In this paper, randomized numerical algebra is incorporated into resolvent analysis to reduce large-scale resolute operators to their low-rank approximations, and the key to finding the resolute modes accurately is to weigh the random test matrix using insights from the base flow.
Journal ArticleDOI
On the differences in noise predictions based on solid and permeable surface Ffowcs Williams–Hawkings integral solutions:
TL;DR: The Fowcs Williams-Hawkings equation is widely used in computational aero-acoustics to post-process unsteady simulations and provide the sound at distances beyond the accurate range of the grid as discussed by the authors.
Journal ArticleDOI
Numerical noise prediction and source identification of a realistic landing gear
TL;DR: In this article, the authors combine high-fidelity CFD simulations and the Ffowcs Williams-Hawkings (FWH) acoustic analogy to identify potential sources of tonal noise.
Journal ArticleDOI
Randomized resolvent analysis
TL;DR: In this paper, randomized numerical linear algebra is used to reduce the dimension of the resolvent operator for high-Reynolds-number turbulent flow analysis, which can reduce computational speed up and memory saving compared to the standard resOLvent analysis.
Journal ArticleDOI
Calibration of projection-based reduced-order models for unsteady compressible flows
TL;DR: An analysis of calibration for reduced-order models (ROMs) is presented and Galerkin models are shown to be more accurate than those computed by LSPG when the non-conservative form of the Navier-Stokes equations are solved.
References
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Proceedings ArticleDOI
A one-equation turbulence model for aerodynamic flows
Philippe R. Spalart,S. Allmaras +1 more
Journal ArticleDOI
Sound Generation by Turbulence and Surfaces in Arbitrary Motion
TL;DR: In this article, sound generation by turbulence and surfaces in arbitrary motion is discussed, and sound and multipole fields and governing equations are discussed. But sound generation is not discussed in this paper.
Journal ArticleDOI
Wavelet Transforms and their Applications to Turbulence
TL;DR: Wavelet transforms are recent mathematical techniques, based on group theory and square integrable representations, which allows one to unfold a signal, or a field, into both space and scale, and possibly directions.
Proceedings ArticleDOI
The design and application of upwind schemes on unstructured meshes
TL;DR: Cell-centered and mesh-vertex upwind finite-volume schemes are developed which utilize multi-dimensional monotone linear reconstruction procedures which differ from existing algorithms (even on structured meshes).