Fluid-structure interactions in compressible cavity flows

Wagner, Justin L.; Casper, Katya Marie; Beresh, Steven J.; Hunter, Patrick S.; Spillers, Russell Wayne; Henfling, John F.; Mayes, Randall L.

doi:10.1063/1.4922021

Fluid-structure interactions in compressible cavity flows

Journal Article · Mon Jun 08 04:00:00 EDT 2015 · Physics of Fluids

DOI:https://doi.org/10.1063/1.4922021· OSTI ID:1184573

Wagner, Justin L. ^[1]; Casper, Katya Marie ^[1]; Beresh, Steven J. ^[1]; Hunter, Patrick S. ^[1]; Spillers, Russell Wayne ^[1]; Henfling, John F. ^[1]; Mayes, Randall L. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Experiments were performed to understand the complex fluid-structure interactions that occur during aircraft internal store carriage. A cylindrical store was installed in a rectangular cavity having a length-to-depth ratio of 3.33 and a length-to-width ratio of 1. The Mach number ranged from 0.6 to 2.5 and the incoming boundary layer was turbulent. Fast-response pressure measurements provided aeroacoustic loading in the cavity, while triaxial accelerometers provided simultaneous store response. Despite occupying only 6% of the cavity volume, the store significantly altered the cavity acoustics. The store responded to the cavity flow at its natural structural frequencies, and it exhibited a directionally dependent response to cavity resonance. Specifically, cavity tones excited the store in the streamwise and wall-normal directions consistently, whereas a spanwise response was observed only occasionally. Also, the streamwise and wall-normal responses were attributed to the longitudinal pressure waves and shear layer vortices known to occur during cavity resonance. Although the spanwise response to cavity tones was limited, broadband pressure fluctuations resulted in significant spanwise accelerations at store natural frequencies. As a result, the largest vibrations occurred when a cavity tone matched a structural natural frequency, although energy was transferred more efficiently to natural frequencies having predominantly streamwise and wall-normal motions.

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1184573

Report Number(s):: SAND--2014-19234J; 540805

Journal Information:: Physics of Fluids, Journal Name: Physics of Fluids Journal Issue: 6 Vol. 27; ISSN 1070-6631

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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Fluid–Structure Interactions on a Tunable Store in Complex Cavity Flow Casper, Katya M.; Wagner, Justin L.; Beresh, Steven J. Journal of Aircraft, Vol. 56, Issue 4 https://doi.org/10.2514/1.c035050	journal	July 2019
Complex Geometry Effects on Cavity Resonance Casper, Katya M.; Wagner, Justin L.; Beresh, Steven J. AIAA Journal, Vol. 54, Issue 1 https://doi.org/10.2514/1.j054273	journal	January 2016
Response of a Store with Tunable Natural Frequencies in Compressible Cavity Flow Wagner, Justin L.; Casper, Katya M.; Beresh, Steven J. AIAA Journal, Vol. 54, Issue 8 https://doi.org/10.2514/1.j054688	journal	August 2016
Spatial Distribution of Resonance in the Velocity Field for Transonic Flow over a Rectangular Cavity Beresh, Steven J.; Wagner, Justin L.; Casper, Katya M. AIAA Journal, Vol. 55, Issue 12 https://doi.org/10.2514/1.j056106	journal	December 2017
Volumetric Velocimetry of Complex Geometry Effects on Transonic Flow over Cavities DeMauro, Edward P.; Beresh, Steven J.; Casper, Katya M. AIAA Journal, Vol. 57, Issue 5 https://doi.org/10.2514/1.j057714	journal	May 2019
Response of a Store with Tunable Natural Frequencies in Compressible Cavity Flow Wagner, Justin L.; Casper, Katya M.; Beresh, Steven J. 53rd AIAA Aerospace Sciences Meeting https://doi.org/10.2514/6.2015-1293	conference	January 2015
Simultaneous PSP and surface deformation measurements for fluid-structure interactions in a shock tube Lynch, Kyle P.; Jones, Elizabeth; Wagner, Justin L. 2018 Fluid Dynamics Conference https://doi.org/10.2514/6.2018-3870	conference	June 2018

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