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This content will become publicly available on May 31, 2017

Title: Pressure loadings in a rectangular cavity with and without a captive store

Simulations of the flow past a rectangular cavity containing a model captive store are performed using a hybrid Reynolds-averaged Navier–Stokes/large-eddy simulation model. Calculated pressure fluctuation spectra are validated using measurements made on the same configuration in a trisonic wind tunnel at Mach numbers of 0.60, 0.80, and 1.47. The simulation results are used to calculate unsteady integrated forces and moments acting on the store. Spectra of the forces and moments, along with correlations calculated for force/moment pairs, reveal that a complex relationship exists between the unsteady integrated forces and the measured resonant cavity modes, as indicated in the cavity wall pressure measurements. As a result, the structure of identified cavity resonant tones is examined by visualization of filtered surface pressure fields.
Authors:
 [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
OSTI Identifier:
1333865
Report Number(s):
SAND--2015-2523J
Journal ID: ISSN 0021-8669; 579847
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Journal of Aircraft
Additional Journal Information:
Journal Volume: 53; Journal Issue: 4; Journal ID: ISSN 0021-8669
Publisher:
American Institute of Aeronautics and Astronautics (AIAA)
Research Org:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING