Vortex shedding of various bluff bodies in cross flow

Christopher J. Ruscher, John Francis Dannenhoffer, Mark N. Glauser, Barry V. Kiel, Balu Sekar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The generation of noise in combusting jets is of crucial concern in both military and commercial applications. In order to understand the impact of combustion on the noise generation mechanism, one needs to understand the flow structures. Since the flame structures that are observed experimentally are similar to the flow structures behind a cylinder for a non-combusting flow, a detailed comparison of these is warranted. A large eddy simulation (LES) of a cylinder in a cross flow was performed at different Reynolds numbers to compare the relationship between vortex shedding at various Reynolds numbers with the flame structures at different equivalence ratios. This is done to determine if the proposed analogy is valid. Proper orthogonal decomposition (POD) is performed on the non-combusting flow field and the luminosity of the combusting flow to compare how much energy is contained in symmetric, asymmetric, and uncorrelated modes. The initial study suggests an analogy between Reynolds number and equivalence ratio does not exist in terms of symmetric/asymmetric modal energy distribution despite the visual similarities between the two phenomena.

Original languageEnglish (US)
Title of host publication48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869358
DOIs
StatePublished - 2012
Event48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012 - Atlanta, GA, United States
Duration: Jul 30 2012Aug 1 2012

Publication series

Name48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012

Other

Other48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012
CountryUnited States
CityAtlanta, GA
Period7/30/128/1/12

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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    Ruscher, C. J., Dannenhoffer, J. F., Glauser, M. N., Kiel, B. V., & Sekar, B. (2012). Vortex shedding of various bluff bodies in cross flow. In 48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012 (48th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit 2012). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2012-4285