Development And Characterization Of A Turbulence Generator For Low-Speed Wind Tunnel Applications

Abstract

A novel turbulence generator is developed for use with a low speed wind tunnel. The turbulence generator is designed to provide varying levels of turbulence for the experimental study of various flame regimes of premixed turbulent combustion. These regimes include: the wrinkled and corrugated flamelet regimes, the thin reaction zone, and the broken reaction zone. The turbulence is induced by combining a passive grid-based method and active air jet impingement method, allowing for each of these conditions to be achieved with a single design. Turbulent characteristics are determined using hotwire anemometry and validated using particle imaging velocimetry (PIV). Results indicate that the turbulence generator can produce turbulence intensities in excess of 50% of bulk inflow velocity. Other turbulence characteristics, such as length scales, downstream decay and the energy density spectrum are similarly investigated for the non-reacting flow-field.

Publication Date

1-1-2017

Publication Title

53rd AIAA/SAE/ASEE Joint Propulsion Conference, 2017

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2017-4966

Socpus ID

85086949030 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85086949030

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