19
Views
1
CrossRef citations to date
0
Altmetric
Original Articles

Turbulent Characteristics of Flame Propagation in a Swirling Flow of Premixed Fuel and Air

&
Pages 275-294 | Received 20 Oct 1987, Published online: 06 Apr 2007
 

Abstract

Flame propagation in swirling flow in a constant–volume chamber with premixed fuel and air has been studied with flame photography and pressure measurement. The entrainment velocity has been calculated by two methods. The first utilizes photographic records to determine flame front propagation rate. From this rate is subtracted the local velocity of the unburned gas (inferred from pressure measurements). The second method utilizes an estimate of the mass entrainment rate inferred from the observed rate of reduction of unburned gas volume, and from pressure measurements. The unsteady velocity signal obtained with a hot wire anemometer has been used with a peak–to–peak counting technique to estimate the micro time and microlength scales of the turbulence and the Taylor rnicrolength scale in the decaying swirling flow in the absence of combustion. Comparison is made with microlength scale calculated using a turbulent entrainment model based on Tennekes turbulence model.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.