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Title: Method and apparatus for the control of fluid dynamic mixing in pulse combustors

Abstract

In a method and apparatus for controlling total ignition delay time in a pulse combustor, and thus controlling the mixing characteristics of the combustion reactants and the combustion products in the combustor, the total ignition delay time is controlled by adjusting the inlet geometry of the inlet to the combustion chamber. The inlet geometry may be fixed or variable for controlling the mixing characteristics. A feedback loop may be employed to sense actual combustion characteristics, and, in response to the sensed combustion characteristics, the inlet geometry may be varied to obtain the total ignition delay time necessary to achieve the desired combustion characteristics. Various embodiments relate to the varying of the mass flow rate of reactants while holding the radius/velocity ratio constant.

Inventors:
 [1];  [2]
  1. (San Ramon, CA)
  2. (Oakland, CA)
Issue Date:
Research Org.:
AT & T CORP
OSTI Identifier:
868320
Patent Number(s):
5118281
Application Number:
07/497,004
Assignee:
United States of America as represented by United States (Washington, DC) SNL
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; control; fluid; dynamic; mixing; pulse; combustors; controlling; total; ignition; delay; time; combustor; characteristics; combustion; reactants; products; controlled; adjusting; inlet; geometry; chamber; fixed; variable; feedback; loop; employed; sense; response; sensed; varied; obtain; achieve; desired; various; embodiments; relate; varying; mass; flow; rate; holding; radius; velocity; ratio; constant; feedback loop; various embodiments; mass flow; combustion products; combustion chamber; flow rate; delay time; combustion product; pulse combustor; fluid dynamic; /431/60/

Citation Formats

Bramlette, T. Tazwell, and Keller, Jay O. Method and apparatus for the control of fluid dynamic mixing in pulse combustors. United States: N. p., 1992. Web.
Bramlette, T. Tazwell, & Keller, Jay O. Method and apparatus for the control of fluid dynamic mixing in pulse combustors. United States.
Bramlette, T. Tazwell, and Keller, Jay O. Tue . "Method and apparatus for the control of fluid dynamic mixing in pulse combustors". United States. https://www.osti.gov/servlets/purl/868320.
@article{osti_868320,
title = {Method and apparatus for the control of fluid dynamic mixing in pulse combustors},
author = {Bramlette, T. Tazwell and Keller, Jay O.},
abstractNote = {In a method and apparatus for controlling total ignition delay time in a pulse combustor, and thus controlling the mixing characteristics of the combustion reactants and the combustion products in the combustor, the total ignition delay time is controlled by adjusting the inlet geometry of the inlet to the combustion chamber. The inlet geometry may be fixed or variable for controlling the mixing characteristics. A feedback loop may be employed to sense actual combustion characteristics, and, in response to the sensed combustion characteristics, the inlet geometry may be varied to obtain the total ignition delay time necessary to achieve the desired combustion characteristics. Various embodiments relate to the varying of the mass flow rate of reactants while holding the radius/velocity ratio constant.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {6}
}

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