Accession Number:

ADA101084

Title:

Pseudo Random Stimulus Response of Combustion Systems.

Descriptive Note:

Interim rept.,

Corporate Author:

SHEFFIELD UNIV (ENGLAND) DEPT OF CHEMICAL ENGINEERING AND FUEL TECHNOLOGY

Report Date:

1980-01-01

Pagination or Media Count:

33.0

Abstract:

Combustor modelling methods involving stirred reactor networks require information on the volumes, inter-connections, mixedness and flowrates of the individual reactors. It is here proposed that the response of the system to a pseudo-random binary sequence PRBS stimulus can be used advantageously to fulfill this need. A survey is presented of the theory of the technique and method of interpretation of the results. The practicability of the method has been invesitgated experimentally using a water model of a gas turbine combustor salt solution tracer was introduced into the primary flow in a PRBS and the conductivity at different points throughout the chamber was used to determine the impulse response and Z-transform. The results confirmed the anticipated sensitivity of the technique. Finally, the extension of the technique to the quantitative identification of non-linear elements is presented. Author

Subject Categories:

  • Theoretical Mathematics
  • Hydraulic and Pneumatic Equipment
  • Fluid Mechanics
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE