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
Personal Author(s):
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
Descriptors:
- *MATHEMATICAL MODELS
- *REACTION KINETICS
- *COMBUSTION
- *COMBUSTORS
- *GAS TURBINES
- ALGORITHMS
- VOLUME
- WATER FLOW
- SCALE MODELS
- NETWORKS
- SIGNAL TO NOISE RATIO
- TURBULENT FLOW
- MATHEMATICAL ANALYSIS
- COMBUSTION CHAMBERS
- MIXING
- IMPULSE NOISE
- SALTS
- DISCRETE FOURIER TRANSFORMS
- THREE DIMENSIONAL FLOW
- TRACER STUDIES
- CONDUCTIVE LIQUIDS
- RESEARCH REACTORS
Subject Categories:
- Theoretical Mathematics
- Hydraulic and Pneumatic Equipment
- Fluid Mechanics
- Combustion and Ignition