Cold flow modeling of pulverized coal combustors for magnetohydrodynamic channel applications

Technical Report · Thu Mar 01 04:00:00 EST 1984

DOI:https://doi.org/10.2172/5260949· OSTI ID:5260949

Schulz, R. J.; Giel, T. V.; Ghosh, A.; Morris, R. D.

This report describes an experimental program and techniques for studying the internal aerodynamics of pulverized coal combustors of the type used in magnetohydrodynamic test trains at The University of Tennessee Space Institute. The combustors are modeled with small scale, cold flow models that permit both flow visualization and velocity field surveys to be performed. Water was selected as the working fluid so that the model flow fields had the same Reynolds number as the actual reactive combustors, and also to facilitate flow visualization. The systems used for flow visualization and velocity field surveying are described in detail. The velocity field survey equipment is based on a vector-velocity, laser doppler velocimeter coupled to a controllable field scanning device and a microprocessor for on-line data reduction. Results are presented that were obtained from a laser velocimeter study of recirculating flows in a combustor model. The results show that, even for exceedingly simple geometrical arrangements of oxidant injector configurations, complex three dimensional highly turbulent flow fields exist in the combustor. A brief discussion of the impact of the results on fuel injector positioning is presented.

• Research Organization: Tennessee Univ., Tullahoma (USA). Space Inst.
• DOE Contract Number: AC02-79ET10815
• OSTI ID: 5260949
• Report Number(s): DOE/ET/10815-74; UTSI-82-18; ON: DE84008052
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
300103* -- MHD Generators-- Materials
Components
& Auxiliaries
AERODYNAMICS
COAL FINES
COAL-FIRED MHD GENERATORS
COMBUSTORS
DIRECT ENERGY CONVERTERS
FLOW MODELS
FLUID FLOW
FLUID MECHANICS
LASERS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICS
MHD GENERATORS
TURBULENT FLOW
VELOCIMETERS
VELOCITY