Development of a vortexing combustor (VC) for space/water heating applications (cold flow modeling)

Technical Report · Mon Aug 01 04:00:00 EDT 1988

DOI:https://doi.org/10.2172/6858688· OSTI ID:6858688

Nieh, S

A series of measurements of the gas flow field was conducted on the full-scale Vortex Combustor (VC) model. A number of influencing factors, both configurational and operational, were studied and their effects on the aerodynamic structure in the VC test chamber were delineated. Test results showed that aerodynamics favorable for the initiation of fuel ignition and char burnout can be achieved in VC chambers. Visualization tests of particle flow on the bench-scale model demonstrated that particle behaviors in the VC chamber can be controlled aerodynamically. The test results and operational experience are deemed highly valuable for VC combustor design. In the aspect of mathematical modeling, computations of the particle flow field with the newly developed statistic-trajectory model have been made based on solved gas flow field in VC processes. The interaction of gas flow field and particle flow field in terms of gas-particle slip velocity was identified. Large gas-particle slip velocities obtained in the VC chamber are highly favorable for the combustion processes. 5 refs., 16 figs., 4 tabs.

• Research Organization: Catholic Univ. of America, Washington, DC (USA). Dept. of Mechanical Engineering
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-87PC79661
• OSTI ID: 6858688
• Report Number(s): DOE/PC/79661-T3; ON: DE90014601
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106 -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
AERODYNAMICS
BENCH-SCALE EXPERIMENTS
COMBUSTORS
DESIGN
DOCUMENT TYPES
FLUID FLOW
FLUID MECHANICS
HEATING
MATHEMATICAL MODELS
MECHANICS
PROGRESS REPORT
SPACE HEATING
TESTING
VORTEX FLOW
WATER HEATING