A unique methodology is used to investigate the effects of gravity on fuel flowing through the small-bore heated tubes that are often used in the study of fuel-thermal-stability characteristics. The copper block that houses the fuel tube (or test section) is located on a swivel, and experiments are conducted for different tube orientations namely; horizontal, vertical with flow from bottom to top and vice versa. Results obtained for different fuel-flow rates and block temperatures are discussed. An axisymmetric, time-dependent numerical model is used to simulate the flow patterns in the test section. This model solves momentum, energy, species and k-ε turbulence equations. The buoyancy term is included in the axial-momentum equation. Natural flow resulting from buoyancy was found to have a significant effect on heat transfer and oxygen consumption for fuel-flow rates up to 100 cc/min (Reynolds numbers up to 2300). Flow instabilities were observed when the fuel was flowing downward in a vertically mounted test section. The effect of block temperature and flow rate on these instabilities was also studied.
Skip Nav Destination
ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition
June 13–16, 1994
The Hague, Netherlands
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7885-9
PROCEEDINGS PAPER
Effects of Buoyancy on Heat Transfer and Oxygen Consumption in Fuel-Thermal-Stability Studies Free
Viswanath R. Katta,
Viswanath R. Katta
Systems Research Laboratories, Inc., Dayton, OH
Search for other works by this author on:
James W. Blust,
James W. Blust
University of Dayton Research Institute, Dayton, OH
Search for other works by this author on:
Theodore F. Williams,
Theodore F. Williams
University of Dayton Research Institute, Dayton, OH
Search for other works by this author on:
Charles R. Martel
Charles R. Martel
University of Dayton Research Institute, Dayton, OH
Search for other works by this author on:
Viswanath R. Katta
Systems Research Laboratories, Inc., Dayton, OH
James W. Blust
University of Dayton Research Institute, Dayton, OH
Theodore F. Williams
University of Dayton Research Institute, Dayton, OH
Charles R. Martel
University of Dayton Research Institute, Dayton, OH
Paper No:
94-GT-262, V003T06A017; 11 pages
Published Online:
February 18, 2015
Citation
Katta, VR, Blust, JW, Williams, TF, & Martel, CR. "Effects of Buoyancy on Heat Transfer and Oxygen Consumption in Fuel-Thermal-Stability Studies." Proceedings of the ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations. The Hague, Netherlands. June 13–16, 1994. V003T06A017. ASME. https://doi.org/10.1115/94-GT-262
Download citation file:
145
Views
Related Proceedings Papers
Related Articles
The Dynamics of Two-Dimensional Buoyancy Driven Convection in a Horizontal Rotating Cylinder
J. Heat Transfer (December,2004)
Flow Instability Investigation at Supercritical Pressures in Parallel Channels by Computational Fluid Dynamics Adopting Low- and High-Power Boundaries
ASME J of Nuclear Rad Sci (January,2021)
Related Chapters
Laminar Fluid Flow and Heat Transfer
Applications of Mathematical Heat Transfer and Fluid Flow Models in Engineering and Medicine
Antilock-Braking System Using Fuzzy Logic
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Numerical Simulation Research on a Fixed Bed Gasifier
International Conference on Information Technology and Management Engineering (ITME 2011)