Article citationsMore>>
Epstein, A.H., Senturia, S.D., Anathasuresh, G., Ayon, A., Breuer, K., Chen, K-S, Ehrich, F.E., Gauba, G., Ghodssi, R., Groshenry, C., Jacobson, S., Lang, J.H., Lin, C.-C., Mehra, A., Mur Miranda, J.O., Nagle, S., Orr, D.J., Piekos, E., Schmidt, M.A., Shirley, G., Spearing, S.M., Tan, C.S., Tzeng, Y.-S. and Waitz, I.A. (1997) Power MEMS and Microengines. Proceedings of IEEE Transducers '97 Conference, Chicago, June 1997.
has been cited by the following article:
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TITLE:
Design Optimization of a Micro-Combustor for Lean, Premixed Fuel-Air Mixtures
AUTHORS:
Leigh T. Powell, Ralph C. Aldredge
KEYWORDS:
Micro-Combustor, Combustion, Computational Fluid Dynamics, Ethane, Efficiency
JOURNAL NAME:
Journal of Power and Energy Engineering,
Vol.4 No.6,
June
30,
2016
ABSTRACT: Present technology has been shifting towards miniaturization of devices for energy production for portable electronics. Micro-combustors, when incorporated into a micro-power generation system, create the energy desired in the form of hot gases to power such technology. This creates the need for a design optimization of the micro-combustor in terms of geometry, fuel choice, and material selection. A total of five micro-combustor geometries, three fuels, and three materials were computationally simulated in different configurations in order to determine the optimal micro-combustor design for highest efficiency. Inlet velocity, equivalence ratio, and wall heat transfer coefficient were varied in order to test a comprehensive range of micro-combustor parameters. All simulations completed for the optimization study used ANSYS Fluent v16.1 and post-processing of the data was done in CFD Post v16.1. It was found that for lean, premixed fuel-air mixtures (φ = 0.6 - 0.9) ethane (C2H6) provided the highest flame temperatures when ignited within the micro-combustor geometries. An aluminum oxide converging micro-combustor burning ethane and air at an equivalence ratio of 0.9, an inlet velocity of 0.5 m/s, and heat transfer coefficient of 5 W/m2-K was found to produce the highest combustor efficiency, making it the optimal choice for a micro-combustor design. It is proposed that this geometry be experimentally and computationally investigated further in order to determine if additional optimization can be achieved.
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