Lean gas turbine combustion instability and control is currently a subject of interest for many researchers. The motivation for running gas turbines lean is to reduce NOx emissions. For this reason gas turbine combustors are being design using the Lean Premixed Prevaporized (LPP) concept. In this concept, the liquid fuel must first be atomized, vaporized and thoroughly premixed with the oxidizer before it enters the combustion chamber. One problem that is associated with running gas turbines lean and premixed is that they are prone to combustion instability. The matrix burner test rig at the Institute of Steam and Gas Turbines at the RWTH Aachen University is no exception. This matrix burner is suitable for simulating the conditions prevailing in stationary gas turbines. Till now this burner could handle only gaseous fuel injection. It is important for gas turbines in operation to be able to handle both gaseous and liquid fuels though. This paper reports the modification of this test rig in order for it to be able to handle both gaseous and liquid primary fuels. Many design issues like the number and position of injectors, the spray angle, nozzle type, droplet size distribution, etc. were considered. Starting with the determination of the spray cone angle from measurements, CFD was used in the initial design to determine the optimum position and number of injectors from cold flow simulations. This was followed by hot flow simulations to determine the dynamic behavior of the flame first without any forcing at the air inlet and with forcing at the air inlet. The effect of the forcing on the atomization is determined and discussed.
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ASME Turbo Expo 2009: Power for Land, Sea, and Air
June 8–12, 2009
Orlando, Florida, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4883-8
PROCEEDINGS PAPER
Experimental and Numerical Studies of Diesel Spray Evaporation and Combustion in a Gas Turbine Matrix Burner Available to Purchase
Dieter Bohn,
Dieter Bohn
RWTH Aachen University, Aachen, Germany
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James F. Willie,
James F. Willie
RWTH Aachen University, Aachen, Germany
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Nils Ohlendorf
Nils Ohlendorf
RWTH Aachen University, Aachen, Germany
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Dieter Bohn
RWTH Aachen University, Aachen, Germany
James F. Willie
RWTH Aachen University, Aachen, Germany
Nils Ohlendorf
RWTH Aachen University, Aachen, Germany
Paper No:
GT2009-59348, pp. 287-298; 12 pages
Published Online:
February 16, 2010
Citation
Bohn, D, Willie, JF, & Ohlendorf, N. "Experimental and Numerical Studies of Diesel Spray Evaporation and Combustion in a Gas Turbine Matrix Burner." Proceedings of the ASME Turbo Expo 2009: Power for Land, Sea, and Air. Volume 2: Combustion, Fuels and Emissions. Orlando, Florida, USA. June 8–12, 2009. pp. 287-298. ASME. https://doi.org/10.1115/GT2009-59348
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