A Numerical Investigation of the Startup Transient in a Wave RotorSource: Journal of Engineering for Gas Turbines and Power:;1997:;volume( 119 ):;issue: 003::page 676Author:D. E. Paxson
DOI: 10.1115/1.2817039Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The startup process is investigated for a hypothetical four-port wave rotor, envisioned as a topping cycle for a small gas turbine engine. The investigation is conducted numerically using a multi-passage, one-dimensional CFD based wave rotor simulation in combination with lumped volume models for the combustor, exhaust valve plenum, and rotor center cavity components. The simulation is described and several startup transients are presented which illustrate potential difficulties for the specific cycle design investigated. In particular it is observed that, prior to combustor light-off, or just after, the flow through the combustor loop is reversed from the design direction. The phenomenon is demonstrated and several possible modification techniques are discussed that avoid or overcome the problem.
keyword(s): Waves , Rotors , Combustion chambers , Simulation , Design , Cycles , Exhaust systems , Gas turbines , Valves , Cavities , Flow (Dynamics) AND Computational fluid dynamics ,
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| contributor author | D. E. Paxson | |
| date accessioned | 2017-05-08T23:53:25Z | |
| date available | 2017-05-08T23:53:25Z | |
| date copyright | July, 1997 | |
| date issued | 1997 | |
| identifier issn | 1528-8919 | |
| identifier other | JETPEZ-26766#676_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/118666 | |
| description abstract | The startup process is investigated for a hypothetical four-port wave rotor, envisioned as a topping cycle for a small gas turbine engine. The investigation is conducted numerically using a multi-passage, one-dimensional CFD based wave rotor simulation in combination with lumped volume models for the combustor, exhaust valve plenum, and rotor center cavity components. The simulation is described and several startup transients are presented which illustrate potential difficulties for the specific cycle design investigated. In particular it is observed that, prior to combustor light-off, or just after, the flow through the combustor loop is reversed from the design direction. The phenomenon is demonstrated and several possible modification techniques are discussed that avoid or overcome the problem. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | A Numerical Investigation of the Startup Transient in a Wave Rotor | |
| type | Journal Paper | |
| journal volume | 119 | |
| journal issue | 3 | |
| journal title | Journal of Engineering for Gas Turbines and Power | |
| identifier doi | 10.1115/1.2817039 | |
| journal fristpage | 676 | |
| journal lastpage | 682 | |
| identifier eissn | 0742-4795 | |
| keywords | Waves | |
| keywords | Rotors | |
| keywords | Combustion chambers | |
| keywords | Simulation | |
| keywords | Design | |
| keywords | Cycles | |
| keywords | Exhaust systems | |
| keywords | Gas turbines | |
| keywords | Valves | |
| keywords | Cavities | |
| keywords | Flow (Dynamics) AND Computational fluid dynamics | |
| tree | Journal of Engineering for Gas Turbines and Power:;1997:;volume( 119 ):;issue: 003 | |
| contenttype | Fulltext |