Author: A. S. NovickPublisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 9
Book Description
Modeling Parameter Influences in Gas Turbine Combustor Design
Author: A. S. NovickPublisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 9
Book Description
A Critical Evaluation of Various Turbulence Models as Applied to Internal Fluid Flows
Author: M. NallasamyPublisher:
ISBN:
Category : Computational fluid dynamics
Languages : en
Pages : 80
Book Description
Combustor Modelling
Author: Publisher:
ISBN:
Category : Aircraft gas-turbines
Languages : en
Pages : 406
Book Description
NASA Technical Paper
Author: Modelling of Furnaces and Combustors
Author: E. E. KhalilPublisher: Routledge
ISBN:
Category : Mathematics
Languages : en
Pages : 290
Book Description
The Aerothermodynamics of Aircraft Gas Turbine Engines
Author: Flowfield Modeling and Diagnostics
Author: Ashwani K. GuptaPublisher: Taylor & Francis
ISBN: 9780856263286
Category : Crafts & Hobbies
Languages : en
Pages : 426
Book Description
First published in 2004. Routledge is an imprint of Taylor & Francis, an informa company.
Combustion Noise
Author: Anna SchwarzPublisher: Springer Science & Business Media
ISBN: 3642020380
Category : Technology & Engineering
Languages : en
Pages : 304
Book Description
November, 2008 Anna Schwarz, Johannes Janicka In the last thirty years noise emission has developed into a topic of increasing importance to society and economy. In ?elds such as air, road and rail traf?c, the control of noise emissions and development of associated noise-reduction techno- gies is a central requirement for social acceptance and economical competitiveness. The noise emission of combustion systems is a major part of the task of noise - duction. The following aspects motivate research: • Modern combustion chambers in technical combustion systems with low pol- tion exhausts are 5 - 8 dB louder compared to their predecessors. In the ope- tional state the noise pressure levels achieved can even be 10-15 dB louder. • High capacity torches in the chemical industry are usually placed at ground level because of the reasons of noise emissions instead of being placed at a height suitable for safety and security. • For airplanes the combustion emissions become a more and more important topic. The combustion instability and noise issues are one major obstacle for the introduction of green technologies as lean fuel combustion and premixed burners in aero-engines. The direct and indirect contribution of combustion noise to the overall core noise is still under discussion. However, it is clear that the core noise besides the fan tone will become an important noise source in future aero-engine designs. To further reduce the jet noise, geared ultra high bypass ratio fans are driven by only a few highly loaded turbine stages.
A Physics-based Emissions Model for Aircraft Gas Turbine Combustors
Author: Douglas L. AllairePublisher:
ISBN:
Category :
Languages : en
Pages : 105
Book Description
In this thesis, a physics-based model of an aircraft gas turbine combustor is developed for predicting NO. and CO emissions. The objective of the model is to predict the emissions of current and potential future gas turbine engines within quantified uncertainty bounds for the purpose of assessing design tradeoffs and interdependencies in a policy-making setting. The approach taken is to capture the physical relationships among operating conditions, combustor design parameters, and pollutant emissions. The model is developed using only high-level combustor design parameters and ideal reactors. The predictive capability of the model is assessed by comparing model estimates of NO, and CO emissions from five different industry combustors to certification data. The model developed in this work correctly captures the physical relationships between engine operating conditions, combustor design parameters, and NO. and CO emissions. The NO. estimates are as good as, or better than, the NO. estimates from an established empirical model; and the CO estimates are within the uncertainty in the certification data at most of the important low power operating conditions.
Flow and Combustion in Advanced Gas Turbine Combustors
Author: Johannes JanickaPublisher: Springer Science & Business Media
ISBN: 9400753209
Category : Technology & Engineering
Languages : en
Pages : 495
Book Description
With regard to both the environmental sustainability and operating efficiency demands, modern combustion research has to face two main objectives, the optimization of combustion efficiency and the reduction of pollutants. This book reports on the combustion research activities carried out within the Collaborative Research Center (SFB) 568 “Flow and Combustion in Future Gas Turbine Combustion Chambers” funded by the German Research Foundation (DFG). This aimed at designing a completely integrated modeling and numerical simulation of the occurring very complex, coupled and interacting physico-chemical processes, such as turbulent heat and mass transport, single or multi-phase flows phenomena, chemical reactions/combustion and radiation, able to support the development of advanced gas turbine chamber concepts