Aerothermodynamics in Combustors

Lee, Richard S. L.; Whitelaw, J. H.; Wung, T. S.

doi:10.1007/978-3-642-84755-4

Cited by 2 publications

(2 citation statements)

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“…The governing equations for the airflow in the combustor were proposed by Fukue et al (1) The commercial software STAR-CD, a model for simulating turbulence, allows various scenarios in practical application. Although its accuracy is low due to strong numerical diffusion, it is possible to obtain a convergent solution for a combustor design.…”

Section: Resultsmentioning

confidence: 99%

“…As they are chemically synthesized, LHVFs include impurities such as carbon particles and H 2 S. There are many kinds of LHVFs such as biomass, organic gases, and synthesized gases. (1) As LHVFs have less effect on global warming, there have been many efforts to replace fossil fuels with LHVFs. Consonni and Larson reported that around 10% of the total electricity of the USA is provided from power generation units using LHVFs.…”

Section: Introductionmentioning

confidence: 99%

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Combustion of Low-heating-value Fuel in Combustor of Gas Turbine with Swirler

Leu¹,

Chang²,

Lan³

et al. 2021

Sensors and Materials

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As the concern about environmental problems and overuse of fossil fuels increases, alternative fuels with low heating values have been gaining much attention. Combusting the fuels requires modified gas turbines in terms of design and operation parameters. In this study, we aim to find appropriate parameters for designing gas turbines that combust low-heating-value fuels (LHVFs) through computer simulation. The results indicate that the jet penetration depth, inlet gas coefficient, and jet flow direction in the wall jet inlet require adjustment in the combustor design. The simulation shows that a pair of small vortices form in the front of the dome region. The length of the recirculation flow is only 0.18D (D: inlet diameter of the combustor), which does not significantly affect the flame-holding ability. The results also reveal that the strength and size of the recirculation flow in the primary combustion zone must be increased as the center of the flow moves to the liner wall. The high-temperature zone must also be close to the liner, and the center of the recirculation flow must be close to the liner wall. As a result, the combustion efficiency of LHVFs in the newly designed combustor is improved by 47% from that of a conventional combustor. The results of this study are expected to lead to new innovative designs of combustors of LHVFs that save resources and reduce pollutant emission.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%