Second Paper: Instantaneous Heat Transfer Rates to the Cylinder Head Surface of a Small Compression-Ignition Engine

Annand, W. J. D.; H., T.

doi:10.1243/pime_proc_1970_185_110_02

Cited by 143 publications

(63 citation statements)

References 6 publications

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“…) are reported in the literature on internal combustion engines [26] [27]. The variations of these parameters result in substantial changes in the average gas temperature and hence in the sound speed.…”

Section: Measurements Of Intake Air Flow Velocitymentioning

confidence: 99%

An Efficient Numerical Model of Pulsating Combustion and Its Experimental Validation

Casarsa

Giannattasio

Micheli

2009

Volume 3: Combustion Science and Engineering

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A simple and efficient numerical model is presented for the simulation of pulse combustors. It is based on the numerical solution of the quasi-1D unsteady flow equations and on phenomenological sub-models of turbulence and combustion. The gas dynamics equations are solved by using the Flux Difference Splitting (FDS) technique, a finite-volume upwind numerical scheme, and ENO reconstructions to obtain secondorder accurate non-oscillatory solutions. The numerical fluxes computed at the cell interfaces are used to transport also the reacting species, their formation energy and the turbulent kinetic energy. The combustion progress in each cell is evaluated explicitly at the end of each time step according to a second-order overall reaction kinetics. In this way, the computations of gas dynamic evolution and heat release are decoupled, which makes the model particularly simple and efficient. A comprehensive set of measurements has been performed on a small Helmholtz type pulse-jet in order to validate the model. Air and fuel consumptions, wall temperatures, pressure cycles in both combustion chamber and tail-pipe, and instantaneous thrust have been recorded in different operating conditions of the device. The comparison between numerical and experimental results turns out to be satisfactory in all the working conditions of the pulse-jet. In particular, accurate predictions are obtained of the device operating frequency and of shape, amplitude and phase of the pressure waves in both combustion chamber and tail-pipe.

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Section: Measurements Of Intake Air Flow Velocitymentioning

confidence: 99%

An Efficient Numerical Model of Pulsating Combustion and Its Experimental Validation

Casarsa

Giannattasio

Micheli

2009

Volume 3: Combustion Science and Engineering

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“…De maneira geral para a estimativa das trocas de calor, dois modelos são mais difundidos, sendo eles os modelos propostos por Annand (1970Annand ( -1971 [7] e Woschni (1967) [8].…”

Section: Trocas Térmicasunclassified

Análise Termodinâmica De Motores De Combustão Interna De Tipo Alternativo Usando Um Modelo Quasi-Dimensional

Tonon¹,

Garcia²

2017

Blucher Engineering Proceedings

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RESUMOO uso de simulações para a predição do comportamento de determinados mecanismos está cada vez mais difundido na indústria automobilística, uma vez que ensaios experimentais possuem um custo muito mais elevado. Dentre todos os mecanismos que compõem um automóvel o motor merece um destaque especial, já que este é responsável pela geração de potência e é através dele que o veículo iniciará o seu movimento. Com o passar do tempo o projeto desse mecanismo precisou evoluir consideravelmente se comparado com os primeiros automóveis fabricados na história, devido as exigências de âmbito social e ecológico. Dessa forma, é de fundamental importância que as montadoras avaliem o comportamento do motor em toda a sua faixa de operação, e essa avaliação pode ser feita através de diferentes modelos numéricos. Atualmente os modelos mais difundidos para a simulação desses mecanismos são modelos Single-Zone, Multi-Zone e Multi-Dimensional. O presente trabalho faz uma análise comparativa entre dados experimentais e resultados obtidos através de simulações de motores de combustão interna, utilizando um modelo Multi-Zone de tipo Quasi-Dimensional. O modelo apresentado nesse trabalho ainda está em fase de desenvolvimento, porém já demonstra um grande potencial nas análises de desempenho. NOMENCLATURA T: temperatura

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“…Several models exist for evaluating the heat transfer coefficient, of which the correlations of [2] and [3] are the most widely used. The heat transfer involved in the intake system occurs when air or an air-fuel mixture enter into the manifold.…”

Section: Introductionmentioning

confidence: 99%

Power generation from waste of IC engines

Rahman¹,

Razzak²,

Afroz

et al. 2015

Renewable and Sustainable Energy Reviews

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Second Paper: Instantaneous Heat Transfer Rates to the Cylinder Head Surface of a Small Compression-Ignition Engine

Cited by 143 publications

References 6 publications

An Efficient Numerical Model of Pulsating Combustion and Its Experimental Validation

An Efficient Numerical Model of Pulsating Combustion and Its Experimental Validation

Análise Termodinâmica De Motores De Combustão Interna De Tipo Alternativo Usando Um Modelo Quasi-Dimensional

Power generation from waste of IC engines

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