Numerical simulation of hydrogen combustion process in rotary engine with laser ignition system

Zambalov, Sergey; Yakovlev, Igor; Skripnyak, Vladimir A.

doi:10.1016/j.ijhydene.2017.05.142

Cited by 78 publications

(12 citation statements)

References 37 publications

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“…35 Precisely because of the above reason, RNG k − ε turbulence model has been widely considered to be able to meet the needs of flow field calculation of rotary engine. 7,10,25,28 Engine technical specifications.…”

Section: Boundary Conditions Turbulence Model Selection and Modelmentioning

confidence: 99%

“…It is undeniable that the development of rotary engines is severely restricted by its combustion efficiency and emission 7 . One of the important reasons is that the flame propagation velocity of the mixture at the back of the combustion chamber (CC) is too slow 8 .…”

Section: Introductionmentioning

confidence: 99%

“…It is undeniable that the development of rotary engines is severely restricted by its combustion efficiency and emission. 7 One of the important reasons is that the flame propagation velocity of the mixture at the back of the combustion chamber (CC) is too slow. 8 This is principally because during the combustion stroke, the shape of the CC is long and narrow, which leads to the fact that the flow pattern in the CC is a unidirectional flow.…”

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confidence: 99%

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The formation mechanisms of flow field in a compound intake ported rotary engine considering apex seal leakage

Fan

Zhang

Pan

et al. 2020

Env Prog and Sustain Energy

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The development of rotary engines is severely restricted by its low combustion efficiency and high emission. In-cylinder flow field is known to play a major role in combustion process for rotary engines. Therefore, in the present article, a threedimensional dynamic simulation model considering leakage through apex seals was developed and verified by the two-dimensional particle image velocimetry experiment results on the rotor housing central plane. Based on the three-dimensional dynamic simulation model, the formation mechanisms of flow field in a compound intake ported rotary engine under different apex seal leakage gap sizes (0.02, 0.04, 0.06, and 0.08 mms) and engine speeds (2,000, 3,500, and 5,000 rpms) were numerically studied. The simulation results showed that there exist two formation mechanisms of the flow field in the intake stroke, that is, "side intake port dominance" and "peripheral intake port dominance." For the three engine speeds (2,000, 3,500, and 5,000 rpms), with the increase of apex seal leakage gap size, the formation mechanism of the flow field gradually changed from "side intake port dominance" to "peripheral intake port dominance." In addition, the influences of apex seal leakage on the volume coefficient and the turbulence kinetic energy in the combustion chamber were also investigated in detail. K E Y W O R D S apex seal leakage, compound intake port, flow field, rotary engine 1 | INTRODUCTION With the increasingly serious energy crisis and environmental problems, it is urgent to develop new types of engines that have higher efficiency and lower pollution. 1,2 As a new type of engine, with simple structure and high power-to-weight ratio, rotary engines have been widely used in many fields, such as aircraft, cars and motorcycles for many years. 3 In particular, the rapid development of small unmanned aerial vehicles (SUAVs) and range extended electric vehicles (REEVs) in recent years has provided new opportunities for rotary engines. This is mainly because SUAVs and REEVs need a small size and high power-to-weight power device, and rotary engines can well meet the above requirements. 4 For example, a range extender with a rotary engine designed by AVL List GmbH is regarded as one of the most promising power generation mode for REEVs. 5 Because of the above promising application prospects, the investigation, and development of rotary engines have attracted more and more attention from many countries and research institutions. 6

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Section: Boundary Conditions Turbulence Model Selection and Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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The formation mechanisms of flow field in a compound intake ported rotary engine considering apex seal leakage

Fan

Zhang

Pan

et al. 2020

Env Prog and Sustain Energy

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“…Zambalov et al . used ANSYS Fluent software to simulate a hydrogen‐fueled rotary engine with laser ignition system and achieved high engine efficiency and almost zero carbon‐based emission. Pan et al .…”

Section: Introductionmentioning

confidence: 99%

“…Rose et al [11] designed a new multi-apex-seal grid assembly which improves sealing capability and also reduces the forces on the apex seals. Zambalov et al [12] used ANSYS Fluent software to simulate a hydrogen-fueled rotary engine with laser ignition system and achieved high engine efficiency and almost zero carbon-based emission. Pan et al [13] focused on the numerical simulation of the air-powered rotary engine and investigated how intake and exhaust timing affects the performance of the air-powered rotary engine.…”

Section: Introductionmentioning

confidence: 99%

Effect of different hydrogen blending ratios on combustion process of gasoline‐fueled rotary engine

Pan

Huang

et al. 2019

Env Prog and Sustain Energy

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The pre‐eminent gasoline rotary engine may be criticized for its unsatisfactory fuel consumption rate and unburnt emissions. The clean and renewable hydrogen fuel is a promising alternative for conventional fuels to improve the combustion process and power performance of the rotary engine. In this article, highly advanced numerical simulation was used to obtain some pivotal results such as the distribution of combustion intermediates, the turbulent kinetic energy, the kinetic rate of reactions, and the fuel concentration fields which are difficult to experimentally achieve. An experimentally validated three‐dimensional dynamic simulation model of a rotary engine coupled with chemical kinetics skeletal mechanism was set up to exactly investigate the effects of hydrogen blending on the combustion process, power performance, and pollutant emissions. The results showed that with the increase of hydrogen mixing ratio, the average pressure and the peak pressure increased in the combustion process. Meanwhile, more combustion active intermediates were generated in both the flame development period and flame propagation period. The mass fraction of OH and H radicals has an increase of 36% and 34%, respectively. The fuel combustion rate rose and the turbulent kinetic energy increased which are conducive to improving flame diffusion in the rear part of the chamber and thus facilitate the complete combustion of the fuel. Moreover, the hydrogen blending led to an effective reduction in the CO emission of gasoline‐fueled rotary engine; however, the NO emission slightly increased due to the rise of temperature in cylinder. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Experimental and Numerical Investigation of Influence of Hydrogen Addition to Hydrocarbon Fuel on Wankel Rotary Engine Performance

Itkis

Fedyanov

Levin

2018

Proceedings of the 4th International Conference on Industrial Engineering

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Numerical simulation of hydrogen combustion process in rotary engine with laser ignition system

Cited by 78 publications

References 37 publications

The formation mechanisms of flow field in a compound intake ported rotary engine considering apex seal leakage

The formation mechanisms of flow field in a compound intake ported rotary engine considering apex seal leakage

Effect of different hydrogen blending ratios on combustion process of gasoline‐fueled rotary engine

Experimental and Numerical Investigation of Influence of Hydrogen Addition to Hydrocarbon Fuel on Wankel Rotary Engine Performance

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