Advances in aircraft and spacecraft science

  • 제2권4호
  • /
  • Pages.445-467
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  • 2015
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  • 2287-528X(pISSN)
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  • 2287-5271(eISSN)
테크노프레스 (Techno-Press)
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Modeling unmanned aerial vehicle jet ignition wankel engines with CAE/CFD

  • Boretti, Albert (Department of Mechanical and Aerospace Engineering (MAE), Benjamin M. Statler College of Engineering and Mineral Resources, West Virginia University (WVU))
  • 투고 : 2015.03.04
  • 심사 : 2015.04.08
  • 발행 : 2015.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

The paper presents some details of the CFD modeling of a novel design where jet ignition devices replace the traditional spark plugs for a faster and more complete combustion. The numerical simulations show how the pre-chamber jet ignition in a Wankel engine differs from reciprocating piston engine applications. The jets issuing from the jet ignition pre-chamber have many different speeds in the different directions as the pressure build-up at the trailing edge of the rotating chamber makes extremely fast the ignition of the chamber mixture in the direction of rotation. Conversely it prevents the jet ignition in the opposite direction. Careful positioning along the periphery and design of the connecting pipes and the prechamber volume with the help of CFD simulations permits to achieve extremely fast and complete combustion as impossible with spark plugs. The paper proposes results of CFD simulations of the combustion evolution within a jet ignited Wankel engine rotor, detailing challenges and opportunities of the application, as well as a first assessment of the impact the faster and more complete combustion permitted by jet ignition may have on the performances of Wankel engines for unmanned aerial vehicles applications.

키워드

참고문헌

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피인용 문헌

  1. Modelling of flame propagation in the gasoline fuelled Wankel rotary engine with hydrogen additives vol.177, 2017, https://doi.org/10.1088/1757-899X/177/1/012076
  2. First tests of laser ignition in Wankel engine vol.1787, pp.1, 2015, https://doi.org/10.1088/1742-6596/1787/1/012031
  3. Use of phased supply of hydrogen additives for improvement of the ecological characteristics of the Wankel rotary engine vol.1155, pp.1, 2015, https://doi.org/10.1088/1757-899x/1155/1/012077