Conference
Computational Investigation on the Effects of Pre-Chamber Volume in an Active Narrow-Throat Pre-Chamber Engine
| العنوان: | Computational Investigation on the Effects of Pre-Chamber Volume in an Active Narrow-Throat Pre-Chamber Engine |
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| المؤلفون: | Silva, Mickael, Liu, Xinlei, Hlaing, Ponnya, Cenker, Emre, Al-Ramadan, Abdullah, Turner, James W.G., Im, Hong G. |
| المساهمون: | Clean Combustion Research Center, Physical Science and Engineering (PSE) Division, Mechanical Engineering Program, Saudi Aramco R&DC , Dhahran, Saudi Arabia |
| بيانات النشر: | American Society of Mechanical Engineers |
| سنة النشر: | 2024 |
| المجموعة: | King Abdullah University of Science and Technology: KAUST Repository |
| الوصف: | To understand key physical aspects of volume in narrow-throat pre-chambers, computational fluid dynamics simulations were performed using CONVERGE™. A major advantage of a narrow-throat feature is to allow for drop-in replacement of a diesel injector, hence facilitating technology deployment. Despite broad literature on conventional pre-chambers, the narrow-throat has been shown to induce a different behavior, hence a thorough computational characterization is needed. The considered simulations were at lean conditions with methane, except the pre-chamber, which was additionally fueled thus providing an active mode of operation. The modeling work was validated with experiments and provided additional insights into key remaining questions on the small and large pre-chambers effects. The G-Equation combustion model was adopted; Peters’ turbulent flame speed correlation was used, while a skeletal methane mechanism was used for tabulating the laminar flame speed. The simulation data reveals that reducing the volume leads to significant stratification and low turbulence inside the pre-chamber. This combined with lower surface area led to lower heat transfer losses when compared to larger pre-chambers. Furthermore, the shorter jet issuing duration of small pre-chambers caters to longer combustion duration, as the turbulence and convection from the jets quickly dissipate. The Borghi-Peters diagram was further utilized to correlate the results with fundamental quantities and expected turbulent regimes encountered for the different pre-chambers. ; The paper is based upon work supported by Saudi Aramco Research and Development Center FUELCOM3 program under Master Research Agreement Number 6600024505/01. FUELCOM (Fuel Combustion for Advanced Engines) is a collaborative research undertaking between Saudi Aramco and KAUST intended to address the fundamental aspects of hydrocarbon fuel combustion in engines, and develop fuel/engine design tools suitable for advanced combustion modes. The computational simulations utilized the ... |
| نوع الوثيقة: | conference object |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| Relation: | https://asmedigitalcollection.asme.org/ICEF/proceedings/ICEF2023/87561/V001T06A004/1194240; http://hdl.handle.net/10754/696683 |
| DOI: | 10.1115/icef2023-110084 |
| الاتاحة: | http://hdl.handle.net/10754/696683 https://doi.org/10.1115/icef2023-110084 |
| Rights: | This is an accepted manuscript version of a paper before final publisher editing and formatting. Archived with thanks to American Society of Mechanical Engineers. |
| رقم الانضمام: | edsbas.2332A32E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1115/icef2023-110084 |
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