CFD Analysis of Natural Gas SI ICE Equipped with Scavenged Pre-Chamber

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00356638" target="_blank" >RIV/68407700:21220/21:00356638 - isvavai.cz</a>

Výsledek na webu

<a href="http://fs12120.fsid.cvut.cz/softlib/2021/FISITA2021_prechamber.zip" target="_blank" >http://fs12120.fsid.cvut.cz/softlib/2021/FISITA2021_prechamber.zip</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

CFD Analysis of Natural Gas SI ICE Equipped with Scavenged Pre-Chamber

Popis výsledku v původním jazyce

ABSTRACT: The paper deals with thermodynamic analysis of a natural gas SI ICE equipped with a scavenged pre-chamber. It is achieved by 3-D CFD simulation of the whole engine cycle while using LES as a turbulence model and ECFM as a combustion model to describe the turbulent flame front propagation. Due to the nature of SI ICE operation and the fact that LES was applied, multiple cycles (typically 3-5) were calculated to consider cycle-to-cycle variations (CCV) as well. The model was verified versus experimental data for 2 different design variants of pre-chamber while considering different operating conditions. After that, the calibrated model was used to test (virtually) different design variants focusing primarily on pre-chamber geometry. Sensitivity studies were carried out to evaluate the influence of different design parameters. The comparison was mainly focused on integral parameters describing the combustion phase (e.g., ROHR), while detailed information regarding local properties was also considered.

Název v anglickém jazyce

CFD Analysis of Natural Gas SI ICE Equipped with Scavenged Pre-Chamber

Popis výsledku anglicky

ABSTRACT: The paper deals with thermodynamic analysis of a natural gas SI ICE equipped with a scavenged pre-chamber. It is achieved by 3-D CFD simulation of the whole engine cycle while using LES as a turbulence model and ECFM as a combustion model to describe the turbulent flame front propagation. Due to the nature of SI ICE operation and the fact that LES was applied, multiple cycles (typically 3-5) were calculated to consider cycle-to-cycle variations (CCV) as well. The model was verified versus experimental data for 2 different design variants of pre-chamber while considering different operating conditions. After that, the calibrated model was used to test (virtually) different design variants focusing primarily on pre-chamber geometry. Sensitivity studies were carried out to evaluate the influence of different design parameters. The comparison was mainly focused on integral parameters describing the combustion phase (e.g., ROHR), while detailed information regarding local properties was also considered.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20303 - Thermodynamics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the FISITA 2021 World Congress

ISBN

978-1-9160259-2-9

ISSN

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e-ISSN

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Počet stran výsledku

13

Strana od-do

1-13

Název nakladatele

FISITA - International Federation of Automotive Engineering Societies

Místo vydání

London

Místo konání akce

Praha

Datum konání akce

14. 9. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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