The pressure wave equation in KIVA during combustion process of internal combustion engines
by Haiqiao Wei; Jingsi Wei; Gequn Shu
International Journal of Vehicle Design (IJVD), Vol. 59, No. 4, 2012

Abstract: An acoustic theory is introduced into the combustion model based on the flow field equations in KIVA. The wave equation is then derived and displays the complex characteristics of three-dimensional unsteady multiple exciting sources of pressure waves in the combustion chamber. The wave equation is changed into differential discrete forms. The in-cylinder pressure fluctuation curve, obtained from the coupled calculation of the wave equation and the KIVA programme, is consistent with the experimental results. This indicates that the combination of a cylinder pressure fluctuation model and a combustion model is an effective method to study pressure oscillations.

Online publication date: Tue, 23-Apr-2013

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