An efficient methodology for combustion flow simulations with large detailed chemical kinetics

2016 Fiscal Year Final Research Report

• Project/Area Number: 26390128
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Computational science
• Research Institution: Hokkaido University (2015-2016); The University of Tokyo (2014)
• Principal Investigator: Terashima Hiroshi (石原洋史) 北海道大学, 工学研究院, 准教授 (20415235)
• Co-Investigator(Renkei-kenkyūsha): KOSHI Mitsuo 横浜国立大学, 環境情報研究科, 非常勤教員 (20133085) ; MORII Youhi 独立行政法人宇宙航空研究開発機構, 研究開発部門, 研究開発員 (50707198)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 反応性流体 / 燃焼 / 詳細化学反応 / 流体シミュレーション

Outline of Final Research Achievements

An efficient methodology for simulations of reactive flows (CFD) with large detailed chemical kinetics has been successfully proposed. The present method consists of a fast explicit time integration method for stiff chemical reaction equations and a species bundling technique for efficient calculations of transport properties of mixture. The present method, in particular, the fast explicit time integration method, provides much faster performance with the order of two or three when compared to a conventional approach, enabling an efficient application of large detailed chemical kinetics in CFD simulations. The method has been successfully applied to a wide range of combustion problems such as knocking phenomena of n-heptane (373 chemical species and 1071 reactions) in internal combustion engines, providing the detailed mechanism of strong pressure wave generation and development associated with end-gas autoignition.

Free Research Field

反応性流体力学