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Numerical Simulations on Autoignition Propagation Modes under Reciprocating Engine-relevant Conditions by Pan, Jiaying; Dong, Sheng; Li, Tao; He, Yu; Wei, Haiqiao; Jiang, Jie is a Engineering article available to read on EtoBox.

What is Numerical Simulations on Autoignition Propagation Modes under Reciprocating Engine-relevant Conditions about?

Previous studies on autoignition propagation modes were often performed based on constant-volume configuration. However, the reactant mixture in reciprocating engines always experiences significant variable volume and ever-changing thermodynamic conditions, which may affect autoignition initiation and subsequent development during knocking combustion. In this study, the autoignition reaction wave propagation induced by thermal stratifications was investigated numerically, with addressing the role of reciprocating piston motion and primary flame compression. Compression heating was considered to emulate the compression and expansion caused by reciprocating piston motion, and different combustion boundary conditions and fuel properties were performed to investigate the impact on autoignition propagation modes. The results of hydrogen cases show that similar to constant-volume configurations, various autoignition propagation modes (including thermal explosion, detonation, and deflagration) can be observed. However, the normalized temperature gradients demarcating different autoignition propagation modes change significantly under variable thermodynamic conditions of reciprocating engi

Who reads Numerical Simulations on Autoignition Propagation Modes under Reciprocating Engine-relevant Conditions?

Author

Pan, Jiaying; Dong, Sheng; Li, Tao; He, Yu; Wei, Haiqiao; Jiang, Jie

Publisher

Taylor and Francis Group; Informa UK (Taylor & Francis); Taylor & Francis; Informa UK Limited (ISSN 0010-2202)

Published

2020

Language

EN

Field

Engineering (Physical Sciences)