Application of dynamic mode decomposition in in-cylinder flow field study

作者：Qin, Wen Jin; Xu, Min^*; Hung, David; Ge, Peng Hui

来源：Transactions of CSICE, 2016, 34(4): 334-338.

DOI：10.16236/j.cnki.nrjxb.201604045

• Accurate flow data
• Different frequency
• Dynamic mode decompositions
• In-cylinder flows
• Particle image velocimetries
• Processing method
• Turbulence characteristics
• Working process

In-cylinder flow field plays a key role in the internal combustion engine working process. Besides the accurate flow data recording, reasonable mathematic processing method is also important. The dynamic mode decomposition (DMD) was used to analyse the in-cylinder flow field PIV dataset of an optical spark ignition direct injection (SIDI) engine. The turbulence characteristics under different frequency were studied, including the vortices structure spatial distribution, flow energy/intensity distribution and decay rate. The study enriches the understanding of the in-cylinder flow field.

• 出版日期2016
• 单位上海交通大学