论文期刊

Quantitative study on energy dissipation mechanism of metal rubber by an enhanced turbulence model




作者: Zhuo Zhou, Jiu Hui Wu, Xiao Liang, Mei Lin, and X. Yuan
发表/完成日期: 2019-08-06
期刊名称: Modern Physics Letters B
期卷: Vol. 33, No. 33, 2019
相关文章: 周卓_Quantitative study on energy dissipation mechanism of metal rubber by an enhanced turbulence model.pdf   
论文简介
This paper studies the energy dissipation of metal rubber with an enhanced turbulence
model. Based on the catastrophe theory which is a highly generalized mathematical tool,
a new method for studying turbulence is proposed, which can quantitatively analyze the
energy dissipation of the whole turbulence developed to process and strictly deduce the
expression of the energy spectrum density in different turbulence development stages.
Then, a theoretical model of sound absorption performance in full-frequency is established by this enhanced turbulence model. Furthermore, the sound absorption property
and energy dissipation of metal rubber are studied under different structural parameters.
This paper not only demonstrates −10/9 and −5/3 power laws of the energy spectrum
but also finds −3 power laws at high frequencies. Finally, the accuracy of the enhanced
turbulence model and the feasibility of the metal rubber research method based on the
enhanced turbulence model are verified by wind tunnel test and standing wave tube test,
respectively. This study not only has a theoretical guidance for the preparation of metal
rubber but also has a new perspective for the study of turbulent phase transition and
even other complex phase transitions.