Fluid-Solid Coupling-Based Vibration Generation Mechanism of the Multiphase Vortex

被引:27
作者
Zheng, Gaoan [1 ]
Shi, Jilin [2 ]
Li, Lin [3 ,4 ,5 ]
Li, Qihan [3 ]
Gu, Zeheng [3 ,5 ]
Xu, Weixin [3 ,5 ]
Lu, Bin [3 ,5 ]
Wang, Chengyan [3 ,5 ]
机构
[1] Zhejiang Coll Water Resources & Hydropower, Coll Mech & Automot Engn, Hangzhou 310018, Peoples R China
[2] Junan Cty Ctr, Linyi City Highway Business Dev Ctr, Linyi 276000, Peoples R China
[3] Zhejiang Univ Technol, Coll Mech Engn, Hangzhou 310014, Peoples R China
[4] Zhejiang Univ, State Key Lab Fluid Power & Mechatron Syst, Hangzhou 310027, Peoples R China
[5] Minist Educ & Zhejiang Prov, Key Lab Special Purpose Equipment & Adv Proc Techn, Hangzhou 310014, Peoples R China
关键词
multiphase vortex; fluid-solid coupling; fluidic vibration; stochastic signal processing; metallurgical pouring process; SIMULATION;
D O I
10.3390/pr11020568
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Multiphase vortices are widely present in the metallurgical pouring processes, chemical material extraction, hydroelectric power plant energy conversion, and other engineering fields. Its critical state detection is of great significance in improving product yield and resource utilization. However, the multiphase vortex is a complex dynamics problem with highly nonlinear features, and its fluid-induced vibration-generation mechanism faces significant challenges. A fluid-solid coupling-based modeling method is proposed to explore mass transfer process with the vorticity distribution and vibration-generation mechanism. A vibration-processing method is utilized to discuss the four flow-state transition features. A fluid-induced vibration experiment platform is established to verify the numerical results. It is found that the proposed modeling method can better reveal the vibration-evolution regularities of the fluid-solid coupling process. The flow field has a maximum value in the complex water-oil-gas coupled flow process, and induces a pressure pulsation phenomenon, and its frequency amplitude is much larger than that of the water phase and water-oil two-phase flow states. In the critical generation state, the increasing amplitude and nonlinear step structure of high-frequency bands (45 Hz similar to 50 Hz) and random pulse components can be used for the online detection of multiphase-coupling states.
引用
收藏
页数:17
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