Multiphysical field numerical simulation of gas liquid solid three phase abrasive particles under coupled ultrasonic field
HAN Shuai fei, JI Shi ming, CHEN Guo da, PAN Ye

(Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of 

Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, China)

Abstract: Aiming at the problem of uneven distribution of flow field of gas liquid solid three phase abrasive flow polishing, the distribution of turbulent flow, turbulent peak, energy, temperature and processing quality in gas liquid solid three phase abrasive particle flow were researched, the polishing method and polishing problem of gas liquid solid three phase abrasive flow were summarized, and a multiphysical field numerical simulation method was proposed for gas liquid solid three phase abrasive particles under coupled ultrasonic field. By using the alternating pressure of ultrasonic field, the flow field of gas liquid solid three phase abrasive particles was increased to chance the flow field distribution. The results indicate that different ultrasonic frequency and sound pressure intensity have different results. Among the different ultrasonic frequency and sound pressure intensity, the ultrasonic frequency of 20kHz and the sound pressure amplitude of 30kPa can obtain the optimal flow distribution. This study is of great significance to the promotion and practical application of gas liquid solid three phase abrasive particles flow polishing method.

Key words: multi field coupling; ultrasonic field; turbulent distribution; numerical simulation