液动压悬浮抛光固液两相流数值模拟

doi:10.16182/j.issn1004731x.joss.201712008

系统仿真学报 ›› 2017, Vol. 29 ›› Issue (12): 2993-3000.doi: 10.16182/j.issn1004731x.joss.201712008

液动压悬浮抛光固液两相流数值模拟

朱胜伟, 张丽慧^*, 洪滔, 章城

浙江工业大学特种装备制造与先进加工技术教育部重点实验室,杭州 310014

收稿日期:2015-10-30 发布日期:2020-06-06
通讯作者: 张丽慧(1987-), 女, 浙江金华, 博士, 研究方向为精密与超精密加工技术。
作者简介:朱胜伟(1991-), 男, 浙江金华, 硕士生, 研究方向为精密与超精密加工技术。
基金资助:
国家自然科学基金(51375457, 51505427),浙江省自然科学基金(Y14E050057, LQ16E050011)

Solid-liquid Two-phase Flow Simulation of Hydrodynamic Suspension Polishing

Zhu Shengwei, Zhang Lihui^*, Hong Tao, Zhang Cheng

Key Laboratory f E&M, Ministry of Education&Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, China

Received:2015-10-30 Published:2020-06-06

摘要/Abstract

摘要： 针对带有约束边界的新型液动压悬浮抛光方法,采用计算流体力学方法(CFD)和正交试验方法讨论悬浮抛光加工过程中,在不同加工工况对流场动压力及磨粒与壁面撞击状况的影响。模拟结果表明：抛光盘转速ω是影响流场动压力分布和固相颗粒撞击工件表面的速度大小的主要因素,随转速增大,压力和速度显著增大,加工间隙H,影响最小的是抛光液浓度φ。最佳试验参数为ω=1500 r/min,H=50 μm,φ=0.3。该参数下,工件区域的流场压力分布较为均匀,沿径向方向压力分布有一定梯度,速度梯度较小,有助于快速均匀地去除工件材料。

关键词: 液动压悬浮抛光, 流场动压力, 磨粒速度, 两相流

Abstract: According to the new method of hydrodynamic suspension polishing, CFD software is used to simulate the polishing to obtain the distribution of fluid pressure and the velocity of the particles impacting on the work piece surface under different working conditions by the method of orthogonal design. The simulation results show that the rotational speed ω of the disc is the main factor affecting the dynamic pressure and the abrasive particle velocity, while the machining gap H is the secondary factor,and the least influence factor is the polishing liquid concentration φ. The optimal design parameters are: ω=1500 r/min, H=50 μm, φ=0.3. Under the combined parameters, the distribution of the fluid dynamic pressure gradient along the radial direction, the velocity field distribution of the workpiece is consistent with the velocity distribution of uniform circular motion, and the velocity can assure the polishing quality and efficiency.

Key words: hydrodynamic suspension polishing, fluid dynamic pressure, abrasive particle velocity, two-phase flow

中图分类号:

TP391.9

朱胜伟, 张丽慧, 洪滔, 章城. 液动压悬浮抛光固液两相流数值模拟[J]. 系统仿真学报, 2017, 29(12): 2993-3000.

Zhu Shengwei, Zhang Lihui, Hong Tao, Zhang Cheng. Solid-liquid Two-phase Flow Simulation of Hydrodynamic Suspension Polishing[J]. Journal of System Simulation, 2017, 29(12): 2993-3000.

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液动压悬浮抛光固液两相流数值模拟

Solid-liquid Two-phase Flow Simulation of Hydrodynamic Suspension Polishing

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