基于FLUENT超声振动流场的数值模拟
Numerical Simulation of Ultrasonic Vibration Flow Field Based on FLUENT
摘要: 超声振动辅助加工技术具有高效、高精度、高可靠性、环保等优点，对提高加工质量和效率具有重要意义。为研究在超声振动辅助下工件的两种装夹方案的流场特性，首先，本文在ICEM CFD建立了二维模型并进行了网格划分。然后，将其导入计算流体动力学软件FLUENT进行模型相关参数设置，从而进行数值模拟分析，对工件不同装夹方案流场的气含率进行了详细分析及讨论。最后，对比两种不同安装方式的流场内气含率的分布及大小，从而选择更优的工件装夹方案，为超声振动辅助加工技术发展提供参考。
Abstract:
Ultrasonic vibration assisted machining technology has the advantages of high efficiency, high pre-cision, high reliability and environmental protection, which is of great significance to improve ma-chining quality and efficiency. In order to study the flow field characteristics of two kinds of work-piece clamping schemes assisted by ultrasonic vibration, firstly, a two-dimensional model was es-tablished and meshed in ICEM CFD. Then, it was imported into the computational fluid dynamics software FLUENT to set the relevant parameters of the model, to carry out numerical simulation analysis, and carry out detailed analysis and discussion on the vapor volumefraction of the flow field in different clamping schemes of the workpiece. Finally, the vapor volume fraction distribution range and contents of two different installation modes in the flow field were compared, to select a better workpiece clamping scheme, which provides a reference for the development of ultrasonic vibration assisted machining technology.
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