超声波辅助尾部泥沉积的多物理合模拟
Liang Peng1,2, Congcong Zhao3
1School of Resources and Safety Engineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|August 14, 2025
概括
超声波辐射优化了在沙堆中的尾矿沉积. 大约28kHz的频率促进粒子应力和沉积,而分层传感器提高声压分布,提高金属矿尾部填充效率.
科学领域:
- 多物理模型建模
- 声学 声学 在声学方面
- 机械学 机械学 机械学
- 静电学 静电学 静电学
背景情况:
- 在沙堆中的尾矿颗粒需要有效的解决方案来填充矿井.
- 优化结算可以防止对原始结构的损坏,并改善材料整合.
研究的目的:
- 建立一个多物理模型来分析在超声波辐射下尾矿沉积的情况.
- 探索不同超声波频率对声场分布和粒子应力-应变特征的影响.
- 提出一个优化的声场方案,以加强尾矿沉积.
主要方法:
- 使用COMSOL开发了一个多物理合模型,集成声学,力学和静电学.
- 在各种超声波频率 (如25,28,40 kHz) 下,模拟了尾部粒子的声场分布和应力-应变特征.
- 研究了一种分阶段的传感器放置方案,以优化声场传播和减少能量消散.
主要成果:
- 28 kHz的超声波辐射导致较低的声压幅度 (173 Pa) 与40 kHz (1220 Pa) 相比,避免损坏尾部砂沉积.
- 纵向声压波动幅度显著增加至25kHz以上,增强粒子拉力和压力应力,以便更好地沉降.
- 阶段式传感器方案将声压分布密度提高到130dB,减少上升干扰和能量损失.
结论:
- 超声波参数与尾矿沉积效率相关,为超声波辅助处理技术优化提供了基础.
- 该研究为优化金属矿山尾矿填充应用中的尾矿沉积提供了理论基础.
- 特定的超声波频率和传感器安排可以显著提高沉过程和效率.
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