论文部分内容阅读
液体和固体间的冲击问题,随着超高压水射流切割技术的兴起,作了不少研究工作,但至今仍无令人满意的通用模型,现有的工作多基于实验,其研究动向有三: 1.水射流滞止压力强化技术; 2.水射流喷咀形状最优化; 3.水射流破岩方法和机理。水射流破岩效果是由多因素决定的,提高压力能增大射流能量密度,也就能更有效地利用液体冲击固体的特殊力学特性,但强化压力所遇到的困难是高压水发生器和密封寿命
The impact problem of liquid and solid, with the rise of ultra-high pressure water jet cutting technology, has made a lot of research work, but so far there is no satisfactory general model, the existing work is more based on experiments, and its research trends are as follows: 1. Water jet stagnation pressure enhancement technology; 2. Water jet nozzle shape optimization; 3. Water jet breaking rock method and mechanism. Water jet rock breaking effect is determined by many factors. Increasing the pressure can increase the energy density of the jet and can also make more effective use of the special mechanical characteristics of the liquid impacting the solid. However, the difficulties encountered in strengthening the pressure are high pressure water generator and Seal life