摘要
根据流固耦合理论,建立了超高压水射流冲击破岩系统的数值分析理论模型。水射流采用标准k ε双方程模型和控制体积法,岩石采用各向同性弹性介质和有限元法,给出了水射流与岩石耦合的数值算法。并按建立的理论模型计算了岩石在水射流速度为316.2m/s、447.2m/s、547.7m/s、632.5m/s冲击下流场规律和岩石内部的应力分布,为超高压水射流破岩机理的研究提供一种新的数值方法。
A numerical analyzing model high pressure water jets impinging on rock is established according to fluid-structure interaction theory. In the model, the standard k-epsilon two equations model and control volume method for water jets, and the elastic orthotropic continuum and finite element method for rock are adapted. Also, a numerical algorithm for both materials is given. Fluid field characteristics and stress distributions in rock under the conditions when water jets with 316.2m/s, 447.2m/s, 547.7m/s and 632.5m/s respectively impinge on the rock are computed using the model and algorithm. The investigation affords a new method for studying the mechanics of rock failure due to water jets impact.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2004年第4期452-457,共6页
Chinese Journal of Hydrodynamics
基金
国家杰出青年科学基金项目(50125413)
国家自然科学基金重点项目(50234030)
关键词
水射流
流固耦合
岩石
k-ε方程
water jets
fluid-structure interaction
rock
k-epsilon equations
