格子Boltzmann方法研究岩石粗糙裂隙渗流特性

盛金昌; 王璠; 张霞; 李凤滨; 黄青富

doi:10.11779/CJGE201407004

格子Boltzmann方法研究岩石粗糙裂隙渗流特性 English Version

1. 河海大学水利水电学院,江苏南京 210098; 2. 云南省水利水电勘测设计研究院,云南昆明 650021

详细信息

作者简介:
盛金昌(1969- ),男,安徽人,博士,教授,博士生导师,从事岩土工程渗流及其流固热化学多场耦合研究。E-mail: sh901@sina.com。

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出版历程
- 收稿日期: 2013-12-09
- 发布日期: 2014-07-24

Lattice Boltzmann method for rough fracture seepage characteristics of rock

1. College of Water Conservancy and Hydropower, Hohai University, Nanjing 210098, China; 2. Water Conservancy and Hydropower Investigation Design Academy of Yunnan Province, Kunming 650021, China

摘要

摘要: 为研究岩石粗糙裂隙水力特性,建立了基于格子Boltzmann的压力模型。通过对3组不同试件（平板光滑裂隙、矩形非吻合裂隙、随机隙宽裂隙）的模拟,拟合出流量与平均隙宽的关系。研究结果表明,在所计算的10种工况中,3组裂隙中的水流都接近于层流。只有平行光滑裂隙中的水流的流量与平均隙宽近似成立方关系,矩形非吻合裂隙和随机隙宽裂隙中的流量与平均隙宽呈现超立方关系。改变平均隙宽和进出口压力都会导致流量与平均隙宽的关系变化。同时,进出口压力的改变也会造成两者之间产生次立方关系。
- 格子Boltzmann方法 /
- 压力模型 /
- 粗糙裂隙 /
- 平均隙宽
Abstract: To study the hydraulic characteristics of rough rock fracture, a pressure model based on the lattice Boltzmann model is established. Based on simulations of three groups of different specimens (flat smooth fracture, rectangular non-match fracture and random gap width fracture), the relationship between the flow and the average gap width can be fitted. The research results show that under the calculated 10 kinds of working conditions, the flows of the three groups of fractures are close to the laminar ones. Only in parallel smooth cracks, the relationship between the flux and average gap width is approximately a cubic one, and that for rectangular mismatching crack and random gap width fissure shows a super-cubic relationship. Changing the average gap width and import and export pressures may lead to the variation of relationship between the flux and average gap width. In the meantime, the later can also cause the presence of cubic relationship between them.
- lattice Boltzmann method /
- pressure model /
- rough fracture /
- average gap width

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参考文献(12)

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