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THE CHARACTERISTICS AND ESTIMATION OF FLOW THROUGH A SINGLE ROUGH-WALLED FRACTURE

《水动力学研究与进展:英文版》2012年 第3期 | LIU Qing-quan FAN Hong-guang   Laboratory-of Environmental Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China
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摘 要:The flow through a single fracture is numerically studied by means of the Fluent Software. The results show that the roughness of the fracture significantly affects the hydraulic conductivity in the fracture as compared with the cubic law model widely used to describe the flow between two smooth parallel plates. A new model is proposed in this paper, the non-symmetric sinusoidal fracture model, to simulate the flow in a real fracture. This model involves two sinusoidal-varying walls with different phases to replace the flat planes in the cubic law model. The relationships between the effective hydraulic apertures and the phase retardation for different relative amplitudes and wavelengths are numerically investigated. A simple expression of the effective hydraulic aperture of the fracture is obtained, together with the law of the effective hydraulic aperture against the amplitude, the phase retardation and the wavelength of two sinusoidal-varying walls.
【分 类】【数理科学和化学】 > 力学 > 固体力学 > 强度理论 > 断裂理论【工业技术】 > 金属学与金属工艺 > 公差与技术测量及机械量仪 > 表面光洁度(表面粗糙度)的测量及其量仪
【关键词】 粗糙度 断裂 特征和 FLUENT软件 评价 薄壁 数值研究 相位延迟
【出 处】 《水动力学研究与进展:英文版》2012年 第3期 315-322页 共8页
【收 录】 中文科技期刊数据库