欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
针对深埋引水隧洞的储热作用所导致的施工通风散烟困难问题，建立综合考虑气固热交换、尘粒间相互耦合作用的三维非稳态欧拉一拉格朗日两相流紊流模型．尘粒间相互耦合作用力包括相间曳力、浮力、热泳力、升力和虚拟质量力等．结合某大型水电站深埋长距离引水隧洞施工通风，探讨隧洞内含尘气流的对流热交换规律，研究隧洞内风流微观运动机理以及粉尘运移规律．模拟结果表明：风流在风管出口下侧形成涡流区，1号和2号引水隧洞风流分布基本一致；工作面附近通风降温效果明显，隧洞壁面的表面平均换热系数沿工作面到风管出口处呈先增大后减小的趋势，表面平均换热系数模拟值与经验公式计算结果基本吻合；施工通风1350S左右时，粉尘浓度满足规范要求．
英文摘要：
Smoke extraction difficulties caused by storage heat effects exist in the construction ventilation of deep diversion tunnel. A three-dimensional unsteady Euler-Lagrange two-phase flow turbulence model considering the gas- solid heat exchange and the intercoupling between dust particles was proposed. The intercoupling between dust parti- cles included the effects of buoyancy, inter-phase drag, thermophoretic force, lift force and virtual mass force. The construction ventilation of a large-scale hydropower long-distance diversion tunnel was used as a case. The dusty air convection heat transfer law in the tunnel was discussed. The microscopic airflow movement mechanism and the dust migration law were analyzed. Results show that an eddy zone is formed under the duct outlet, and that the airflow distribution tendency of No.1 diversion tunnel is similar to that of No.2 diversion tunnel. With the ventilation time increasing, the temperature near the heading face apparently drops. The surface average heat transfer coefficients of the tunnel have a tendency to increase firstly and then diminish from the heading face to the duct outlet. The simula- tion values of heat transfer coefficients are in good agreement with the experiential values. Dust concentration meets the standard after about 1 350 s.
同期刊论文项目
同项目期刊论文
Two-phase flow numerical simulation of a bend-type ice sluice in the diversion water channel of powe
Experimental study on the bed topography evolution in alluvial meandering rivers with various sinuou
Analysis of agricultural pollution by flood flow impact on water quality in a reservoir using a thre
Three-dimensional simulation of the water flow field and the suspended-solids concentration in a cir
Numerical investigation on vortex-induced vibration of an elastically mounted circular cylinder at l
An Integrated Groundwater Management Mode Based on Control Indexes of Groundwater Quantity and Level
Short-term optimal operation of Three-gorge and Gezhouba cascade hydropower stations in non-flood se
Risk identification on hydropower project using the IAHP and extension of TOPSIS methods under inter
The effects of strong motion duration on the dynamic response and accumulated damage of concrete gra
Observation of microscopic damage accumulation in brittle solids subjected to dynamic compressive lo
Laboratory observation of acoustic fluidization in granular fault gouge and implications for dynamic
Laboratory measurements of the rate dependence of the fracture toughness anisotropy of Barre granite
Optimal sensor placement for large structures using the nearest neighbour index and a hybrid swarm i
Joint impact of rainfall and tidal level on flood risk in a coastal city with a complex river networ
Eulerian-Eulerian solid-liquid two-phase flow of sandstone wastewater in a hydropower station rectan
Research on virtual-reality interactive simulation for concrete dam construction process based on ve
Seismic cracking analysis of concrete gravity dams with initial cracks using the extended finite ele
Constructioin Schedule Real-time Control Coupling Consruction Quality in Large Scale Underground Pow
Comprehensive Evaluation of the Coupling Construction Progress and Quality of High Core Rockfill Dam
Joint probability distribution of winds and waves from wave simulation of 20 years (1989-2008) in Bo
Construction Schedules Simulation and Prediction of Water Conveyance Tunnel Based on Karst Geologica
Research on Management Information System for Construction Consultant in Hydropower Project Based on
A Study on the Controllability of Deepwater Manifold during Launch through Pendulous Installation Me
Research on Construction Schedule Real-Time Control of High Core Rock-Fill Dam Based on Digital Moni
Tracking methods for free surface and simulation of a liquid droplet impacting on a solid surface ba
Finite element analysis on thermal upheaval buckling of submarine burial pipelines with initial impe
期刊信息
位置：