Effect of rubber particles on water flow behavior in fractured-vuggy reservoirs

2021 ◽  
pp. 1-17
Author(s):  
Zhiqiang Mao ◽  
Gang Lu ◽  
Tao Ma ◽  
Huiyong Zeng ◽  
Lifeng Chen
Keyword(s):  
Water Flow ◽  
Flow Behavior ◽  
Rubber Particles

scholarly journals Water Flow Behavior and Storage Potential of the Semi-Arid Ephemeral River System in the Mara Basin of Kenya

2020 ◽  
Vol 8 ◽  
Author(s):  
Sospeter Simiyu Wekesa ◽  
Tibor Yvan Stigter ◽  
Luke O. Olang ◽  
Francis Oloo ◽  
Kelly Fouchy ◽  
...  
Keyword(s):  
Water Flow ◽  
Flow Behavior ◽  
River System ◽  
Storage Potential ◽  
And Storage ◽  
Semi Arid

Numerical Simulation of Water Flow Velocity for Microfluidic Application Using COMSOL Multiphysics

2014 ◽  
Vol 925 ◽  
pp. 651-655
Author(s):  
Nurulazirah Md Salih ◽  
Uda Hashim ◽  
Nayan Nafarizal ◽  
Chin Fhong Soon ◽  
Mohd Zainizan Sahdan
Keyword(s):  
Flow Velocity ◽  
Water Flow ◽  
Flow Behavior ◽  
Microfluidic Devices ◽  
Channel Length ◽  
Comsol Multiphysics ◽  
Simulation Design ◽  
Cross Sectional ◽  
Water Flow Velocity ◽  
Simulation Results

In microfluidic devices, the most important aspect has to be considered for the manufacturing process is the geometric design. Simulation is a good approach for determining the performance of the design. In this study, several microchannel designs were simulated using COMSOL Multiphysics 4.2 software in order to find the optimized geometry. It involves a study of different shape, diameter, length, and angle of microchannels design, and its influence on the water flow velocity. From the simulation results, an optimize microchannels design was obtained which consists of 100 μm cross-sectional diameter, 4:3:11 channel length ratio, and 35 degrees of microchannels angle. Further study could be done to improve the finding of the microfluidic simulation design for better water flow behavior.

scholarly journals Outer Hinged Blades Vertical Shaft Kinetic Turbine Flow Pattern Visualization

2020 ◽  
Vol 9 (4) ◽  
pp. 499-502
Keyword(s):  
Turbine Blade ◽  
Water Flow ◽  
Power Plants ◽  
Flow Behavior ◽  
Flow Speed ◽  
Energy Utilization ◽  
Back Side ◽  
Energy Potential ◽  
Remote Areas ◽  
Visual Observations

The Micro hydro power plant (MHPP) development can be used to supply electricity to people living in remote areas. Because the electricity needed in this area is usually not too big. In remote areas and located far from the electricity transmission network, electricity supplies from small capacity power plants is needed, especially those that utilize renewable local energy potential. The energy utilization as electricity generation is by utilizing available kinetic energy (water potential and water flow speed). The research carried out experimentally and then optimized with Response Surface Methodology. The optimization results are then tested again so as to obtain verification results from the optimization value. Furthermore, based on the value of optimization, visual observations are made to see the flow behavior that occurs on the outside hinged blade and turbine chamber. From the visual observations, it was found that not all the water flow hit the turbine blade surface. On the blade back side, the water flow that hits the turbine blade will increase the turbine rotation. On the blade front side, the water flow that hits the outer blade will open the blade and the water flow will come out immediately from the turbine so that it will reduce the negative torque or back rotation.

scholarly journals Assessment of the Nonlinear Flow Characteristic of Water Inrush Based on the Brinkman and Forchheimer Seepage Model

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 855 ◽  
Author(s):  
Yi Xue ◽  
Yang Liu ◽  
Faning Dang ◽  
Jia Liu ◽  
Zongyuan Ma ◽  
...  
Keyword(s):  
Flow Field ◽  
Water Flow ◽  
Construction Projects ◽  
Underground Mining ◽  
Fractured Rock ◽  
Flow Behavior ◽  
Water Inrush ◽  
Nonlinear Flow ◽  
Fault Permeability ◽  
Forchheimer Flow

Underground fault water inrush is a hydrogeological disaster that frequently occurs in underground mining and tunnel construction projects. Groundwater may pour from an aquifer when disasters occur, and aquifers are typically associated with fractured rock formations. Water inrush accidents are likely to occur when fractured rock masses are encountered during excavation. In this study, Comsol Multiphysics, cross-platform multiphysics field coupling software, was used to simulate the evolution characteristics of water flow in different flow fields of faults and aquifers when water inrush from underground faults occurs. First, the Darcy and Brinkman flow field nonlinear seepage models were used to model the seepage law of water flow in aquifers and faults. Second, the Forchheimer flow field was used to modify the seepage of fluid in fault-broken rocks in the Brinkman flow field. In general, this phenomenon does not meet the applicable conditions of Darcy’s formula. Therefore, the Darcy and Forchheimer flow models were coupled in this study. Simulation results show that flow behavior in an aquifer varies depending on fault permeability. An aquifer near a fault is likely to be affected by non-Darcy flow. That is, the non-Darcy effect zone will either increase or decrease as fault permeability increases or decreases. The fault rupture zone that connects the aquifer and upper roadway of the fault leads to fault water inrush due to the considerably improved permeability of the fractured rock mass.

MODELING WATER FLOW BEHAVIOR WHERE HIGHLY TREATED EFFLUENT IS APPLIED TO SOIL AT VARYING RATES AND DOSING FREQUENCIES

Soil Science ◽  
2005 ◽  
Vol 170 (9) ◽  
pp. 692-706 ◽  
Author(s):  
G. Hassan ◽  
R. B. Reneau ◽  
C. Hagedorn ◽  
M. Saluta
Keyword(s):  
Water Flow ◽  
Flow Behavior ◽  
Treated Effluent

scholarly journals Rock outcrops change infiltrability and water flow behavior in a karst soil

2020 ◽  
Vol 19 (1) ◽  
Author(s):  
Zhimeng Zhao ◽  
Youxin Shen ◽  
Ruohan Jiang ◽  
Qinghe Wang
Keyword(s):  
Water Flow ◽  
Flow Behavior ◽  
Rock Outcrops ◽  
Karst Soil

Numerical Simulation on Water Absorption by MX-80 Bentonite for Nuclear Waste Disposal

2014 ◽  
Vol 490-491 ◽  
pp. 78-82 ◽  
Author(s):  
Guo Qing Cai ◽  
Hui Tian ◽  
Jian Li
Keyword(s):  
Numerical Simulation ◽  
Water Absorption ◽  
Water Flow ◽  
Nuclear Waste ◽  
Waste Disposal ◽  
Flow Behavior ◽  
Soil Column ◽  
Nuclear Waste Disposal ◽  
Water Retention Curve ◽  
Elastic Model

As a low permeability, high thermal conductivity and mechanical strength soil, bentonite has been widely used as buffer/backfill material for nuclear waste disposal. Underground water flow behavior in bentonite was studied in this paper. A numerical simulation was conducted to predict the water absorption test of MX-80 bentonite, which is worldwide known commercial material. ABAQUS was used for simulating the water flow in the soil column in which hydro-mechanical coupled model is taken into consideration. Darcys law and van Genuchten soil water retention curve model were used for water flow. Ideal elastic model, Drucker-Prager plastic model and wetting expansive model were taken to describe the stress-strain relations of the soil. Comparison between experimental and simulation results shows that the proposed numerical method is reasonable to predict the water flow in MX-80 bentonite.

scholarly journals Numerical and physical modeling of water flow over the ogee weir of the new Niedów barrage

2016 ◽  
Vol 64 (1) ◽  
pp. 67-74 ◽  
Author(s):  
Oscar Herrera-Granados ◽  
Stanisław W. Kostecki
Keyword(s):  
Experimental Data ◽  
Numerical Modeling ◽  
Steady Flow ◽  
Water Flow ◽  
Physical Modeling ◽  
Numerical Models ◽  
Flow Behavior ◽  
Three Dimensional ◽  
Flow Conditions ◽  
Low Head

Abstract In this paper, two- and three-dimensional numerical modeling is applied in order to simulate water flow behavior over the new Niedów barrage in South Poland. The draining capacity of one of the flood alleviation structures (ogee weir) for exploitation and catastrophic conditions was estimated. In addition, the output of the numerical models is compared with experimental data. The experiments demonstrated that the draining capacity of the barrage alleviation scheme is sufficiently designed for catastrophic scenarios if water is flowing under steady flow conditions. Nevertheless, the new cofferdam, which is part of the temporal reconstruction works, is affecting the draining capacity of the whole low-head barrage project.

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