scholarly journals A NUMERICAL SIMULATION OF SALT WATER BEHAVIOR IN THE DOWNSTREAM REACH OF SAGAMI RIVER WITH A VERTICAL 2-D MODEL

2001 ◽  
Vol 45 ◽  
pp. 949-954
Author(s):  
Kentaro KUDO ◽  
Tomoyuki SUZUKI ◽  
Tadaharu ISHIKAWA
Keyword(s):  
Numerical Simulation ◽  
Salt Water ◽  
Downstream Reach ◽  
Water Behavior ◽  
D Model

Numerical Simulation of the Process of Partial Void Formation under Cement Concrete Pavement Slab

2011 ◽  
Vol 97-98 ◽  
pp. 241-246
Author(s):  
Xiao Chun Zhang ◽  
Shu Shu Liu ◽  
Shi Kui Hu ◽  
Ning Zhang
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Concrete Slab ◽  
Void Formation ◽  
Concrete Pavement ◽  
Void Size ◽  
Cement Concrete ◽  
Center Edge ◽  
Cement Concrete Pavement ◽  
D Model

The damage of void under cement concrete slab is one of the main diseases in cement concrete pavement. By finite element method, a 3-D model of cement concrete pavement structure was established to simulate the partial void under the cement concrete pavement slab with different loading conditions. The process of the division between the subgrade and the slab with a soft area under the slab are reappeared. The changing rules of the void size with the number of cycle load in case of different tie pressure and loading location (at the center, edge or corner of the slab).

scholarly journals Numerical simulation of the flow rate effect on the evolution of a negatively buoyant water jet

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Oumaima Eleuch ◽  
Zied Driss
Keyword(s):  
Numerical Simulation ◽  
Stokes Equations ◽  
Fluid Model ◽  
Salt Water ◽  
Pure Water ◽  
Water Jet ◽  
Navier Stokes ◽  
Navier Stokes Equations ◽  
Vof Model ◽  
Negative Buoyancy

A numerical simulation study was done on a penetrating pure water jet injected into another surrounding salt water miscible with negative buoyancy conditions. For the incompressible filtered Navier-Stokes equations and the sum of the fluid model volume, we used a transient Computational Fluid Dynamics (CFD) solver (VOF model). A finite volume discretization method using Open Source code given in Open Foam 2.3.0. was used to solve these equations. The flow has a significant impact in the laminar system on the evolution of the jet in terms of subsequent permanent phase as well as the transient regime.

scholarly journals Dynamic Model and Numerical Simulation of Maximum Turbidity Zone Formation in River Inlet

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Huawei Xie ◽  
Shubham Sharma ◽  
Milad Sadeghzadeh ◽  
Alibek Issakhov
Keyword(s):  
Numerical Simulation ◽  
Dynamic Model ◽  
Salt Water ◽  
Transitional Zone ◽  
Reynolds Stress Model ◽  
Natural Habitats ◽  
Zone Formation ◽  
Maximum Turbidity Zone ◽  
Maximum Turbidity

The estuary of a river can be seen as a relatively free and partially closed coastal body. It is connected to the ocean and is a transitional zone of rivers, which contains processes from land to sea and from fresh water to salt water. The estuary is one of the most productive natural habitats in the world and carries a large number of sediments due to natural factors such as changes in runoff and tides. Therefore, many coastal areas with river estuaries have become the most densely populated areas in the human population. In this paper, the RSM (Reynolds stress model) turbulence model and the PID (proportional integral derivative) algorithm are successfully used to simulate the dynamic model and for the numerical simulation of the formation of turbidity maximum zone in the estuary, which provides a theoretical basis for the follow-up of the similar research studies.

Seasonal Soil Freezing Characters in Daxinganling

2013 ◽  
Vol 652-654 ◽  
pp. 1668-1672
Author(s):  
Lin Ding ◽  
Yan Jie Liu ◽  
Yi Mei Min
Keyword(s):  
Thermal Conductivity ◽  
Numerical Simulation ◽  
Moisture Content ◽  
Laboratory Test ◽  
Transition Function ◽  
Ground Temperature ◽  
Soil Freezing ◽  
Seasonal Freezing ◽  
Freezing Soil ◽  
Water Behavior

For understanding the transport of groundwater existing in the seasonal freezing soil，laboratory test and field monitoring (frozen depth、moisture content and ground temperature in five months) were carried out in Daxinganling. A translocation model is built to analyze water behavior. The result shows that thermal conductivity will increase approximately one percent when temperature decreases 1°C. A transition function is used to prevent non-convergence in the numerical simulation. The simulation proves that the modified numerical simulation can reveal the law of moisture and heat translocation, and further offer guidance in practice.

scholarly journals 509 Numerical Simulation of Liquid Water Behavior in Separator-Channels in PEFC using LBM

2006 ◽  
Vol 2006.45 (0) ◽  
pp. 171-172
Author(s):  
Kohsuke Kibo ◽  
Yutaka Tabe ◽  
Kazusige Kikuta ◽  
Takemi Chikahisa
Keyword(s):  
Numerical Simulation ◽  
Liquid Water ◽  
Water Behavior
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