Integrated Modeling of Fully Coupled Two-Phase Surface and Subsurface Flow

2021 ◽  
pp. 680-687
Author(s):  
Yulong Zhu ◽  
Tatsuya Ishikawa ◽  
Srikrishnan Siva Subramanian
Keyword(s):  
Subsurface Flow ◽  
Integrated Modeling ◽  
Two Phase ◽  
Phase Surface ◽  
Fully Coupled ◽  
Surface And Subsurface Flow

scholarly journals A 2-D and 3-D Composite Dimensional Fully Coupled Surface and Subsurface Flow Model

2012 ◽  
Vol 17 (2) ◽  
pp. 1-13 ◽  
Author(s):  
Natsuki Buma ◽  
Junichiro Takeuchi ◽  
Toshihiko Kawachi ◽  
Shunsuke Chono ◽  
Chie Imagawa ◽  
...  
Keyword(s):  
Flow Model ◽  
Subsurface Flow ◽  
Fully Coupled ◽  
Surface And Subsurface Flow

scholarly journals A fully coupled two‐phase bone material model

PAMM ◽  
2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Mischa Blaszczyk ◽  
Klaus Hackl
Keyword(s):  
Material Model ◽  
Two Phase ◽  
Bone Material ◽  
Fully Coupled

scholarly journals Surface and subsurface contributions to the build-up of forces on bed particles

2018 ◽  
Vol 851 ◽  
pp. 558-572 ◽  
Author(s):  
Alessandro Leonardi ◽  
D. Pokrajac ◽  
F. Roman ◽  
F. Zanello ◽  
V. Armenio
Keyword(s):  
Mutual Influence ◽  
Subsurface Flow ◽  
Porous Wall ◽  
Industrial Applications ◽  
Solid Particles ◽  
Free Flow ◽  
Spherical Particles ◽  
Large Eddy ◽  
Lift Forces ◽  
Surface And Subsurface Flow

In nature and in many industrial applications, the boundary of a channel flow is made of solid particles which form a porous wall, so that there is a mutual influence between the free flow and the subsurface flow developing inside the pores. While the influence of the porous wall on the free flow has been well studied, less well characterized is the subsurface flow, due to the practical difficulties in gathering information in the small spaces given by the pores. It is also not clear whether the subsurface flow can host turbulent events able to contribute significantly to the build-up of forces on the particles, potentially leading to their dislodgement. Through large eddy simulations, we investigate the interface between a free flow and a bed composed of spherical particles in a cubic arrangement. The communication between surface and subsurface flow is in this case enhanced, with relatively strong turbulent events happening also inside the pores. After comparing the simulation results with a previous experimental work from a similar setting, the forces experienced by the boundary particles are analysed. While it remains true that the lift forces are largely dependent on the structure of the free flow, turbulence inside the pores can also give a significant contribution. Pressure inside the pores is weakly correlated to the pressure in the free flow, and strong peaks above and below a particle can happen independently. Ignoring the porous layer below the particle from the computations leads then in this case to an underestimation of the lift forces.

Developing an Advance Tire Hydroplaning Model Using Co-Simulation of Fully Coupled FEM and CFD Codes to Estimate Cornering Force

2018 ◽  
Author(s):  
Ashkan Nazari ◽  
Lu Chen ◽  
Francine Battaglia ◽  
Saied Taheri
Keyword(s):  
Cfd Model ◽  
Fluid Structure Interactions ◽  
Two Phase ◽  
Fluid Structure ◽  
The Public ◽  
Element Size ◽  
Road Surfaces ◽  
Computational Fluid Dynamics Cfd ◽  
Fully Coupled ◽  
Surrounding Fluid

Hydroplaning is a phenomenon which occurs when a layer of water between the tire contact patch and pavement pushes the tire upward. The tire detaches from the pavement, preventing it from providing sufficient forces and moments for the vehicle to respond to driver’s control inputs such as breaking, acceleration and steering. This work is mainly focused on the tire and its interaction with the pavement to address hydroplaning. Fluid Structure Interactions (FSI) between the tire-water-road surfaces are investigated through two approaches. In the first approach, the coupled Eulerian-Lagrangian (CEL) formulation was used. The drawback associated with the CEL method is the laminar assumption and that the behavior of the fluid at length scales smaller than the smallest element size is not captured. As a result, in the second approach, a new Computational Fluid Dynamics (CFD) Fluid Structure Interaction (FSI) model utilizing the shear-stress transport k-ω model and the two-phase flow of water and air, was developed that improves the predictions with real hydroplaning scenarios. Review of the public literature shows that although FEM and CFD computational platforms have been applied together to study tire hydroplaning, developing the tire-surrounding fluid flow CFD model using Star-CCM+ has not been done. This approach, which was developed during this research, is explained in details and the results of hydroplaning speed and cornering force from the FSI simulations are presented and validated using the data from literature.

Numerical modelling of coupled surface and subsurface flow systems

2010 ◽  
Vol 33 (1) ◽  
pp. 92-105 ◽  
Author(s):  
Prince Chidyagwai ◽  
Beatrice Rivière
Keyword(s):  
Numerical Modelling ◽  
Subsurface Flow ◽  
Flow Systems ◽  
Surface And Subsurface Flow

Experimental study of a two-phase surface jet

2013 ◽  
Vol 54 (4) ◽  
Author(s):  
Matias Perret ◽  
Mehdi Esmaeilpour ◽  
Marcela S. Politano ◽  
Pablo M. Carrica
Keyword(s):  
Experimental Study ◽  
Two Phase ◽  
Surface Jet ◽  
Phase Surface
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