A two-fluid model with a tensor closure model approach for free surface flow simulations

2015 ◽  
Vol 122 ◽  
pp. 596-613 ◽  
Author(s):  
Ricardo V.P. Rezende ◽  
Regiani A. Almeida ◽  
Antônio A. Ulson de Souza ◽  
Selene M.A. Guelli U. Souza
Keyword(s):  
Free Surface ◽  
Fluid Model ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Closure Model ◽  
Flow Simulations ◽  
Two Fluid Model ◽  
Two Fluid ◽  
Model Approach

scholarly journals Two-Fluid Model Approach for Transient Analysis of Free-Surface-Pressurized Flows.

2001 ◽  
Vol 67 (659) ◽  
pp. 1742-1748
Author(s):  
Kazutoshi ARAI ◽  
Youhei HASEGAWA ◽  
Katsuhiro YAMAMOTO ◽  
Shunsuke SHIMIZU
Keyword(s):  
Free Surface ◽  
Transient Analysis ◽  
Fluid Model ◽  
Pressurized Flows ◽  
Two Fluid Model ◽  
Two Fluid ◽  
Model Approach

Two-Fluid Model Approach for Transient Analysis of Mixed Free-Surface Pressure Flow

2000 ◽  
Vol 2000 (0) ◽  
pp. 136
Author(s):  
Kazutoshi ARAI ◽  
Youhei HASEGAWA ◽  
Shinya MORI ◽  
Shunsuke SHIMIZU ◽  
Katsuhiro YAMAMOTO
Keyword(s):  
Free Surface ◽  
Surface Pressure ◽  
Transient Analysis ◽  
Fluid Model ◽  
Pressure Flow ◽  
Two Fluid Model ◽  
Two Fluid ◽  
Model Approach

Free-Surface Flow Simulations With Interactively Moving Bodies

2017 ◽  
Author(s):  
Arthur E. P. Veldman ◽  
Henk Seubers ◽  
Peter van der Plas ◽  
Joop Helder
Keyword(s):  
Free Surface ◽  
Free Fall ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Numerical Solution Method ◽  
Flow Simulations ◽  
Floating Object ◽  
Offshore Industry ◽  
Floating Objects ◽  
Moving Bodies

The simulation of free-surface flow around moored or floating objects faces a series of challenges, concerning the flow modelling and the numerical solution method. One of the challenges is the simulation of objects whose dynamics is determined by a two-way interaction with the incoming waves. The ‘traditional’ way of numerically coupling the flow dynamics with the dynamics of a floating object becomes unstable (or requires severe underrelaxation) when the added mass is larger than the mass of the object. To deal with this two-way interaction, a more simultaneous type of numerical coupling is being developed. The paper will focus on this issue. To demonstrate the quasi-simultaneous method, a number of simulation results for engineering applications from the offshore industry will be presented, such as the motion of a moored TLP platform in extreme waves, and a free-fall life boat dropping into wavy water.

New modified gradient models for MPS method applied to free-surface flow simulations

2017 ◽  
Vol 66 ◽  
pp. 95-116 ◽  
Author(s):  
Farnoush A. Daneshvar ◽  
G. Reza Rakhshandehroo ◽  
Nasser Talebbeydokhti
Keyword(s):  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Mps Method ◽  
Flow Simulations ◽  
Gradient Models

Two methods of surface tension treatment in free surface flow simulations

2018 ◽  
Vol 86 ◽  
pp. 236-242 ◽  
Author(s):  
Kirill D. Nikitin ◽  
Kirill M. Terekhov ◽  
Yuri V. Vassilevski
Keyword(s):  
Surface Tension ◽  
Free Surface ◽  
Free Surface Flow ◽  
Surface Flow ◽  
Flow Simulations

scholarly journals Simulation of Free Surface Compressible Flows via a Two Fluid Model

2008 ◽  
Author(s):  
Fre´de´ric Dias ◽  
Denys Dutykh ◽  
Jean-Michel Ghidaglia
Keyword(s):  
Free Surface ◽  
Wave Breaking ◽  
Compressible Flows ◽  
Fluid Model ◽  
Three Dimensional ◽  
Two Fluids ◽  
Equation Of States ◽  
Two Fluid Model ◽  
Velocity Pressure ◽  
Two Fluid

The purpose of this communication is to discuss the simulation of a free surface compressible flow between two fluids, typically air and water. We use a two fluid model with the same velocity, pressure and temperature for both phases. In such a numerical model, the free surface becomes a thin three dimensional zone. The present method has at least three advantages: (i) the free-surface treatment is completely implicit; (ii) it can naturally handle wave breaking and other topological changes in the flow; (iii) one can easily vary the Equation of States (EOS) of each fluid (in principle, one can even consider tabulated EOS). Moreover, our model is unconditionally hyperbolic for reasonable EOS.

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