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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Resolvent problem for linearized compressible Navier-Stokes equations with free surface
自由曲面 线性可压缩 纳维-斯托克斯方程 解问题
2023/4/28
In this talk, we will discuss the resolvent problem for the linearized one of the free surface problem of compressible, viscous and heat-conducting fluid, which is a problem in an infinite strip domai...
Design of free-surface interfaces using RANS equations
Design free-surface interfaces RANS equations
2015/7/3
In this paper, the continuous adjoint methodology to compute shape sensitivities in free-surface hydrodynamic design problems (RANS governing systems) has been developed.
Shape Sensitivity of Free-Surface Interfaces Using a Level Set Methodology
Shape Sensitivity Free-Surface Interfaces Level Set Methodology
2015/7/3
In this paper we develop the continuous adjoint methodology to compute shape sensitivi ties in free-surface hydrodynamic design problems using the incompressible Euler equations and the level set meth...
Stability and consistency of nonhydrostatic free-surface models using the semi-implicit
theta-method stability accuracy artificial damping free surface nonhydrostatic pressure ocean modeling
2015/6/30
The -method is a popular semi-implicit finite-difference method for simulating free-surface flows. Problem stiffness, arising because of the presence of both fast and slow timescale processes, is eas...
Using the level set method in geodynamical modeling of multi-material flows and Earth's free surface
Tracking the material surface flow modeling multi - material flow modeling the level set function
2015/1/6
The level set method allows for tracking material surfaces in 2-D and 3-D flow modeling and is well suited for applications of multi-material flow modeling. The level set method utilizes smooth level ...
A boundary element method for the simulation of non-spherical bubbles and their interactions near a free surface
boundary element method singularities solid angle bubble jetting
2012/2/24
The basic principle and numerical technique for simulating two three-dimensional bubbles near a free surface are studied in detail by using boundary element method. The singularities of influence coef...
Time-Evolution of a Fractal Distribution: Particle Concentrations in Free-Surface Turbulence
Fluid Dynamics (physics.flu-dyn) Chaotic Dynamics (nlin.CD)
2010/11/11
Steady-state turbulence is generated in a tank of water and the trajectories of particles forming a compressible system on the surface are tracked in time. The initial uniformly distributed floating p...
Validation of a CIP-based tank for numerical simulation of free surface flows
CIP method THINC scheme Free surface flow Wave breaking Wave tank
2012/2/28
A constrained interpolation profile CIP-based numerical tank is developed to simulate violent free surface flows. The numerical simulation is performed by the CIP-based Cartesian grid method, which is...
Supershear transition due to a free surface in 3-D simulations of spontaneous dynamic rupture on vertical strike-slip faults
Supershear transition Earthquake rupture dynamics Earthquake source physics
2014/4/8
Supershear rupture propagation has been inferred from seismic observations for natural faults and observed in laboratory experiments. We study the effect of the free surface on the transition of earth...
Higher-order Korteweg-de Vries models for internal solitary waves in a stratified shear flow with a free surface
Higher-order Korteweg-de Vries models internal solitary waves stratified shear flow
2009/11/12
A higher-order extension of the familiar Korteweg-de Vries equation is derived for internal solitary waves in a density- and current-stratified shear flow with a free surface. All coefficients of this...
Total Volume Conservation in Simulation of Unsteady Free-Surface Flows
Free-surface flow Unsteady flow Dam-break Sloshing tank Finite volume method
2009/10/9
Free surface tracking methods used in the numerical simulation of unsteady free surface flows may introduce sources or sinks resulting in changes in total fluid volume in the computational domain. A c...
Numerical Prediction of Wave Drag of 2-D and 3-D Bodies under or on a Free Surface
Ship wave pattern Wave drag Free surface Boundary element method Hydrofoil
2009/10/9
The flow characteristics such as; wave drag, lift (if present in the case of 2-D), wave pattern, and pressure distribution around 2-D and 3-D bodies moving steadily under or on a free surface are inve...
On the Characteristics of an Absorbing Wavemaker with a Cross Section Having a Plumb Part near the Free Surface
Absorbing Wavemaker Active Wave Absorption FIR Digital Filter Absorption Efficiency Cross Section with a Plumb Part near the Free Surface Wave Reflection
2009/5/18
The characteristics of a plunger absorbing wavemaker are studied. In the present wave absorption system the wavemaker is controlled to absorb the incoming waves by means of digital filtering of wave e...
Free Surface Potential Flow around Multi-Hulls in Shallow Water Using a Potential Based Panel Method
Wave Making Resistance Lifting Body Shallow Water Free Surface Boundary Element Method Sinkage and Trim
2009/5/18
The present paper investigates the shallow water effect on the hydrodynamic characteristics of lifting body such as wave resistance, sinkage and trim using a potential based boundary element method. T...
Wave Making Resistance of Ships in Shallow Water Based on Second Order Free Surface Condition with Sinkage and Trim Effects
Resistance Boundary Element Method Shallow Water Morino Perturbation Method Free-Surface Flow
2009/5/12
The problem of free surface potential flow around a ship in shallow water is subjected to linearized form of free surface condition and kinematic conditions on the body and bottom surface. The solutio...