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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...
MAPPING CLASS GROUP DYNAMICS ON SURFACE GROUP REPRESENTATIONS
GROUP DYNAMICS GROUP REPRESENTATIONS
2015/9/29
Deformation spaces Hom(π, G)/G of representations
of the fundamental group π of a surface Σ in a Lie group G admit natural actions of the mapping class group ModΣ, preserving a
Poisson structure. Wh...
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...
On a new type of solitary surface waves in finite water depth
Solitary wave peaked crest progressive wave fully nonlinear
2012/4/24
In this paper, a new type of solitary surface waves in a finite water depth is found by analytically solving the fully nonlinear wave equations. Using a new type of base functions which decays exponen...
Surface Nanobubble Nucleation Visualized with TIRF Microscopy
Surface Nanobubble Nucleation Visualized TIRF Microscopy Fluid Dynamics
2012/4/24
Nanobubbles are observed with optical microscopy using the total internal reflection fluorescence (TIRF) excitation. We report on TIRF visualization using Rhodamine 6G at 5$\mu\,$M concentration which...
Observation of depth-induced properties in wave turbulence on the surface of a fluid
depth-induced properties wave turbulence fluid
2011/9/2
We report the observation of changes in the wave turbulence properties of gravity-capillary surface waves due to a finite depth effect. When the fluid depth is decreased, a hump is observed on the wav...
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...
Drag Coefficient of a Spherical Particle Attached on the Flat Surface
Drag coefficient Boundary layer Numerical simulation Reynolds number
2016/3/28
The previous analytical solution for the drag coefficient (Cd) for a spherical particle attached on the flat surface, which
was derived by O’Neill (1968), is only valid in the creeping flow condition...
Boundary layer flow over a moving surface in a nanofluid with suction or injection
Nanofluid Moving plate Boundary layer Suction/injection Dual solutions
2012/2/24
An analysis is performed to study the heat transfer characteristics of steady two-dimensional boundary layer flow past a moving permeable flat plate in a nanofluid. The effects of uniform suction and ...
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...
Effects of polar cortical cytoskeleton and unbalanced cortical surface tension on intercellular bridge thinning during cytokinesis
Cytokinesis Normal rat kidney epithelial cells Intercellular bridge
2012/2/28
To probe the contributions of polar cortical cytoskeleton and the surface tension of daughter cells to intercellular bridge thinning dynamics during cytokinesis, we applied cytochalasin D (CD) or colc...
The relationship between near-surface turbulence and gas transfer velocity in freshwater systems and its implications for floating chamber measurements of gas exchange
The relationship near-surface turbulence gas transfer velocity freshwater systems floating chamber measurements of gas exchange
2014/4/17
We performed a series of gas exchange measurements in 12 diverse aquatic systems to develop the direct relationship between near-surface turbulence and gas transfer velocity. The relationship was log-...
RADIATIVE HEAT TRANSFER WITH HYDROMAGNETIC FLOW AND VISCOUS DISSIPATION OVER A STRETCHING SURFACE IN THE PRESENCE OF VARIABLE HEAT FLUX
heat transfer radiation magnetic field
2009/10/14
The boundary layer steady flow and heat transfer of a viscous incompressible fluid due to a stretching plate with viscous dissipation effect in the presence of a transverse magnetic field is studied. ...
THERMO-MICROPOLAR FLUID FLOW ALONG A VERTICAL PERMEABLE PLATE WITH UNIFORM SURFACE HEAT FLUX IN THE PRESENCE OF HEAT GENERATION
micropolar fluid convection heat flux
2009/10/14
A two-dimensional steady convective flow of thermo-micropolar fluid past a vertical permeable flat plate in the presence of heat generation with uniform surface heat flux has been analyzed numerically...