


Title

GPU fluid simulation  blood





Abstract 
I found this video on the web and it does not belong to me. However i thought this will be of interets to the community. Thanks Keenan for this wonderful work. Following is quoted from Keenan. "During my time at NVIDIA I wrote a 3D NavierStokes fluid solver that runs entirely on the GPU. Fluid solvers are used to generate realistic, physicallybased animations of water and smoke. Typically it takes several minutes or hours to generate each frame of animation, but by making some minor compromises in visual quality and taking advantage of the GPU's parallelism and bandwidth the solver is fast enough for realtime applications (e.g., around 120180 frames per second at 64x64x128 on a GeForce 8800 GTX). See http://www.cs.caltech.edu/~keenan/pro... for more information." 


Title

GPU fluid simulation  fire





Abstract 
I found this video on the web and it does not belong to me. However i thought this will be of interets to the community. Thanks Keenan for this wonderful work. Following is quoted from Keenan. 'During my time at NVIDIA I wrote a 3D NavierStokes fluid solver that runs entirely on the GPU. Fluid solvers are used to generate realistic, physicallybased animations of water and smoke. Typically it takes several minutes or hours to generate each frame of animation, but by making some minor compromises in visual quality and taking advantage of the GPU's parallelism and bandwidth the solver is fast enough for realtime applications (e.g., around 120180 frames per second at 64x64x128 on a GeForce 8800 GTX). See http://www.cs.caltech.edu/~keenan/pro... for more information' 


Title

Amazing Liquid





Abstract 
A nonNewtonian fluid is a fluid in which the viscosity changes with the applied strain rate. As a result, nonNewtonian fluids may not have a welldefined viscosity.
Although the concept of viscosity is commonly used to characterize a material, it can be inadequate to describe the mechanical behavior of a substance, particularly nonNewtonian fluids. They are best studied through several other rheological properties which relate the relations between the stress and strain tensors under many different flow conditions, such as oscillatory shear, or extensional flow which are measured using different devices or rheometers. The rheological properties are better studied using tensorvalued constitutive equations, which are common in the field of continuum mechanics.
An inexpensive, nontoxic sample of a nonNewtonian fluid sometimes known as oobleck can be made very easily by adding corn starch (cornflour) to a cup of water. Add the starch in small portions and stir it in slowly. When the suspension nears the critical concentration  becoming like single cream (light cream) in consistency  the so called "shear thickening" property of this nonNewtonian fluid becomes apparent. The application of force  f... 


Title

GPU fluid simulation  advection





Abstract 
I found this video on the web and it does not belong to me. However i thought this will be of interets to the community. Thanks Keenan for this wonderful work. Following is quoted from Keenan. "During my time at NVIDIA I wrote a 3D NavierStokes fluid solver that runs entirely on the GPU. Fluid solvers are used to generate realistic, physicallybased animations of water and smoke. Typically it takes several minutes or hours to generate each frame of animation, but by making some minor compromises in visual quality and taking advantage of the GPU's parallelism and bandwidth the solver is fast enough for realtime applications (e.g., around 120180 frames per second at 64x64x128 on a GeForce 8800 GTX). I'm currently preparing a chapter that covers some of these ideas for GPU Gems 3. This video demonstrates 1st order accurate semiLagrangian advection with and without vorticity confinement, as well as a 2nd order accurate MacCormack scheme (with vorticity confinement). See http://www.cs.caltech.edu/~keenan/pro... for more information." 


Title

Flow Visualization: Aerodynamics of Truck vs....





Abstract 
A video showing the flow of dye over and through a Nascar and Truck illustrating fluid mechanics and aerodynamics. In fluid dynamics it is critically important to see the patterns produced by flowing fluids, in order to understand them. We can appreciate this on several levels: Most fluids (air, water, etc.) are transparent, thus their flow patterns are invisible to us without some special methods to make them visible.On another level, we know the governing equations of fluid motion (the NavierStokes equations), but they are nonlinear partial differential equations with very few general solutions of practical utility. We can solve them numerically with modern computer methods, but these solutions may not correspond to ... 


Title

2D CFD Bullet in a Pipe





Abstract 
This is not my video. I found it on the web. Thought it would be interesting to the community. This is a 2d CFD simulation of a supersonic bullet fired down a pipe, made using a special version of VH1 that can simulate flow around rigid objects.The solver is PPMLR, piecewiseparabolic method (Collela & Woodward), with a Lagrangian remap. 


Title

Leaping shampoo and the stable Kaye effect





Abstract 
DOI  10.1088/17425468/2006/07/P07007
Shearthinning fluids exhibit surprisingly rich behavior. One example is the Kaye effect which occurs when a thin stream of a solution of polyisobutylene in decalin is poured into a dish of the fluid. As pouring proceeds, a small stream of liquid occasionally leaps upward from the heap. This surprising effect, which lasts only a second or so, is named after its first observer, Kaye, who could offer no explanation for this behaviour. Later, Collyer and Fischer suggested from 250 frames s−1 cine recordings that the fluid must be highly shear thinning as well as elastic and 'pituitous' (slimy or sticky). In addition, their results suggested that a rigid surface is required to back the reflected liquid stream. While the words bouncing and reflection are associated with elastic effects, we will show here that the Kaye effect is in fact a continuous flow phenomenon. We show that the Kaye effect works for many common fluids, including shampoos and liquid soaps. We reveal its physical mechanism (formation, stability and disruption) through highspeed imaging. The measurements are interpreted with a simple theoretical model including only the shear thinning behaviour of the liquid; elastic p... 


Title

Damped Oscillations





Abstract 
In physics, damping is an effect that reduces the amplitude of oscillations in an oscillatory system, particularly the harmonic oscillator. This effect is linearly related to the velocity of the oscillations. This restriction leads to a linear differential equation of motion, and a simple analytic solution. In mechanics, damping may be realized using a dashpot. This device uses the viscous drag of a fluid, such as oil, to provide a resistance that is related linearly to velocity. Source : Wikipedia 


Title

How Airplanes Fly





Abstract 
The simple physics of aerodynamically generated lift and drag and other forces that enable an aircraft to fly is discussed. A fluid flowing past the surface of a body exerts a surface force on it. Lift is defined to be the component of this force that is perpendicular to the oncoming flow direction.It contrasts with the drag force, which is defined to be the component of the surface force parallel to the flow direction. If the fluid is air, the force is called an aerodynamic force. An



Title

Turbulent Boundary Layer (APS Gallery Submiss...





Abstract 
Highquality movie of a turbulent boundary layer direct numerical simulation (DNS) and largeeddy simulation (LES) performed in 2010, reaching up to Re_theta=4300. Simulations were performed with up to 7.5 billion grid points on the Ekman cluster at KTH Stockholm. More information and simulation data: http://www.mech.kth.se/~pschlatt/DATA. Movie with better resolution: http://arxiv.org/abs/1010.4000\r\n\r\nResults of this DNS are described in Schlatter and Orlu, 2010, Journal of Fluid Mechanics, 659, 116126.\r\n\r\nThe simulations use a spectral discretisation of the incompressible NavierStokes equations on a grid with up to 8192x513x768 spectral modes.\r\n\r\nSimulation code: Simson (http://www.mech.kth.se/~mattias/simsonuserguidev4.0.pdf)\r\n\r\nhttp://www.mech.kth.se/mech/info_staff.jsp?ID=216 

