00410021.pdf
... and must be cleaned (small details are usually eliminated and overlapping surface patches are trimmed- before it can be used for computational analysis). A smooth water-tight surface mesh is then generated to serve as a boundary condition for the volume mesh. There are mainly two types of approaches ...
... and must be cleaned (small details are usually eliminated and overlapping surface patches are trimmed- before it can be used for computational analysis). A smooth water-tight surface mesh is then generated to serve as a boundary condition for the volume mesh. There are mainly two types of approaches ...
Lecture
... Notation conventions in continuum mechanics vary greatly. It is not uncommon to see ∇ · v, div v, or vi,i for the same quantity. We will introduce the last quantity here. While it might not be as familiar looking as the others, it greatly simplifies calculations when second order tensors are involve ...
... Notation conventions in continuum mechanics vary greatly. It is not uncommon to see ∇ · v, div v, or vi,i for the same quantity. We will introduce the last quantity here. While it might not be as familiar looking as the others, it greatly simplifies calculations when second order tensors are involve ...
Electrostatic turbulence in tokamaks on transport time scales
... including all the axisymmetric neoclassical and zonal flow radial electric field effects, as well as the turbulent transport normally associated with drift instabilities. Neoclassical electric field effects are particularly difficult to retain since they require evaluating the ion distribution funct ...
... including all the axisymmetric neoclassical and zonal flow radial electric field effects, as well as the turbulent transport normally associated with drift instabilities. Neoclassical electric field effects are particularly difficult to retain since they require evaluating the ion distribution funct ...
What is Control of Turbulence in Crossed Vortexes! Dimitri Volchenkov
... transition from today’s studies of plasma physics to future electricity-producing fusion power plants. A successful fusion device has to contain the particles in a small enough volume for a long enough time for much of the plasma to fuse. Once fusion has begun, neutrons having a vast kinetic energy ...
... transition from today’s studies of plasma physics to future electricity-producing fusion power plants. A successful fusion device has to contain the particles in a small enough volume for a long enough time for much of the plasma to fuse. Once fusion has begun, neutrons having a vast kinetic energy ...
Fluid Flow Notes - The University of Manchester
... (There are others, notably Conservation of Angular Momentum and Conservation of Electric Charge.) Thanks to Einstein, Mass and Energy are now recognised as equivalent and interchangeable, such that it is more correct to speak of Conservation of (Mass and Energy), but in the absence of nuclear reacti ...
... (There are others, notably Conservation of Angular Momentum and Conservation of Electric Charge.) Thanks to Einstein, Mass and Energy are now recognised as equivalent and interchangeable, such that it is more correct to speak of Conservation of (Mass and Energy), but in the absence of nuclear reacti ...
Mass Transfer and Flow in Electrically Charged Micro- and
... transferring fluid from one place to another. Problems of this type have been investigated for a long time. There are a number of textbooks on the subject of flow driven by the presence of an electric field,6-9 among many others. The flow induced by electric fields is also an old subject, and in thi ...
... transferring fluid from one place to another. Problems of this type have been investigated for a long time. There are a number of textbooks on the subject of flow driven by the presence of an electric field,6-9 among many others. The flow induced by electric fields is also an old subject, and in thi ...
AIBO monocular depth perception through
... to the previous image and the lines indicate the corresponding vector of optical flow in those points. Note that the nearby points have a greater amount of flow (thus larger vector) than far away points. In this scene it is clear that optical flow can be used to get a sense of self-motion and at the ...
... to the previous image and the lines indicate the corresponding vector of optical flow in those points. Note that the nearby points have a greater amount of flow (thus larger vector) than far away points. In this scene it is clear that optical flow can be used to get a sense of self-motion and at the ...
The Theory of Lorentz and The Principle of Reaction
... disappears; then, the center of gravity of the system consisting of the matter and energy (regarded as a fictional fluid) has motion which is linear and uniform. Let us suppose, now, that at certain locations, there is destruction of electromagnetic energy, which is transformed into non-electrical e ...
... disappears; then, the center of gravity of the system consisting of the matter and energy (regarded as a fictional fluid) has motion which is linear and uniform. Let us suppose, now, that at certain locations, there is destruction of electromagnetic energy, which is transformed into non-electrical e ...
HEFAT2012 9 International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
... like the heart of computer, CPU is responsible for the main calculation and commands of computer. In order to achieve the goal of transistor growth as mentioned in Moore’s Law, the development of CPU has to give consideration to cost. Therefore, new process technology is urged to evolve continuously ...
... like the heart of computer, CPU is responsible for the main calculation and commands of computer. In order to achieve the goal of transistor growth as mentioned in Moore’s Law, the development of CPU has to give consideration to cost. Therefore, new process technology is urged to evolve continuously ...
Physical Principles - Thayer School of Engineering
... A control volume can be almost anything imaginable, a piece of atmosphere, a stretch of river, a whole lake, or even the entire troposphere. What matters most is that this volume be clearly defined (so we know unambiguously whether something is inside or outside it) and be practical (so the budget y ...
... A control volume can be almost anything imaginable, a piece of atmosphere, a stretch of river, a whole lake, or even the entire troposphere. What matters most is that this volume be clearly defined (so we know unambiguously whether something is inside or outside it) and be practical (so the budget y ...
09_Solids and Fluids
... It is the average density that matters; a boat made of steel can float because its interior is mostly air. An object’s density may be changed; submarines fill tanks with water to submerge, and with air to rise. ...
... It is the average density that matters; a boat made of steel can float because its interior is mostly air. An object’s density may be changed; submarines fill tanks with water to submerge, and with air to rise. ...
Turbulence
In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic property changes. This includes low momentum diffusion, high momentum convection, and rapid variation of pressure and flow velocity in space and time.Flow in which the kinetic energy dies out due to the action of fluid molecular viscosity is called laminar flow. While there is no theorem relating the non-dimensional Reynolds number (Re) to turbulence, flows at Reynolds numbers larger than 5000 are typically (but not necessarily) turbulent, while those at low Reynolds numbers usually remain laminar. In Poiseuille flow, for example, turbulence can first be sustained if the Reynolds number is larger than a critical value of about 2040; moreover, the turbulence is generally interspersed with laminar flow until a larger Reynolds number of about 4000.In turbulent flow, unsteady vortices appear on many scales and interact with each other. Drag due to boundary layer skin friction increases. The structure and location of boundary layer separation often changes, sometimes resulting in a reduction of overall drag. Although laminar-turbulent transition is not governed by Reynolds number, the same transition occurs if the size of the object is gradually increased, or the viscosity of the fluid is decreased, or if the density of the fluid is increased. Nobel Laureate Richard Feynman described turbulence as ""the most important unsolved problem of classical physics.""