Glossary for Chapter 2
... vs. compressible, steady vs. nonsteady, and derivations through Newton’s law vs. the first law of thermodynamics. The most commonly used forms are for steady incompressible fluid flow derived through conservation of momentum. conservation laws: The fundamental principles upon which all engineering a ...
... vs. compressible, steady vs. nonsteady, and derivations through Newton’s law vs. the first law of thermodynamics. The most commonly used forms are for steady incompressible fluid flow derived through conservation of momentum. conservation laws: The fundamental principles upon which all engineering a ...
Motion with Air Resistance
... Motion with Air Resistance The dissipative force in air or other fluids can generally be expressed in the form: fdiss = α v + β v 2 . Either term on the right-hand side of this equation may be important, depending on circumstances. The first term is most likely to be important in low-speed, streamli ...
... Motion with Air Resistance The dissipative force in air or other fluids can generally be expressed in the form: fdiss = α v + β v 2 . Either term on the right-hand side of this equation may be important, depending on circumstances. The first term is most likely to be important in low-speed, streamli ...
Chapter 2 - CP Physics
... • The internal friction is associated with the resistance between two adjacent layers of the fluid moving relative to each other ...
... • The internal friction is associated with the resistance between two adjacent layers of the fluid moving relative to each other ...
Section_11_Similarit..
... There are several other non-dimensional parameters that appear in the literature that are combinations of Se and S . For example, Pr S / Se / ( / 0 ) is called the magnetic Prandtl number. It measures the relative effects of viscous and resistive diffusion. Similarly, H SSe is called the H ...
... There are several other non-dimensional parameters that appear in the literature that are combinations of Se and S . For example, Pr S / Se / ( / 0 ) is called the magnetic Prandtl number. It measures the relative effects of viscous and resistive diffusion. Similarly, H SSe is called the H ...
Flow of Matter and Energy Through an Ecosystem
... • Entropy: chaos, disorder of molecules or energy – Second law of themodynamics ...
... • Entropy: chaos, disorder of molecules or energy – Second law of themodynamics ...
ENSC 283 Week # 10, Tutorial # 6
... where /2 . This velocity profile is shown in the following figure. Note that even though the belt in moving upward, for 1 1 (e.g. for fluids with small enough viscosity or with a small enough belt speed) there are portions of the fluid that flow downward (as indicated by / 2 0). It i ...
... where /2 . This velocity profile is shown in the following figure. Note that even though the belt in moving upward, for 1 1 (e.g. for fluids with small enough viscosity or with a small enough belt speed) there are portions of the fluid that flow downward (as indicated by / 2 0). It i ...
Lecture Notes for First Quiz - Atmospheric and Oceanic Sciences
... rise to a mixing phenomenon known as salt fingers Some buoyancy phenomena are dominated by variations in surface tension with temperature or with chemical concentrations (like soap in “color burst”) 6. Link to chaos theory For increasing Re or Ra, instabilities lead to turbulence. At low Re or Ra di ...
... rise to a mixing phenomenon known as salt fingers Some buoyancy phenomena are dominated by variations in surface tension with temperature or with chemical concentrations (like soap in “color burst”) 6. Link to chaos theory For increasing Re or Ra, instabilities lead to turbulence. At low Re or Ra di ...
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.""