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Hydraulic/Shock-Jumps in Protoplanetary Disks
Hydraulic/Shock-Jumps in Protoplanetary Disks

... of breaking waves can be understood by recognizing two effects: When the gas crosses the shock front, the shock-normal component of a fluid element’s velocity will be diminished by a factor given by the inverse of equation (3), while the tangential component will be preserved, allowing the flow to b ...
Controls of the behavior of marine debris flows
Controls of the behavior of marine debris flows

On the proceeding of a saturation front under ponded
On the proceeding of a saturation front under ponded

... SLUG, 2003; Huber et al., 2003; Sommer and Ullrich, 2004; Kreibich and Thieken, 2008). In this case, not only bank storage effects (Freeze, 1972) were responsible for water inflow from the river into the adjacent aquifers, but also vertical infiltrations from inundated areas contributed considerably ...
E-Modul
E-Modul

... laboratory core flow, which is far below the limit of turbulent flow. In case of reservoir flow, the ”normal” reservoir flow velocity is ca. 1 foot/day or 3,5m / s , which indicate that turbulent liquid flow under reservoir conditions is not very likely to occur. For gas, turbulent flow may occur i ...
HEFAT2012 9 International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
HEFAT2012 9 International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics

Characterization of flow contributions to drag and lift of a circular
Characterization of flow contributions to drag and lift of a circular

design and evaluation of performance of conical type draft
design and evaluation of performance of conical type draft

flow around wall-mounted cylinders with different geometries
flow around wall-mounted cylinders with different geometries

Download PDF
Download PDF

... characterized with low velocities, very little mixing, and sometimes high fluid viscosity. When a fluid’s flow profile has a Reynolds number between 2000 and 4000, it is in a transitional zone. A Reynolds number above 4000 is called turbulent flow. This is characterized by high velocity, low viscosi ...
956 aperture 5
956 aperture 5

The Conversion of Fluid Flow into Laminar Flow Device
The Conversion of Fluid Flow into Laminar Flow Device

Chapter 3: Channel Controls
Chapter 3: Channel Controls

... If the entrance is not properly shaped, a contraction of the jet occurs as in sketches a, c and h, and the area of the jet is not as great as the area of the orifice or tube. For properly rounded approaches to orifices as in sketches b and e, and the constant diameter short tubes, the diameter of th ...
Viscous Dissipation Effects For Liquid Flow In Microchannels
Viscous Dissipation Effects For Liquid Flow In Microchannels

... density, _ is the viscosity of the fluid, and cp is the specific heat capacity at constant pressure. In the above governing equations, the conservation of energy equation ( 4) is also considered not because of the existence of any external heat source, but because energy comes from the viscous effec ...
Simulation of Flow and Heat Transfer Through Packed Beds of
Simulation of Flow and Heat Transfer Through Packed Beds of

fluid transport mechanisms in microfluidic devices
fluid transport mechanisms in microfluidic devices

Introduction of compressible flow
Introduction of compressible flow

... entropy, s, has to be introduced. The entropy basically places limitations on which flow processes are physically possible and which are physically excluded. The entropy change between any two points in the flow is given by ; ...
PPT Version
PPT Version

... – C. Estan, and G. Varghese: “New directions in traffic measurement and accouning”, SIGCOMM 2002 ...
as a PDF
as a PDF

Advanced Hydraulics Prof. Dr. Suresh A. Kartha Department
Advanced Hydraulics Prof. Dr. Suresh A. Kartha Department

Fluid Flow - Binus Repository
Fluid Flow - Binus Repository

Three-dimensional traveling-wave solutions in
Three-dimensional traveling-wave solutions in

... phase space dynamics. Recently, other types of finite amplitude steady solutions @2,3# in plane Couette flow are found numerically by extending a two-dimensional solution branch bifurcating from a laminar plane Poiseuille flow to the plane Couette flow region. None of the experimental counterparts o ...
Slide 1
Slide 1

... It will be seen, therefore, that at high Mach numbers, the temperature rise across a normal shock may be high enough to cause specific heat changes, dissociation, and, at very high Mach numbers, ionization. As a result of these processes, conventional shock relations do not apply. For example, as a ...
Coastal Processes and Sediment Transport
Coastal Processes and Sediment Transport

Sediment transport via dam-break flows over sloping
Sediment transport via dam-break flows over sloping

ent 257/4 fluid mechanics
ent 257/4 fluid mechanics

... Streamlines, Pathlines and Streaklines A streamline in a fluid flow is a line tangent to which at any point is in the direction of velocity at that point at that instant. • Streamlines are, therefore, equivalent to an instantaneous snap-shot indicating the directions of velocity in the entire flow ...
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Hydraulic jumps in rectangular channels



Hydraulic jump in a rectangular channel, also known as classical jump, is a natural phenomenon that occurs whenever flow changes from supercritical to subcritical flow. In this transition, the water surface rises abruptly, surface rollers are formed, intense mixing occurs, air is entrained, and often a large amount of energy is dissipated. In other words, a hydraulic jump happens when a higher velocity, v1, supercritical flow upstream is met by a subcritical downstream flow with a decreased velocity, v2, and sufficient depth. Numeric models created using the Standard Step Method or HEC-RAS are used to track supercritical and subcritical flows to determine where in a specific reach a hydraulic jump will form. There are common hydraulic jumps that occur in everyday situations such as during the use of a household sink. There are also man-made hydraulic jumps created by devices like weirs or sluice gates. In general, a hydraulic jump may be used to dissipate energy, to mix chemicals, or to act as an aeration device.To produce equations describing the jump, since there is an unknown energy loss, there is a need to apply conservation of momentum. To develop this equation, a general situation in which there may or may not be an energy loss between upstream and downstream, and there may or may not be some obstacle on which there is a drag force Pf is considered. however, for a simple or classic hydraulic jump the force per unit width(Pf) equals 0. From there the momentum equation, and the conjugate depths equation can be derived.
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