
	Where results make sense

Topic: Hydraulic jump

Related Topics

Hydraulics

Hydraulic machinery

Hydraulic fluid

Hydraulic ram

Pelton wheel

Pump

Launched roller coaster

Turbopump

Fluidics

Coney Island

Giovanola

Euroscepticism

Piston

Anton Schwarzkopf

	Anders Haaning's hydraulic jump page (Site not responding. Last check: 2007-10-14)
		A closer look at hydraulic jumps in the linear and radial cases, confirms Lord Rayleigh's criteria at least roughly, but also reveals that the structure of the flow is rather complicated.
		The radial case is stationary and the origin of the jump has to be sought in the fact that the layer, because of the radial spread, becomes very thin and the shear forces correspondingly large, which leads to separation.
		We describe experimental results on the circular hydraulic jump in a viscous fluid (ethylene-glycol mixed with water) in a setup, where the depth of the fluid far away from the jet is controlled.
	www.nbi.dk /~haaning/jumpside.html (740 words)

	Jump
		Jump, Little Children Jump, Little Children, is a band formed in 1994 that the line-up of musicians in the band was sta...
		Jump River, Wisconsin Jump River is a town located in 2000 census, the town had a total population of 311.
		Jump table In computer science, a jump table is a list of the addresses of a set of routines which can be selected by nu...
	www.brainyencyclopedia.com /topics/jump.html (579 words)

	Hydraulic
		Hydraulic despotism Hydraulic despotism is a term for crops, while bad subjects were starved of water so that their crop...
		Hydraulic fill A hydraulic fill is an embankment or other fill in which the materials are deposited in place by a flowin...
		Hydraulic fluid Hydraulic fluids are a large group of liquids made of many kinds of chemicals.
	www.brainyencyclopedia.com /topics/hydraulic.html (252 words)

	Hydraulics
		Hydraulics is a branch of science and engineering concerned with the use of liquids to perform mechanical tasks.
		The word "hydraulics" comes from the Greek word ὑδϱαυλικός (hydraulikos) which in turn comes from ὕδϱαυλος meaning water organ which in turn comes from ὕδωϱ (water) and αὐλός (pipe).
		One of the founders of modern hydraulics was Benedetto Castelli, a student of Galileo Galilei.
	www.sciencedaily.com /encyclopedia/hydraulics (229 words)

	Gallery of Fluid Mechanics: Hydraulic Jumps and Bores (Site not responding. Last check: 2007-10-14)
		Hydraulic jumps are one of the most familiar fluid mechanics phenomena seen in day-to-day life.
		In such courses, the hydraulic jump is defined as a rapid, nearly instantaneous jump in the water depth.
		The relation between the bore and the stationary hydraulic jump is similar to that between a propagating shock wave and a stationary normal shock.
	www.galleryoffluidmechanics.com /waves/hjump.htm (406 words)

	Surface Tension and the Hydraulic Jump
		The dominant influence of fluid viscosity on the jump radius was elucidated by Watson (1964), who developed an appropriate description of the boundary layer that develops from the lower boundary.
		We have recently examined the influence of surface tension on the circular hydraulic jump, both its size and stability, through a combined theoretical and experimental investigation.
		The influence of surface tension on the circular hydraulic jump.
	www.mit.edu /people/jeffa/jump.htm (302 words)

	TEC - Hydraulic engineer providing consulting and expert witness services for model studies
		Near the middle, the flow generally forms an oblique hydraulic jump with significant circulation on the apron under certain flow conditions.
		Hydraulic models are often constructed of wood, sheet metal, plexiglass and other inexpensive and easy to use building materials.
		A primary objective of the model study was to determine the most economical and hydraulically efficient method of dissipating the energy at the toe of the embankment during floods which would overtop the embankment (greater than 500 year floods).
	www.tullisengineering.com /htmlFolder/hydraulic_models/model_benefits.htm (4644 words)

	Air Entrainment at Hydraulic Jump (Site not responding. Last check: 2007-10-14)
		Hydraulic jumps occur in many open-channel flow situations.
		The front of a hydraulic jump is highly unsteady and as such is capable of entraining significant amounts of air.
		A summary of air entrainment by hydraulic jumps is given in the monograph, “Hydraulic Design Considerations,” ed.
	www.flow3d.com /Appl/hydrajump.htm (329 words)

	Intel STS Results \| Science Service
		Understanding the properties of hydraulic jump leads to a greater understanding of fluid dynamics, important in industry and astrophysics.
		Hydraulic jump happens when a jet of water hits a horizontal surface and spreads out at a rapid rate.
		Hydraulic jumps occur where rivers flow into the ocean and must be taken into consideration in river restoration.
	www.sciserv.org /sts/61sts/Pelzer.asp (202 words)

	Rocks, Rapids and the Hydraulic Jump (Site not responding. Last check: 2007-10-14)
		The geomorphology and hydraulics of the Grand Canyon are complex subjects.
		Because the main ingredients for a hydraulic jump are swift water and quickly changing depths, rapids are perfect incubators.
		As the river rose the old “Crystal Hole” was replaced by a large hydraulic jump, (Normal Wave) perpendicular to the river current and about 100 feet downstream of the old hole.
	www.gcrg.org /bqr/6-3/hydraulic.htm (2842 words)

	Exercises to support the title The Hydraulics of Open Channel Flow by Hubert Chanson published by Arnold
		Considering a hydraulic jump in a rectangular horizontal channel, sketch the flow and write the following basic equations across the jump: (a) continuity equation, (b) momentum equation and (c) energy equation.
		Consider a hydraulic jump in a horizontal channel of trapezoidal cross-section.
		Considering a hydraulic jump in a horizontal rectangular channel of constant width and neglecting the friction force, apply the continuity, momentum and energy equations to the following case: Q = 1500 m³/s, B = 50 m.
	www.apnet.com /companions/0340740671/exercises/exercisesP1-4.htm (1698 words)

	Hydraulic Jump as “Mixing Layer” (Site not responding. Last check: 2007-10-14)
		In this investigation the character of the turbulence in the jump, and therefore of the air-entrainment mechanism, is controlled by the use of drag-reducing soluble additives.
		The photographs presented in the paper show that the remaining air bubbles act as flow tracers and reveal a turbulent structure in the upper part of the jump very similar in appearance to that observed for a turbulent mixing layer in a wind tunnel using shadow refractography.
		Measurements of expansion angles for the turbulence structures in the jump agree well with wind-tunnel measurements of expansion angles for the turbulent mixing layer between coflowing airstreams with a velocity difference.
	www.pubs.asce.org /WWWdisplay.cgi?8904967 (189 words)

	Charles Bloom's : Hydraulic Jump
		The Hydraulic Jump is an intriguing theoretical problem in fluid mechanics, partly because it is so well known, but still not well handled by theory (a paper by Tomas Bohr in April, 1997 offers a promising new approach, but this has not yet been fully explored).
		This is a sort of survey of analytic models of the jump, with some new work on these models, and the unification of all the different models.
		Bohr's newest work is examined in some new ways, and we find a prediction for the width of the jump, and the fact that separation and the jump are inherently tied : seeking the radius at which separation occurs may be best formula for finding the radius of the jump.
	www.cbloom.com /hydraulic (528 words)

	CE-266 Experiment #8 (Site not responding. Last check: 2007-10-14)
		The instructor or TA will establish a strong hydraulic jump in the flume immediately downstream from the sluice gate.
		You must be prepared to measure the manometer delta H, water surface elevation in the head tank, and the depth in the supercritical and subcritical regions across the hydraulic jump.
		Calculate the change in depth across the hydraulic jump for the laboratory flow conditions using the sequent depth equation derived in class.
	www.engr.uconn.edu /~ogden/ce266/exp_8.html (338 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		A hydraulic jump has been observed with the airborne backscatter lidar LEANDRE 1 (Lidar embarqué pour l'Etude des Aérosols, des Nuages, des interactions Dynamique-Rayonnement et du cycle de l'Eau) at the top of the atmospheric boundary layer (ABL) during a Tramontane event in the framework of the Pyrénées experiment (PYREX).
		An analytical fluid mechanics model is used to interpret lidar observations in connection with in situ measurements and to study the sensitivity of the hydraulic jump triggering to the boundary conditions.
		Using inflow and outflow boundary conditions as well as the reduced gravity prescribed from in situ measurements, the model is able to diagnose the presence of a hydraulic jump at the location suspected from the lidar observations.
	www.aero.jussieu.fr /themes/MAE/articleTramontaneHJ_P2.html (322 words)

	Publications of Tomas Bohr
		With C. Ellegaard, A. Espe Hansen and A. Haaning: "Hydraulic Jumps, Flow Separation and Wave Breaking: an Experimental Study." Physica B, With J. Lundbek Hansen: "Chaotic Particle Motion under Linear Surface Waves" J.
		Averaging theory for the structure of hydraulic jumps and separation in laminar free surface flows Phys.
		With Farid Bouamrirene and Daniel Bonn: "The one-dimensional hydraulic jump".
	dcwww.fys.dtu.dk /~tbohr/Publications.html (1601 words)

	Water Waves: Water waves in your kitchen (Site not responding. Last check: 2007-10-14)
		One nice example of water waves is the hydraulic jump seen in the photograph at the right.
		Just as in your course on engineering fluid mechanics, the hydraulic jump is a rapid or sharp increase in the water depth.
		In front of the hydraulic jump the flow is necessarily supercritical, i.e., the flow speed is faster than the wave speed, and any obstacles placed in this flow will generate V-shaped waves which are both similar to and mathematically/physically analogous to Mach waves in a supersonic air flow.
	www.fluidmech.net /tutorials/ocean/kitch.htm (327 words)

	Control of Hydraulic Jump by Abrupt Drop (Site not responding. Last check: 2007-10-14)
		For many applications it is desirable to maintain a free discharge through a sluice.
		For these situations a hydraulic jump may be used to hold back the tailwater.
		In situations where the downstream depth is larger than the sequent depth for a normal jump, a drop in the channel floor may be used to ensure a jump (note: the fluid is colored by turbulent kinetic energy).
	www.flow3d.com /appl/hdrjump.htm (122 words)

	47145 Hydraulics - Hydraulic Jump Experiment (Site not responding. Last check: 2007-10-14)
		To investigate the formation of a hydraulic jump.
		The sluice gate is adjusted until a hydraulic jump is formed.
		The conjugate depths across the jump are measured.
	services.eng.uts.edu.au /~simonb/lab01.htm (177 words)

	Gallery of Fluid Mechanics: Hydraulic jump in the kitchen (Site not responding. Last check: 2007-10-14)
		The "kitchen sink" hydraulic jump is an excellent example of a very rapid depth change.
		By placing obstacles in the region between the jet and the jump, Froude waves can be generated, thus illustrating the supercritical nature of the flow before the jump.
		Another concept which is easily illustrated in the sink is the idea that a bore is just a moving hydraulic jump.
	www.galleryoffluidmechanics.com /waves/sink.htm (266 words)

	Exercises to support the title The Hydraulics of Open Channel Flow by Hubert Chanson published by Arnold
		An energy dissipator (hydraulic jump type) is to be designed downstream of an undershoot sluice gate.
		An overflow spillway is to be designed with an uncontrolled ogee crest followed by a stepped chute and a hydraulic jump dissipator.
		An overflow spillway is to be designed with an un-gated broad-crest followed by a smooth chute and a hydraulic jump dissipator.
	www.apnet.com /companions/0340740671/exercises/exercisesP4-17.htm (1982 words)

	Nalamuthu Rajaratnam -Technical Publications (Site not responding. Last check: 2007-10-14)
		Rajaratnam, N. and Katopodis, C. Hydraulics of culvert fishways III: weir baffle culvert fishways.
		Rajaratnam, N. The hydraulic jump as a wall jet.
		GovindaRao, N.S. and Rajaratnam, N. The submerged hydraulic jump.
	www.civil.ualberta.ca /~NRajaratnam/PAPERS.HTM (2134 words)

	Hydraullic Jumps in Sinks and Channels (Site not responding. Last check: 2007-10-14)
		A hydraulic jump is a sudden rise in
		The channel jump consisted of water flowing laterally through a constriction and back into the wider channel.
		The jump is at the far left of the picture.
	gore.ocean.washington.edu /people/clare/jump.html (213 words)

	Untitled Document (Site not responding. Last check: 2007-10-14)
		Hydraulic jump is an open-channel flow phenomenon which occurs with an abrupt change in flow depth from a small to a large depth over a short distance.
		It is often seen at the end of a dam spillway or with the discharge from a sluice gate.
		The jump's downstream depth and velocity can be determined by application of Newton's 2nd Law of Motion.
	cagesun.nmsu.edu /~nkhandan/jump.html (73 words)

	53:071 Principles of Hydraulics & Hydrology (Homework Problem) (Site not responding. Last check: 2007-10-14)
		Determine the downstream depth (in m) required to form a hydraulic jump.
		Determine the change in specific energy (in m) if the hydraulic jump occurs.
		Determine the fraction of the energy specific lost in the jump (i.e., fraction of the initial specific energy from part b).
	www.engineering.uiowa.edu /~water/problems/hw25.html (127 words)

	Separation and Pattern Formation in Hydraulic Jumps (ResearchIndex) (Site not responding. Last check: 2007-10-14)
		Abstract: We present theory and experiments on the circular hydraulic jump in the stationary regime.
		In the experiments the external height is controlled, and a series of transitions in the flow structure appears.
		First the steepening of the jump causes a transition akin to the breaking of a wave, and subsequently a series of shapes appear, which break the azimuthal symmetry.
	citeseer.ist.psu.edu /bohr97separation.html (329 words)

	[No title] (Site not responding. Last check: 2007-10-14)
		The supercritical flow gives way to % a hydraulic jump downstream.
		As the gate lowers less than the % initial y2 alternate, it becomes a choke.
		The animation shows both the % y1 depth increasing, the y2 depth decreasing, and the energy loss in the % hydraulic jump (as evidenced by y3 versus y1) as increasing as the gate % gets lower and lower.
	www.wam.umd.edu /~moglen/688R/gatejump.m (139 words)

	STANDING - Online Information article about STANDING
		SPRING (from " to spring," " to leap or jump up," " burst out," O. Eng., springau, a common Teut.
		The water finds the passage through tl and its wetted perimeter x; and from these the hydraulic mean one of the branches less obstructed than through the others; the depth m can be calculated.
		Then the needle is fixed, and the apparatus carrying the graduated circle oscillates.
	encyclopedia.jrank.org /SOU_STE/STANDING.html (7240 words)

	[No title]
		Determine the sequent depth for a hydraulic jump.
		3.8 A spillway chute and the hydraulic jump stilling basin at the end of the chute are rectangular in shape with a width of 80 ft. The floor of the stilling basin is at an elevation 787.6 ft above the datum.
		Finally, calculate the sequent depth, y3(, for a hydraulic jump in the flume with an upstream depth of 1.0 cm: Now because the tailwater depth, y3, is greater than the sequent depth, the jump will be drowned out just downstream of the sluice gate.
	www.engr.colostate.edu /~tkg/classes/ce612_open-channel_flow/ce612_2002_assignment_6_solutions.doc (1634 words)

	Hydraulic Jump (Site not responding. Last check: 2007-10-14)
		For our 'standard' channel we have found that there is an M3 curve originating at a sluice gate (10+00) while a control section (for an M2 or M1 curve) occurs at a sill placed at the downstream brink (0+00).
		A hydraulic jump must occur between these two places.
		Similarly, from an energy analysis at the sill (0+05 to 0+00) determine the depth at 0+05 and carry out an M1 (or possibly a M2) upstream.
	egweb.mines.edu /eggn451/HydJumpS01.html (226 words)

	Newsletter Vol. 6 (2004): LMNO Engineering, Research, and Software - water, air, gas flow (Site not responding. Last check: 2007-10-14)
		Even though the D is the hydraulic diameter, (pi/4)D^2 is not equal to the area computed from the actual duct geometry.
		It is a hydraulic jump calculator for open channel flow in a rectangular channel.
		Concrete blocks may be installed in a channel downstream of a spillway in order to force a jump to occur thereby reducing the velocity and energy of the water.
	www.lmnoeng.com /Newsletters/newsletter6.htm (2036 words)

Try your search on: Qwika (all wikis)