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  Encyclopedia of Keywords > Information > Science > Physics > Fluid Dynamics > Cavitation   Michael Charnine

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  1. Cavitation is a common occurrence but is the least understood of all pumping problems.
  2. Cavitation is the rupture of a liquid or liquid- solid interface caused by reduction of local static pressure. (Web site)
  3. Cavitation is a general term used to describe the behavior of voids or bubbles in a liquid.
  4. Cavitation is a particularly important consideration when incompressible fluids, i.e., most liquids and liquids containing particles, are being pumped. (Web site)
  5. Cavitation is a troublesome low-pressure phenomenon.

Water Treatment

  1. Cavitation is, in many cases, an undesirable occurrence. (Web site)
  2. Cavitation means that cavities are forming in the liquid being pumped.
  3. The cavitation chamber comprises a single or multiple cavitating elements comprising a single or multiple orifices. (Web site)
  4. However, the method does not allow ballast water treatment without the occurrence of chemical reaction and does not use hydrodynamic cavitation. (Web site)
  5. A ballast water treatment based on ultra sound cavitation is disclosed in the US patent 6,770,248.


  1. For example, supercavitating torpedoes in use by the military envelope the torpedo in a large bubble of cavitation. (Web site)
  2. Cavitation can, however, be used as an advantage in design of very high performance propellers, in form of the supercavitating propeller.

Cavitation Bubbles

  1. The light emitted from cavitation bubbles is termed sonoluminesence. (Web site)
  2. These devices effect cavitation using sound waves and use the collapse of the cavitation bubbles to clean surfaces. (Web site)
  3. When the cavitation bubbles collapse, they focus liquid energy to very small volumes. (Web site)

Cavitation Occurs

  1. Major places where cavitation occurs are in pumps, on propellers, or at restrictions in a flowing liquid. (Web site)
  2. Cavitation can occur if an attempt is made to transmit too much power through the screw. (Web site)
  3. The degree to which permanent and temporary cavitation occur depend on the size, shape, and velocity of the bullet. (Web site)

Inertial Cavitation

  1. Inertial cavitation can also occur in the presence of an acoustic field. (Web site)
  2. Hence, inertial cavitation can occur even if the rarefraction in the liquid is insufficient for a Rayleigh-like void to occur.
  3. Inertial cavitation was first studied by Lord Rayleigh in the late 19th century when he considered the collapse of a spherical void within a liquid. (Web site)

High Velocity

  1. However, it should be clear from this equation that cavitation is more likely to occur where there is a high velocity and density fluid involved. (Web site)
  2. Discharge cavitation is believed to be the cause of the cracking of joints.Serious damages are caused by cavitation.

Ultrasonic Cleaning

  1. Cavitation can also be a boon in ultrasonic cleaning devices. (Web site)
  2. Such cavitation is often employed in ultrasonic cleaning baths, and will also be observed in pumps, propellers etc.

Extremely High

  1. Cavitation happens when water is forced to move at extremely high speed, e.g.
  2. Discharge cavitation occurs when the pump discharge is extremely high.
  3. Besides these requirements, the penetration of ultrasonic cavitation is small and its performance deteriorates with the scale-up. (Web site)
  4. Supercavitation is an extreme version of cavitation in which a single bubble is formed that envelops the moving object almost completely.

Ballast Water

  1. The treatment does not use cavitation or chemicals for treating ballast water. (Web site)
  2. The treated ballast water is pumped from the cavitation chamber (5) to the ship's ballast tank (8). (Web site)
  3. The ballast water is passed through cavitation chamber comprising cavitating elements.


  1. The physical process of cavitation inception is similar to boiling. (Web site)
  2. This can be achieved by focusing an intense laser pulse (optic cavitation) or with an electrical discharge through a spark. (Web site)
  3. The relationship between periodical cavitation inception and vibration was disclosed. (Web site)
  4. Study of cavitation - characteristics of centrifugal pump.
  5. Cavitation can be eliminated in air-operated double diaphragm pumps easier than with any other type of pump.


  1. For cavitation in plants, see Plant Physiology, by Taiz and Zeiger. (Web site)
  2. Such cavitation often occurs in pumps, propellers, impellers, and in the vascular tissues of plants. (Web site)


  1. In devices such as propellers and pumps, cavitation causes a great deal of noise, damage to components, vibrations, and a loss of efficiency. (Web site)
  2. Cavitation is quite noisy and can be sufficiently violent to physically damage valves, pipes and associated equipment.
  3. Marine propellors typically fail because of cavitation damage.
  4. At that point, the liquid will partially "boil" into bubbles of vapor and the subsequent collapse of the bubbles causes cavitation. (Web site)
  5. Using what he learned from the geometric shapes of creatures in the sea, Harman has designed a propeller that does not cause cavitation. (Web site)

Particular Problem

  1. The noise created by cavitation is a particular problem in submarines, as the noise destroys its stealth. (Web site)
  2. The noise created by cavitation is a particular problem for submarines, as it increases the chances of being detected by the enemy. (Web site)
  3. The noise created by cavitation is a particular problem for submarines, where it aids counter detection.


  1. The use of conventional propellers or turbines is not an option because the very hydrodynamic effects that make them work are disrupted by cavitation.
  2. None of these studies however dealt with use of hydrodynamic cavitation for disinfection of ballast water. (Web site)
  3. The efficacy of the heat treatment is not as high as other methods of disinfection based on chemical biocides or hydrodynamic cavitation. (Web site)
  4. We find that the viscous stress is huge near the tips of the aperture, thus cavitation could be induced. (Web site)
  5. The Tri-foiler has the sail plan for power to go much faster than 35-40kts, but they haven-t solved the problem of foil cavitation.


  1. Equation 3 will limit the velocity to a positive pressure at the intermediate high point to prevent cavitation.
  2. Blockage of the filter will cause cavitation and possibly failure of the pump.
  3. Cavitation also reduces efficiency dramatically.
  4. The low local fluid pressure regions create cavitation inside the valve. (Web site)
  5. These impurities, called cavitation nuclei, cause weak spots in the liquid and thus prevent it from supporting higher tensions. (Web site)

Gas Bubbles

  1. Ultrasonic cleaning baths usually utilize the inertial cavitation of microscopic gas bubbles for erosion of dirt from materials. (Web site)
  2. This damage results from the hammering action when cavitation bubbles implode in the flow stream.
  3. Ultrasonic cleaning baths usually utilise the inertial cavitation of microscopic gas bubbles for erosion of dirt from materials.
  4. Ohl, Dr. C.D. (2000) Luminescence from acoustic-driven laser-induced cavitation bubbles.
  5. Cavitation—bubble implosion—can make pieces of steel look as if they’ve been pummeled by artillery.


  1. Keywords: cavitation, sonoluminescence, computational fluid dynamics, sonofusion, sonochemistry, vortex engineering.
  2. Storey, B.D. & Szeri, A.J. 2001. A reduced model of cavitation physics for use in sonochemistry.
  3. Proteins are dissolved in a liquid which is then irradiated with intense ultrasound to induce acoustic cavitation.

Shock Wave

  1. Inertial cavitation is the process where a void or bubble in a liquid rapidly collapses, producing a shock wave. (Web site)
  2. Cavitation plays an important role for the destruction of kidney stones in shock wave lithotripsy ( lithotriptor).


  1. The physical process of cavitation is almost exactly the same as that which occurs during boiling.
  2. A supercavitating object uses this phenomenon in a much larger (and sustained) manner (hence the name super cavitation). (Web site)
  3. This is demonstrated in phenomenon such as ultrasound, sonication, sonoluminescence and sonic cavitation. (Web site)


  1. Cavitating water purification devices have also been designed, in which the extreme conditions of cavitation can break down pollutants and organic molecules. (Web site)
  2. Currently it is tested if cavitation can be used to transfer large molecules into biological cells ( sonoporation). (Web site)


  1. Cavitation is usually divided into two classes of behavior: inertial (or transient) cavitation and non-inertial cavitation. (Web site)
  2. Cavitation also probably plays a role in HIFU, a non-invasive treatment methodology for cancer. (Web site)
  3. Perform experimental and theoretical research on flow analysis, cavitation, transient, stability conditions and model testing of hydraulic machines.
  4. Under ideal conditions, cavitation preferably occurs for C v < 1 though under some conditions e.g.
  5. Cavitation and collapsing bubbles play a crucial role in lithotripsy, the destruction of kidney or bladder stones with focused, strong ultrasonic pulses.


  1. Some bigger diesel engines suffer from cavitation due to high compression and undersized cylinder walls. (Web site)
  2. That single plunger in a rotary IP experiences 8 times as much wear due to any cavitation than an IP with 8 separate plungers would.

Low Pressure

  1. Plants are generally able to repair cavitated xylem, for example with root pressure, but for others such as vines, cavitation often leads to mortality. (Web site)
  2. Such a low pressure cavitation bubble in a liquid will begin to collapse due to the higher pressure of the surrounding medium. (Web site)
  3. Should this situation develop, cavitation will occur across the high to low pressure side of the valve and premature pump failure will result.
  4. Cavitation has been observed to occur in turbulent shear flows when small bubbles are entrained into the low pressure regions (cores) of strong eddies. (Web site)


  1. When the pressure drops below its saturated vapor pressure, its create a plurality of cavities in the water-hence the term cavitation. (Web site)
  2. The pistol shrimp snaps a specialized claw to create cavitation, which can kill small fish. (Web site)
  3. One of the reasons is that ship propellers create and suffer from "cavitation": air bubbles formed, in part, by turbulence. (Web site)


  1. Information > Science > Physics > Fluid Dynamics
  2. Automation > Machinery > Machines > Pumps
  3. Science > Biology > Botany > Plants
  4. Nature > Matter > Liquids > Water
  5. Culture > Arts > Visual Arts > Design
  6. Books about "Cavitation" in

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  Short phrases about "Cavitation"
  Originally created: October 27, 2007.
  Links checked: January 15, 2013.
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