Bernoulli principle

Head-Area Meters. The Bernoulli principle, the basis of closed-pipe differential-pressure flow measurement, can also be appHed to open-channel Hquid flows. When an obstmction is placed in an open channel, the flowing Hquid backs up and, by means of the Bernoulli equation, the flow rate can be shown to be proportional to the head, the exact relationship being a function of the obstmction shape. 

Two types of floater aozzles are curreafly ia use and they are based on two different principles. The Bernoulli principle is used ia the airfoil flotatioa aozzles, ia which the air flows from the aozzle parallel to the web and the high velocities create a reduced pressure, which attracts the web while keeping the web from touching the nozzles. The Coanda effect is used to create a flotation nozzle when the air is focused and thus a pressure pad is created to support the web as shown ia Figure 19. 

The impeller is attached to a shaft. The shaft spins and is powered by the motor or driver. We use the term driver because. some pumps are attached to pulleys or transmissions. The fluid enters into the eye of the impeller and is trapped between the impeller blades. The impeller blades contain the liquid and impart speed to the liquid as it passes from the impeller eye toward the outside diameter of the impeller. As the fluid accelerates in velocity, a zone of low pressure is created in the eye of the impeller (the Bernoulli Principle, as velocity goes up, pressure goes down). This is another reason the liquid must enter into the pump with sufficient cnergt. ... 

Bernoulli principle, 11 656-657 Berry pseudo-rotation, 16 62 Bertrandite, 3 638, 640-641 Bertrand lens, 16 470-471 Beryl, 3 638, 640 color, 7 329... 

In the earlier days of the petroleum age, many pipe experiments were conducted. In the quest for the magic formula, one was found to be the closest to utopia even to this day, called the Darcy formula. The Darcy formula is derived manually from the Bernoulli principle, which simply describes the energy balance between two points of a fluid flowing in a pipe. This energy equation is also applicable to a static condition of no flow between the two points. The classic Bernoulli energy equation [1] is ... 

In hollow stirrers the stirrer head is hollow and is connected via a hollow shaft to the gas space above the liquid. The suction generated behind the stirrer edges by rotation according to the Bernoulli principle can thus be used to supply gas to the liquid. Hollow stirrers are suitable for enhancing mass transfer in gas/liquid con-... 

If the kinetic energy of the propulsion jet (gas, steam, liquid) is utilized according to the Bernoulli principle for generating suction, the nozzles are referred to as ejectors or ejector nozzles. These are not dealt with here. 

At that time, other than syringes and a few spray systems for throat usage (based on the Bernoulli principle as used in the Flit fly spray) and the Rybar inhaler, separate device systems were virtually non-existent. 

Dundurs, J., Hamilton, W.S. (1954). Liquidjet disintegration. Northwestern University. Hamilton, W.S. (1953). Water tunnel teaches Bernoulli principle. Civil Engineering 2Ji 2y. 834./" Hamilton, W.S., Lidell, J.E. (1971). Fluid force analysis and accelerating sphere tests. Journal of the Hydraulics Division ASCE 97(HY6) 805-817. 

Bernoulli principle Named after the man who discovered this phenomenon, this is the principle that describes the lowering of pressure in a tube or channel when a gas (often air) moves quickly across the opening at a 90° or greater angle. For a simple check, put a straw in a glass of water, blow sideways across the dry end, and watch the water rise part way up the straw. 

The Bernoulli principle, that pressure decreases as velocity increases, explains why an airplane wing produces lift. 

The second important variable is the particle velocity v (see Eq. (4.3)). An increase in speed is accompanied by a decrease in pressure according to the Bernoulli principle. The fluctuation of fluid particles in the area of the amplitude... 

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