3 and Fig. 4 are respectively Karman vortex street generator front elevational schematic and schematic top plan view.On vortex generation body, be tied with wire coil.When static, in the sealing area that is surrounded by wire coil, about two/part has magnetic flux to pass.The vibration of the vortex generation body that the Karman vortex street that produces when fluid flows through causes is moved thereby drive wire coil, so the magnetic flux in the wire coil can become cyclic variation, so produced alternating current in the wire coil together. Fig. 4 Karman vortex street generator schematic top plan view. Should you view the Garrett Motion Inc. World Wide Web for personal or non-commercial use only, provided any copy of these documents that you make shall retain all copyright and other proprietary notices contained herein.
If in magnetic field, settle a wire coil, if pass through the relative motion in coil and magnetic field, let wire coil change in the projected area of magnetic line of force direction, the magnetic flux that passes coil is changed.According to the law of electromagnetic induction, the variation of magnetic flux can make and produce electric current in the coil, and this is the basic principle of generator.If pass to a wire coil that is placed in the fixing magnetic field to this power periodic, alternating direction that acts on the vortex generation body of above-mentioned Karman vortex street, can make wire coil produce vibration.If this periodic vibration has changed the magnetic flux that passes wire coil, then in coil, produced alternating current.Fig.
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This oscillating side force is due to the separation of the boundary layer from one side of the body, and then from the other in a regular manner. Alternatively, energy could also be harvested from the periodic motion associated with the coupled spring-mass system of the driver/passenger and seat assembly 72 via a peristaltic or a force-rectified pump assembly, and stored in a pressurized fluid reservoir 66. The pump 74 would then either directly apply and/or release pressure into some portion of the seal, or act as a pressurized reservoir for transduction of that force into the appropriate kind of energy for activation and/or deactivation of the active-material based actuator.
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Alternatively, pistons 72 upon which the seat assembly is mounted can be employed to forcibly push the fluid to raise the seat. 10, the energy associated with the rising/sitting of the passenger from a seat assembly 70 can be used to power a small pump to pressurize the fluid reservoir 66 (can be viscous, i.e., slow acting through a throttle valve, for instance, so as to be transparent with regards to the effort with which this occurs; displacement could also be small if a large area beneath the seat were employed). This apparatus structure is simple, volume is little, and is in light weight, can be regarded as the unit of a generating set.During use, let a plurality of the utility model Karman vortex street generators work together, to produce enough electric energy.
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The utility model alternating current generating means; Comprise housing; The two ends of said housing are provided with the arrival end and the port of export; Said enclosure interior is connected with vortex generation body by supporting on the flexibility with flexible the support down, and the both sides of said vortex generation body are provided with permanent magnet, and the N utmost point of said vortex generation body one side permanent magnet is extremely corresponding with the S of opposite side permanent magnet; The outer surface of said vortex generation body is tied with wire coil.
DY also is the maximum amount of movement when considering the gravity of vibration object.Thereby this device is can be through selecting the physical dimension of suitable eddy generator, and the parameters such as deformation coefficient of flexible support (spring) realize.The prerequisite of utilizing this device to produce alternating current is that flowing of fluid must be arranged, thereby this device also can be regarded as a kind of of wind energy generating plant. Wherein, ρ, V ∞, μ represents the density of fluid respectively, speed and dynamic viscosity coefficient; L represents the characteristic length scales of object.A large amount of theories with experiment showed, in Reynolds number from 50 to 500 scopes, can form stablely, paired, alternately arrangement, that direction of rotation is opposite, constant spacing in tail the zone in, be the whirlpool of core with the laminar flow.Reynolds number is greater than 200, the mobile three dimensional stress that is of tail, and the core of vortex becomes turbulent flow, mechanism still keeps laminar flow but vortex comes off.Such flow pattern is called as Karman vortex street.Fig.
5a closing outlet 140 such that pressurized gas can escape through outlet 142. The escape of gas serves to accelerate the oscillations and maintain boundary layer control over the trailing edge of the cylinders to continuously maintain the flow in a turbulent mode across the trailing edge thereby performing the same function as pitch control. Thereby in Karman vortex street, fluid can receive the periodically active force of alternate on the direction vertical with coming flow path direction.According to active force and reaction force principle, fluid can produce also that the one-period sexual intercourse becomes, the active force vertical with coming flow path direction to this bluff.Thereby object can come to produce vibration on the vertical direction of flow path direction.Should avoid the generation of this type phenomenon in the engineering, because this vibration can cause the tired of object and damage.
In the Karman vortex street at vortex generation body rear, vortex can be along coming flow path direction to move backward.Simultaneously because the existence of the circular rector of single vortex, this whirlpool can receive one with the incoming flow vertical direction on active force, i.e. Wherein, f is the shedding frequence of vortex, and its dependent variable as previously mentioned.The Strouhal number is generally fixed value 0.2.Thereby flow velocity can obtain through measuring the vortex shedding frequency.Widely used Karman vortex street flowmeter is exactly around this principle to process. 2 utilizes Karman vortex street to produce the schematic diagram of electric current.
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This utility model is utilized the above-mentioned background technology, designs a device, and the energy that it produces when fluid is flowed changes into electric energy. Dolor de espalda baja en las primeras semanas de embarazo . Examples of implementation: the utility model alternating current generating means operating state such as Fig. Below in conjunction with Figure of description and examples of implementation utility model is further specified. Below the water level is an intake 26 having sufficient screens or baffles to remove foreign particulate matter and input line 38 running from the intake 36 to a diaphragm pump, shown schematically at 40. The pump has an input connection 41, output lines 43 and output line 45. A cable 42 is disposed across the stream 30 with one end 44 operable connected to the diaphragm 46 of the pump 40 and the other end 48 coupled to a tensioning device 50. The tensioning device 50 may characteristically be a jack screw 52 or the other mechanical device to vary the tension on the cable 42. A series of wind sensors 54, 56, conventionally cup anenometers are utilized to average the wind velocity and provide an input to the tensioning device to appropriately vary the tension of the cable 42 in response to changes in velocity.
- A member, having a longitudinal axis, movably connected relative to said base
- Odontofobia: un miedo que empieza en la
- Averigua por el tipo de tintas usadas
- La linaza
- Esforçar-se massa
- The use of blocks mounted on top of each other
- Hinchazón de la lengua y garganta
When mounted on a rotating platform, the device will follow aximuth shifts in wind direction automatically without need for a wind vane. Garrett, the Garrett Advancing Motion logo, and all product names appearing on our Web sites are among the trademarks and/or service marks owned by Garrett Motion Inc., or its subsidiaries or affiliates, and no trademark or service mark or other license is granted in connection with the materials contained on any Garrett Motion Web site. Nothing contained herein shall be construed as conferring by implication, estoppel or otherwise any license to any patent, trademark or other intellectual property right of Garrett Motion Inc. Garrett Motion Inc. makes no representations or warranties that any use of the information contained on this Web site will not infringe any such patent, trademark or other intellectual property right of Garrett Motion Inc. Web site, such information shall be deemed to be non-confidential and Garrett Motion Inc.
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