US8928167B2 – Bluff Body Turbine – Google Patents

La Gerencia de Atención Integrada de Hellín aborda el.. FIG. 1 a is a top view of a bluff body turbine having a general wedge shape and having cylindrical vortex inducing features. In the art of fluid dynamics, vortex formation and shedding is a known phenomenon and the forces generated are known to randomly bias bluff bodies in response thereto.

  • Competencias de los profesionales de Enfermería
  • Inflamación de uno de los testículos o ambos (orquitis)
  • Epidemiología de los síndromes dolorosos
  • Terapia sistémica

The materials described are water resistant as the bluff body of the present embodiment is for being disposed in bodies of water or exposed to rain. The use of bluff bodies in air or water to generate electricity is another example of a harnessing the power of renewable source of energy. The disclosed bluff body energy converter comprises a complex feedback system to determine when the natural frequency characteristics of the bluff body change. Further, the geometry shown results in controlled vortex shedding that does not present a danger to the bluff body.

Dolores Musculares Y Fiebre

FIG. 2 f is a top view of a bluff body turbine having a general wedge shape and having cylindrical vortex inducing features disposed in a river and showing shedding vortices for moving in a second other direction. FIG. 2 d is a top view of a bluff body turbine having a general wedge shape and having cylindrical vortex inducing features disposed in a river and showing motion due to the force of the river and vortex formation. Vortex shedding is a problem that needs addressing, for example in chimney design as when the fluid flow is at a critical velocity, the vortex shedding results in a resonant oscillation.

Tecnicas De Relajacion

It is the formation and shedding of vortices that results in BBT 100 oscillation back and forth. For example, BBT 500 is designed to optimize energy transfer from a single body of water, river 507, of varying fluid flow rates. For example, bluff body 501, comprising half cylinders of diameter d1, is designed to optimize energy transfer from river 507 to BBT 500 for known fluid flow rate f1. The shape of bluff body 300 is designed to optimize the energy transfer from oceanic current forces to the electric power generation device for a known current velocity, v2, in ocean 308 near oilrig 303. Half cylinders 308 a-b each have a diameter d1. A rough surface on the exterior walls of sidewalls 103 a and 103 b and cylinders 104 a-b increases a likelihood of the vortices to form.

Exterior wall of sidewalls 103 a and 103 b and cylinders 104 a-b comprise a rough surface for supporting formation of vortices 204 a and 204 b. Sidewall 103 a faces in a first direction and sidewall 103 b faces in an approximately opposing second direction. Sidewall 309 a is facing in a first direction and sidewall 309 b is facing in an approximately opposing second direction.

Dolor Neuropático Pdf

BBT 100 comprises a bluff body 101, a pivot 102 and a power generator, for example a stator 107 and a rotor 106. Bluff body 101 freely rotates 360° about pivot 102, which is in an approximately fixed position. Dolor de espalda y caderas . Disposed in a flowing fluid moving at velocity v2, vortices form alternately on both sides of bluff body 401-vortex shedding-causing it to oscillate in a clockwise and counter clockwise rotation. Alternatively, bluff body 101 is restricted in its rotation about the axis of rotation. The rotor is coupled to bluff body 401, and the stator is coupled to pivot 402, such that in use, the rotor moves rotationally about the stator as bluff body 401 moves about pivot 402. The relative motion between the stator and the rotor generates electric current.

Alternatively, vortex inducing features are other than enclosed shapes.

Mariana For known current velocity v2, the distance travelled by bluff body 301 along the x-axis is 1.7 times diameter d1. In accordance with an embodiment of the invention there is provided an apparatus for generating electric current comprising a pivot, a bluff body comprising a vortex inducing feature and shaped for when disposed in a flowing fluid with velocity v1 having a predetermined oscillating movement of the bluff body in alternating directions about the pivot induced for resulting in relative motion therebetween, and a generator coupled between the pivot and bluff body for generating electric current in response to the relative motion. Alternatively, vortex inducing features are other than enclosed shapes. Alternatively, the pivot 506 is attached to a fixed structure such that the force of the water flow substantially other than causes pivot 506 to rotate. As water flows past cylinders 104 a and 104 b of bluff body 101, vortices 204 a and 204 b form and shed proximate cylinders 104 a and 104 b, as shown in FIG.

Construction material of bluff body 101 is rigid and water resistant for other than absorbing significant proportions of the forces of the fluid flow, for enhanced movement of bluff body 101 as forces from the fluid flow act on BBT 100. An example of a bluff body construction material is hard plastic. Also, a bluff body is constructed from material strong enough to endure forces exerted by the fluid flow. Referring to FIG. 3, shown is a BBT disposed in a flowing fluid, for example, an ocean 308. BBT 300 comprises a bluff body 301 and a pivot 302. Dolor muscular sin fiebre . The top of pivot 302 is coupled to a platform in the form of an oilrig 303 by arm 304. Alternatively, BBT 300 is fixed to a wharf, a rock, or another structure near or in ocean 308. BBT 300 comprises devices for power generation in the form of rotor 306 and stator 305. Bluff body 301 freely rotates 360° about pivot 302, which is in a fixed position and other than rotates.

FIG. 8 shows a bluff body turbine wherein the power generation through relative motion about a pivot is a pivot at which the bluff body turbine is other than supported. Vortices that occur about the bluff body cause it to move and an impedance matching system is employed for varying the natural frequency characteristics of the bluff body, such that it oscillates-moves back and forth-at a frequency. D/U, where D is the dimension of the bluff body perpendicular to the oncoming flow, U is the flow speed and f is the vortex shedding frequency. Shown in FIG. 4 a is a bluff body turbine comprising pivot 402 and a bluff body 401 comprising sidewalls 403 a-b and vortex inducing features 404 a-b. For example, half cylinders 501 a-b have diameter d1, half cylinders 502 a-b have diameter d2, and so forth. Half cylinders 308 a-b are located at the opposite end of sidewalls 309 a-b from pivot 302 along the length of bluff body 301, parallel to the y-axis.

Dolor Neuropático Periférico

Alternatively, BBT 300 is coupled to oilrig 303 via an arm attached to the bottom of pivot 302. Alternatively, the end of the bluff body disposed into the fluid flow is one of a point, round, and elliptical. According to an embodiment of the invention a bluff body turbine is provided comprising known vortex inducing features, disposed in a flowing fluid, for passively maintaining an oscillating motion at a given fluid flow rate.

Dolor Muscular Post Covid

FIG. 4 d shows another exemplary vortex inducing feature. Another exemplary construction material of the bluff body is metal, for example steel, covered with a coating to protect the bluff body from the elements. In this specific and non-limiting example, the distance travelled by bluff body 101 is 1.7 times d1. Referring to FIG. 2 d, shown is BBT 100. Inyecciones para dolor de espalda . In this example, cylinders 104 a and 104 b have a diameter, d1. Referring to FIGS. 4 b-4 d, shown are BBT 405-407, respectively. Referring to FIG. 2 a, BBT 100 is disposed in a flowing fluid, for instance, in a river 200. The directional flow of river 200 is indicated by arrow 203, along the y-axis, and BBT 100 is disposed in river 200 in a downstream position. BBT 400 also comprises devices for power generation (not shown) in the form of a rotor and stator.

Dolor Espalda Lado Derecho

BBT 100’s design permits the uneven action of a natural flowing fluid to swing the BBT into whatever path the flowing fluid takes. Vortex shedding is caused when a fluid flowing past a blunt object creates alternating low pressure zones on the downstream side of the blunt object. FIG. 1 b is a side view of the bluff body turbine of FIG. FIG. 2 b is a side view of the bluff body turbine of FIG. Such a passive bluff body is advantageous both due to its simplicity of manufacture and due to its simplicity of installation and use.