Generating dynamically controllable oscillatory fluid flow
IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0412424
(1999-10-05)
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발명자
/ 주소 |
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출원인 / 주소 |
- Ramot University Authority for Applied Research and Industrial Development, ILX
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
A method for generating dynamically controllable oscillatory fluid flow, and corresponding device and system for implementing the method thereof. Based on a unique configuration and operation of a driver, a chopper, a flow guide, and connectors, or, alternatively, a combined driver/chopper unit, a f
A method for generating dynamically controllable oscillatory fluid flow, and corresponding device and system for implementing the method thereof. Based on a unique configuration and operation of a driver, a chopper, a flow guide, and connectors, or, alternatively, a combined driver/chopper unit, a flow guide, and connectors, for generating dynamically controllable oscillatory fluid flow, in a simple and efficient manner, featuring the capability of producing a zero mean oscillatory fluid flow rate, and oscillation parameters of high frequency, up to about 1 kHz, high amplitude, and variable wave form. Optional valves are included in the device for increasing the range of mean rate of oscillatory fluid flow. From a constant circulatory fluid flow, a component of oscillatory fluid flow is generated and is dynamically controllable according to the structure, configuration, and operation of the chopper and chopper components. Use of a flow guide in the device simply enables directional control or guidance of the oscillatory fluid flow component, by separating the oscillatory fluid flow component from the constant circulatory fluid flow, in order for the oscillatory fluid flow component to exit the device for input into another device or system utilizing the oscillatory fluid flow, according to a particular application. The invention is particularly applicable for achieving high levels of dynamically controllable oscillatory fluid flow, enabling improving performance of aerodynamic objects such as aircraft wings, translating to improving flight safety and efficiency.
대표청구항
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[ What is claimed is:] [1.] A method for generating dynamically controllable oscillatory fluid flow featuring oscillation parameters of variable frequency, variable amplitude, variable wave form, and variable mean flow rate, comprising the steps of:(a) driving a constant circulatory fluid flow along
[ What is claimed is:] [1.] A method for generating dynamically controllable oscillatory fluid flow featuring oscillation parameters of variable frequency, variable amplitude, variable wave form, and variable mean flow rate, comprising the steps of:(a) driving a constant circulatory fluid flow along a circuitous flow path by using a driver;(b) chopping said constant circulatory fluid flow by using a chopper, thereby generating the dynamically controllable oscillatory fluid flow from said constant circulatory fluid flow, such that said fluid flow becomes a superposition of two fluid flow components, first component is the dynamically controllable oscillatory fluid flow, second component is remaining said constant circulatory fluid flow;(c) guiding said superposition of said two fluid flow components and dividing said superposition of said two fluid flow components into said first component of the dynamically controllable oscillatory fluid flow and into said second component of said remaining constant circulatory fluid flow; and(d) guiding said first component of the dynamically controllable oscillatory fluid flow to exit said circuitous flow path and said second component of said remaining constant circulatory fluid flow to return to said driver.
이 특허에 인용된 특허 (3)
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Stouffer Ronald D. (Silver Spring MD) David Michael C. (Catonsville MD) Bray David A. (Columbia MD), Air outlet with aperiodic oscillation.
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Wygnanski Israel (4559 N. Placita de las Charcras Tucson AZ 85718), Method and apparatus for delaying the separation of flow from a solid surface.
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Morris Joseph W. (Columbia MD) Melbourne Thomas A. (Laurel MD), Oscillating reed and method.
이 특허를 인용한 특허 (1)
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Kjellgren, Per; Fredriksson, Sam, Aerodynamic properties of ground vehicles.
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