RU97120290A - METHOD AND DEVICE FOR MANAGING TURBULENCE IN A BOUNDARY LAYER AND IN OTHER FLOW FIELDS Bounded by WALLS - Google Patents

METHOD AND DEVICE FOR MANAGING TURBULENCE IN A BOUNDARY LAYER AND IN OTHER FLOW FIELDS Bounded by WALLS

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Publication number
RU97120290A
RU97120290A RU97120290/06A RU97120290A RU97120290A RU 97120290 A RU97120290 A RU 97120290A RU 97120290/06 A RU97120290/06 A RU 97120290/06A RU 97120290 A RU97120290 A RU 97120290A RU 97120290 A RU97120290 A RU 97120290A
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RU
Russia
Prior art keywords
protrusions
depressions
flow
wall
units
Prior art date
Application number
RU97120290/06A
Other languages
Russian (ru)
Other versions
RU2191931C2 (en
Inventor
Сирович Лоренс
Й.Броники Люсьен
Левич Юджин
Карлссон Стьюр
Original Assignee
Орлев Сайентифик Компьютинг Лтд.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/766,380 external-priority patent/US5833389A/en
Application filed by Орлев Сайентифик Компьютинг Лтд. filed Critical Орлев Сайентифик Компьютинг Лтд.
Publication of RU97120290A publication Critical patent/RU97120290A/en
Application granted granted Critical
Publication of RU2191931C2 publication Critical patent/RU2191931C2/en

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Claims (12)

1. Способ регулирования турбулентности в пограничном слое или в других ограниченных стенками полях течения, имеющих турбулентную пристенную область у поверхности стенки, обладающую системой парных цилиндрических вихрей или полосок, расположенных у поверхности и распространяющихся в направлении течения, отличающийся тем, что вводят в пристенную область при помощи пассивного средства возмущающее воздействие, которое способствует образованию или подавляет образование парных цилиндрических вихрей, тем самым увеличивая или уменьшая турбулентность в поле течения.1. A method of controlling turbulence in a boundary layer or in other flow-limited fields of the walls, having a turbulent wall region near the wall surface, having a system of paired cylindrical vortices or strips located at the surface and propagating in the direction of flow, characterized in that they are introduced into the wall region at the help of a passive means, a disturbing effect that promotes the formation or suppresses the formation of paired cylindrical vortices, thereby increasing or decreasing the round buulence in the flow field. 2. Устройство для снижения турбулентного сопротивления в пристенной турбулентной области поля течения вблизи поверхности стенки, обладающей системой парных цилиндрических вихрей или полосок, примыкающих к поверхности, имеющих диаметр, функционально связанный с сопротивлением потока, отличающееся тем, что устройство включает средство для ввода в пристенную область пассивного возмущающего воздействия, подавляющего образование парных цилиндрических вихрей. 2. Device for reducing turbulent resistance in a near-wall turbulent region of a flow field near a wall surface having a system of paired cylindrical vortices or strips adjacent to a surface having a diameter functionally associated with flow resistance, characterized in that the device includes means for introducing into the wall region passive disturbing effect, suppressing the formation of paired cylindrical vortices. 3. Устройство по п.2, отличающееся тем, что средство ввода имеет форму двухмерной решетки выступов на упомянутой поверхности или впадин в ней. 3. The device according to claim 2, characterized in that the input means has the form of a two-dimensional lattice of protrusions on the said surface or troughs in it. 4. Устройство по п.3, отличающееся тем, что решетка содержит множество выступов, или впадин расположенных в последовательных колонках перпендикулярно направлению потока, причем выступы или впадины в последующем ряду расположены в шахматном порядке относительно выступов предыдущего ряда. 4. The device according to claim 3, characterized in that the lattice contains many protrusions, or depressions located in successive columns perpendicular to the direction of flow, and the protrusions or depressions in the next row are staggered relative to the protrusions of the previous row. 5. Устройство по п.4, отличающееся тем, что выступы или впадины расположены в шахматном порядке регулярно. 5. The device according to claim 4, characterized in that the protrusions or depressions are staggered regularly. 6. Устройство по п.4, отличающееся тем, что выступы или впадины расположены в шахматном порядке беспорядочно. 6. The device according to claim 4, characterized in that the protrusions or depressions are staggered randomly. 7. Устройство по любому из пунктов 3-6, отличающееся тем, что выступы или впадины выступают в поток на длину в диапазоне 5-15 единиц размера стенки, где единица размера стенки равна вязкости, деленной на квадратный корень из плотности и напряжения сдвига. 7. The device according to any one of paragraphs 3-6, characterized in that the protrusions or depressions protrude into the stream for a length in the range of 5-15 units of wall size, where the unit of wall size is equal to the viscosity divided by the square root of the density and shear stress. 8. Устройство по п.7, отличающееся тем, что выступы или впадины имеют V-образную форму, причем вершины выступов или впадины направлены против направления течения. 8. The device according to claim 7, characterized in that the protrusions or depressions are V-shaped, and the vertices of the protrusions or depressions are directed against the direction of flow. 9. Устройство по п.8, отличающееся тем, что угол при вершине выступов или впадины находится в диапазоне 50-90°. 9. The device according to claim 8, characterized in that the angle at the top of the protrusions or trough is in the range of 50-90 °. 10. Устройство по п. 8, отличающееся тем, что шаг между выступами или впадинами в рядах составляет один выступ или одну впадину приблизительно на 200-300 единиц размера стенки. 10. The device according to p. 8, characterized in that the step between the protrusions or depressions in the rows is one protrusion or one depression approximately 200-300 units of wall size. 11. Устройство по п. 8, отличающееся тем, что шаг между выступами или впадинами в направлении течения находится в диапазоне один ряд на 200-400 единиц размера стенки. 11. The device according to claim 8, characterized in that the step between the protrusions or depressions in the direction of flow is in the range of one row per 200-400 units of wall size. 12. Устройство по п.8, отличающееся тем, что размер выступов в направлении потока находится в диапазоне 150-250 единиц размера стенки. 12. The device according to claim 8, characterized in that the size of the protrusions in the direction of flow is in the range of 150-250 units of wall size.
RU97120290/06A 1996-12-09 1997-12-08 Device for reduction of turbulent resistance in boundary turbulent area of flow field near surface of wall RU2191931C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/766,380 US5833389A (en) 1996-12-09 1996-12-09 Apparatus for controlling turbulence in boundary layer and other wall-bounded fluid flow fields
US08/766,380 1996-12-09

Publications (2)

Publication Number Publication Date
RU97120290A true RU97120290A (en) 1999-09-10
RU2191931C2 RU2191931C2 (en) 2002-10-27

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RU97120290/06A RU2191931C2 (en) 1996-12-09 1997-12-08 Device for reduction of turbulent resistance in boundary turbulent area of flow field near surface of wall

Country Status (8)

Country Link
US (1) US5833389A (en)
EP (1) EP0850832A1 (en)
JP (1) JPH10183557A (en)
KR (1) KR19980063904A (en)
CN (1) CN1186268A (en)
CA (1) CA2224041A1 (en)
IL (1) IL122505A (en)
RU (1) RU2191931C2 (en)

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