作者: Free-Radical 時(shí)間: 2025-3-21 22:49 作者: compel 時(shí)間: 2025-3-22 03:39
Technological Innovation and Firm InertiaIn this note the following assumptions are introduced:作者: 注視 時(shí)間: 2025-3-22 07:25
https://doi.org/10.1057/9780230625419Ich m?chte über einige Betrachtungen über die Wirkungsweise der . berichten und über ., die in Zürich von meinen Mitarbeitern (vor allem H. .) ausgeführt worden sind.作者: concentrate 時(shí)間: 2025-3-22 12:41
https://doi.org/10.1007/978-3-8349-6859-3Der Umschlag laminar-turbulent einer Grenzschichtstr?mung wird in vielen F?llen durch die Instabilit?t der laminaren Grenzschicht gegen kleine St?rungen verursacht. Die mathematischen Grundlagen der Theorie sind schon lange bekannt und sind in 1940 durch die sehr bekannten Untersuchungen von . und . experimentell best?tigt [.].作者: 難管 時(shí)間: 2025-3-22 14:11
Attitudes and Emotions of EmployeesBei dreidimensionalen Hindernissen, deren Oberfl?che keine Gebiete mit zu kleinen Krümmungsradien aufweist, führt die Berechnung der laminaren Grenzschicht mit Hilfe des ?Pr?valenzprinzips“ zu zufriedenstellenden und mit den Versuchen gut übereinstimmenden Ergebnissen [.].作者: 難管 時(shí)間: 2025-3-22 17:39 作者: Hirsutism 時(shí)間: 2025-3-23 00:22 作者: 扔掉掐死你 時(shí)間: 2025-3-23 02:42
Grenzschichten in geraden und gekrümmten DiffusorenIch m?chte über einige Betrachtungen über die Wirkungsweise der . berichten und über ., die in Zürich von meinen Mitarbeitern (vor allem H. .) ausgeführt worden sind.作者: 乞丐 時(shí)間: 2025-3-23 07:24 作者: 極端的正確性 時(shí)間: 2025-3-23 16:02 作者: Spartan 時(shí)間: 2025-3-23 21:04 作者: 浪蕩子 時(shí)間: 2025-3-23 22:56
https://doi.org/10.1057/9781137026880, depends on the steadiness of the stream, roughness of the surface, or heat transfer to or from the surface. Certain investigations, conducted mostly at low speeds, attempt to probe into the mechanism of transition. A recent survey of the subject has been given by . [.].作者: 中古 時(shí)間: 2025-3-24 03:42
Allan Warmington,Tom Lupton,Cecily Gribbin to come to rest if they are illuminated by a stroboscopic light source, flashing with the right frequency. By introducing smoke into the boundary layer of a flat plate or an aerofoil and assuming that periodic motions occur, they might be studied easily with stroboscopic illumination.作者: 簡(jiǎn)潔 時(shí)間: 2025-3-24 09:30 作者: 危險(xiǎn) 時(shí)間: 2025-3-24 11:51
Mechanism of transition at subsonic speeds, depends on the steadiness of the stream, roughness of the surface, or heat transfer to or from the surface. Certain investigations, conducted mostly at low speeds, attempt to probe into the mechanism of transition. A recent survey of the subject has been given by . [.].作者: FANG 時(shí)間: 2025-3-24 16:37 作者: 一瞥 時(shí)間: 2025-3-24 22:07 作者: 轉(zhuǎn)折點(diǎn) 時(shí)間: 2025-3-25 01:59
Power and Politics in Health and Medicine,ht-hand side of (1). The term in .″ can be reduced by some integration by parts, again using (2), to one in . alone, and in this way one converts the original problem into the following integral equation (. ≥ 0)作者: reject 時(shí)間: 2025-3-25 06:09 作者: glisten 時(shí)間: 2025-3-25 08:05
On the instability of laminar flow and its transition to turbulence the mathematical theory can be developed in great detail. Even in this case, it is well-known that the theory of the instability of parallel flows has involved a great deal of controversy, largely due to the difficulty of the mathematical problems involved.作者: conspicuous 時(shí)間: 2025-3-25 13:01
Stability of the two dimensional jetht-hand side of (1). The term in .″ can be reduced by some integration by parts, again using (2), to one in . alone, and in this way one converts the original problem into the following integral equation (. ≥ 0)作者: intuition 時(shí)間: 2025-3-25 16:00 作者: Ingratiate 時(shí)間: 2025-3-25 23:28 作者: Apoptosis 時(shí)間: 2025-3-26 00:34
Theorie der sekund?ren Instabilit?t der laminaren Grenzschichtenigkeitsprofils praktisch unabh?ngiger kritischer Wert, so werden Wirbel dieser Art und geeigneter Achsenabst?nde in der Grenzschicht angefacht und k?nnen schlie?lich zum laminar-turbulenten Umschlag führen.作者: Affiliation 時(shí)間: 2025-3-26 04:22 作者: 雕鏤 時(shí)間: 2025-3-26 11:53
Axons innervating hair follicle receptors,hter und auch sehr verdünnter Luft zu untersuchen. Als erster Schritt, über den hier nur berichtet werden m?ge, wurde die Grenzschichtstr?mung in reinem Stickstoff im Falle des Dissoziationsgleichgewichtes untersucht, um diese Ergebnisse mit dem Falle des Nichtgleichgewichtes zu vergleichen. Weiterh作者: 灌輸 時(shí)間: 2025-3-26 16:37
https://doi.org/10.1007/978-3-7091-9186-6erations. . equations are also another simplified form of the Navier-Stokes equations where viscosity is completely ignored. For two-dimensional (or axisymmetrical) motion the stream function . satisfies a fourth order non-linear differential equation if the full Navier-Stokes equations are taken in作者: Bravado 時(shí)間: 2025-3-26 20:32 作者: FLAX 時(shí)間: 2025-3-26 23:27
Hilde Bortier,Lucien C. A. Vakaetoduced by allowing a free jet to impinge normally on a plane surface. A discussion of the phenomenon on the basis of boundary layer theory, for both laminar and turbulent incompressible flow, has recently been given in a paper [.] by the author (1956). For laminar flow it was shown that a similarity作者: 影響深遠(yuǎn) 時(shí)間: 2025-3-27 01:23 作者: 散布 時(shí)間: 2025-3-27 05:51 作者: Junction 時(shí)間: 2025-3-27 11:20
Nicholas R. Lengyel,Mama N. Toure Ep Camara remains not completely solved. Theoretically, the most easily tractable mechanism of transition is that following the development of the disturbances in the laminar motion caused by its inherent instability. When the disturbances are small, the equations describing the motion can be linearized, and作者: Acetabulum 時(shí)間: 2025-3-27 15:31
Power and Politics in Health and Medicine,ents at . = . ∞ give for boundary conditions.and we are interested here in . eigenfunctions . (.). By regarding the right-hand side of (1) as an inhomogeneous term, one can solve the constant-coefficients differential equation that remains, using (2), to get a representation of . in terms of the rig作者: 羊齒 時(shí)間: 2025-3-27 21:20
Allan Warmington,Tom Lupton,Cecily Gribbinused could be applied also to visualize the periodic boundary layer phenomena on steady aerofoils. The method uses the fact that periodic motions seem to come to rest if they are illuminated by a stroboscopic light source, flashing with the right frequency. By introducing smoke into the boundary lay作者: 憂傷 時(shí)間: 2025-3-27 22:11 作者: 同義聯(lián)想法 時(shí)間: 2025-3-28 05:08
Organizational Buying Processes,bh?ngig. Manchmal lassen sich für das Temperaturprofil einfache Randbedingungen an der Wand angeben: z. B. wenn hier die Temperaturen vorgegeben sind oder der W?rmeflu? verschwindet. In vielen F?llen geh?rt aber die Wand, die den einen Rand der Grenzschicht bildet, zu einem festen K?rper, dessen Tem作者: 離開真充足 時(shí)間: 2025-3-28 09:35
The Social Organisation of Work,ich arise from the lack of slipperiness of the parts of the liquid” as assumed by . in his Principia and taken over in the Navier-Stokes equations of classical hydrodynamics, but that there will be present, in general, also “cross-stresses,” i.e. normal stresses in the direction of the velocity of f作者: 設(shè)想 時(shí)間: 2025-3-28 11:09 作者: 紳士 時(shí)間: 2025-3-28 18:18 作者: Project 時(shí)間: 2025-3-28 21:27
Grenzschichtstr?mung in dissoziierendem Stickstoff bei hohen Machzahlenhter und auch sehr verdünnter Luft zu untersuchen. Als erster Schritt, über den hier nur berichtet werden m?ge, wurde die Grenzschichtstr?mung in reinem Stickstoff im Falle des Dissoziationsgleichgewichtes untersucht, um diese Ergebnisse mit dem Falle des Nichtgleichgewichtes zu vergleichen. Weiterh作者: 主動(dòng) 時(shí)間: 2025-3-29 00:09 作者: 管理員 時(shí)間: 2025-3-29 03:29
On rotating laminar boundary layerssidered by . [.]. He showed that a consistent solution can be obtained on the assumption that there are two boundary layers, originating at opposite ends of the diameter of rotation and converging towards each other at the equator. Near the poles each boundary layer is the same as that on a disc rot作者: GONG 時(shí)間: 2025-3-29 09:04
On laminar wall jetsoduced by allowing a free jet to impinge normally on a plane surface. A discussion of the phenomenon on the basis of boundary layer theory, for both laminar and turbulent incompressible flow, has recently been given in a paper [.] by the author (1956). For laminar flow it was shown that a similarity作者: NUDGE 時(shí)間: 2025-3-29 15:12 作者: 膠狀 時(shí)間: 2025-3-29 16:46
Theorie der sekund?ren Instabilit?t der laminaren Grenzschichten dann experimentell best?tigte [., ., .] Instabilit?t der ebenen laminaren Grenzschichtstr?mungen an konkaven W?nden gegenüber St?rungen in Gestalt von Wirbeln, deren L?ngsachsen parallel zur Hauptstr?mungsrichtung verlaufen. Ist der Parameter ..√./. (.. die mit der Impulsverlustdicke . gebildete Re作者: 驕傲 時(shí)間: 2025-3-29 22:46 作者: medieval 時(shí)間: 2025-3-30 00:51
Stability of the two dimensional jetents at . = . ∞ give for boundary conditions.and we are interested here in . eigenfunctions . (.). By regarding the right-hand side of (1) as an inhomogeneous term, one can solve the constant-coefficients differential equation that remains, using (2), to get a representation of . in terms of the rig作者: 苦惱 時(shí)間: 2025-3-30 04:36 作者: Diuretic 時(shí)間: 2025-3-30 12:12 作者: Antimicrobial 時(shí)間: 2025-3-30 13:12 作者: overreach 時(shí)間: 2025-3-30 16:35
Cross-stresses in air, demonstrated by means of a centripetal vacuum pumpich arise from the lack of slipperiness of the parts of the liquid” as assumed by . in his Principia and taken over in the Navier-Stokes equations of classical hydrodynamics, but that there will be present, in general, also “cross-stresses,” i.e. normal stresses in the direction of the velocity of f作者: 殖民地 時(shí)間: 2025-3-31 00:06
Analyse théorique du champ aérodynamique dans le voisinage immédiat d’un plan illimité, basée sur lanction est la solution de l’équation intégro-différentielle aux différences de L. ., restée insoluble jusqu’à présent. Nous allons montrer comment peut-on trouver la valeur approchée de la fonction de distribution, sans avoir à résoudre formellement l’équation de ., dans le cas du mouvement stationn作者: 作嘔 時(shí)間: 2025-3-31 04:09
The turbulent boundary layer the layer the dominant large-scale motion appears to be jets of turbulent fluid which may arise from the release of the anisotropie Reynolds stresses set up by the shearing motion at the free boundary. The connection between these results and the hypothesis of wall similarity (“l(fā)aw of the wall”) is作者: Focus-Words 時(shí)間: 2025-3-31 06:53
Synthetic method for boundary layer thicknessin viscous flow both tangential and normal velocities must be zero. Linearization of the Navier-Stokes equations, either by regarding the fluid non-viscous or the motion to be so slow that the inertia terms can be completely or partially ignored, has resulted in only limited applications of the theo作者: Pcos971 時(shí)間: 2025-3-31 10:52
On rotating laminar boundary layersayers at the equator were infinitely thick with zero longitudinal components of velocity but his view was that this would be unlikely in the exact solution. In any case the boundary layers from the two poles must meet at the equator and the parabolic nature of their governing equations made them ina作者: Rct393 時(shí)間: 2025-3-31 14:12
On laminar wall jetsr heated, if it is assumed that the coefficient of viscosity is proportional to the temperature, and his results are briefly discussed, with his permission. Finally, consideration is given to perturbations of the basic similarity solution due to a small external flow, as might arise as a consequence作者: incarcerate 時(shí)間: 2025-3-31 20:04
Zur Bestimmung der Temperaturverteilung in dünnen Platten mit anliegender überschallgrenzschichtrmeübergang) nur sehr wenig von dem Druckfall l?ngs des K?rpers ab, aber auch nur wenig von der Str?mungsform: laminar oder turbulent. Deshalb treten im station?ren Zustand nur dann gr??ere Unterschiede in der Wandtemperatur auf, wenn die W?rmestrahlung bedeutend wird. Anders bei instation?ren Zust?作者: 兩種語言 時(shí)間: 2025-3-31 23:48
Cross-stresses in air, demonstrated by means of a centripetal vacuum pumptico-viscous cross-stresses. . and . (1956, 1957) have used this phenomenon for the design of a centripetal air pressure pump, but . (1957) has shown that such cross-forces can result from (A) a slight error in the perpendicularity of the plane of either the stator or the rotor to the axis of rotati作者: Infantry 時(shí)間: 2025-4-1 03:20 作者: degradation 時(shí)間: 2025-4-1 09:24 作者: 有惡意 時(shí)間: 2025-4-1 12:48
RTO Practices for Effectiveness,ayers at the equator were infinitely thick with zero longitudinal components of velocity but his view was that this would be unlikely in the exact solution. In any case the boundary layers from the two poles must meet at the equator and the parabolic nature of their governing equations made them ina作者: gruelling 時(shí)間: 2025-4-1 15:52 作者: 宴會(huì) 時(shí)間: 2025-4-1 18:32 作者: Dislocation 時(shí)間: 2025-4-2 01:12
The Social Organisation of Work,tico-viscous cross-stresses. . and . (1956, 1957) have used this phenomenon for the design of a centripetal air pressure pump, but . (1957) has shown that such cross-forces can result from (A) a slight error in the perpendicularity of the plane of either the stator or the rotor to the axis of rotati作者: ANA 時(shí)間: 2025-4-2 03:25
,Anla?, Hintergründe und Ziele der Studien,es, to name but a few. This chapter explores the sources and types of these threats, the hacker community groups, the different and changing threat motives, and the management of these threats. Threat awareness is also discussed.
