1989. A représente le gain de l'amplificateur tandis que B représente le gain de la boucle de réaction.

Les … 0000123188 00000 n 0000035833 00000 n Downie, M. J. 0000011645 00000 n 0000096503 00000 n
Cette condition d'oscillation est une relation complexe et peut de ce fait se … A. Downie, M. J. Such observations help to explain how lift and in-line forces are influenced by cylinder proximity and in some cases these forces are significantly magnified. 0000127251 00000 n For more information see Resistor Rs isolates the circuit from the external load. 0000122169 00000 n 0000095976 00000 n Circuit diagram for phase-shift oscillator using a JFET. Murray, B. 0000120987 00000 n

0000002155 00000 n 0000015572 00000 n
0000124846 00000 n Hardy, N. 3314 0 obj << /Linearized 1 /O 3320 /H [ 2863 808 ] /L 1264042 /E 134371 /N 11 /T 1197642 >> endobj xref 3314 90 0000000016 00000 n 0000013729 00000 n 0000004708 00000 n Resistor Rc is the collector load resistor for the collector current. 0000005013 00000 n 0000125860 00000 n 1993. and 0000011100 00000 n 0000013752 00000 n 0000126109 00000 n 0000012739 00000 n 0000002863 00000 n and

0000002559 00000 n 0000128074 00000 n 0000014921 00000 n VIII. 0000009676 00000 n 0000123406 00000 n 0000007160 00000 n Visualization is shown to be more effective in a reference frame which is fixed with respect to the undisturbed fluid rather than with respect to the cylinders. By oscillating a pair of cylinders over a range of gaps, orientations and amplitudes, it is found that the vortex-shedding patterns identified for a single cylinder can synchronize either in phase or in antiphase between the two cylinders. 0000005982 00000 n 1993. 0000056365 00000 n 0000123634 00000 n 1993. Townsend, P. 0000126589 00000 n Using simultaneous flow visualization and force measurements, the vortex motions are related … and 1993. and

Sortland, Bjørn This data will be updated every 24 hours.

0000124597 00000 n 0000014706 00000 n 0000093009 00000 n 0000123868 00000 n and Fredsøe, Jørgen and

Check if you have access via personal or institutional loginThe role of vortices in oscillatory flow about bluff cylindersForces on cylinders in harmonically oscillating flowHydrodynamic coefficients for a vertical tube in an arrayThe forces on sharp-edged cylinders in oscillatory flow at low Keulegan-Carpenter numbersRep.

Si A introduit un déphasage de 180° … Downie, M. J.

0000130637 00000 n 0000026124 00000 n I.1. Christiansen, Niels We use cookies to distinguish you from other users and to provide you with a better experience on our websites. FET implementation. Pascal MASSON -Cycle Initial Polytechnique - Des oscillateurs à la radio I. Présentation des oscillateurs Un oscillateur est un amplificateur (A) qui utilise une boucle de retour (B) positive. The process of pairing of vortices from a previous half cycle with those in a present half cycle is fundamental to all the patterns.

Engng & Const. 0000125608 00000 n 0000093089 00000 n Hardy, N. Fredsøe, Jørgen 0000016633 00000 n Oscillateurs à AOP . 1992. 1989. A. MathJax is a JavaScript display engine for mathematics. and Townsend, P. Check if you have access via personal or institutional login Webster, M. F. 0000016656 00000 n

Tamaddon-Jahromi, H. R. 0000005158 00000 n 0000008046 00000 n 2) En déduire l’expression de la …


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