@Poynt99 Lewin's setup and results are what they are, but they are being misinterpreted in more ways than one. I would agree, maybe a simple analogy is in order. In the picture posted there are two pumps, one a point source in which the pump and the restrictions determine the flow and pressure measured at any given point in the system. We should understand that in pump 1 any measure is solely dependant on the pressure and flow through pump 1 itself. Next we have pump 2, now we can imagine that if we rapidly rotate the whole of the ring filled with water CCW then every single drop of the water in the closed pipe will experience an equal force which will produce a pressure differential across any restriction. If we could imagine that each restriction dissipates energy in proportion to the flow through it not unlike a resistance then some things should become apparent. First there is no point source and that every single drop of water in the pipe is in itself a source. That R1 is the greatest resistance and due to it's resistance will become a partial source in and of itself by restricting flow which will act on the rest of the system. This is not a normal series loop like pump 1 because the resistance of R1 will create a pressure gradient, a gradient of force, acting in both directions towards R2 thus the standard series calculations have no application. In pump 2, R1 high acts towards R2 low and R1 low acts towards R2 high. The primary focus of pressure is at R1 acting outwards and the primary focus of flow at R2 acting inwards. It is obvious the two systems are not the same and do not act the same because in pump 2 we have "relative motion" to consider which tends to lead to all kinds of confusion. The concepts are easy however one must have a firm grasp on the mechanics of dynamic systems with relative properties. Regards AC
« Last Edit: 2012-02-26, 15:39:54 by allcanadian »
---------------------------
Comprehend and Copy Nature... Viktor Schauberger
“The first principle is that you must not fool yourself and you are the easiest person to fool.”― Richard P. Feynman
|