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2Â¥2012-07-30 15:19:43
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xiegangmai: ½ð±Ò+1, лл²ÎÓ룡 2012-08-02 22:44:05
plago: ½ð±Ò+5 2012-08-23 08:40:32
xiegangmai: ½ð±Ò+1, лл²ÎÓ룡 2012-08-02 22:44:05
plago: ½ð±Ò+5 2012-08-23 08:40:32
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The Coandă effect is a result of entrainment of ambient fluid around the fluid jet. When a nearby wall does not allow the surrounding fluid to be pulled inwards towards the jet (i.e. to be entrained), the jet moves towards the wall instead. The fluid of the jet and the surrounding fluid should be essentially the same substance (a gas jet into a body of gas or a liquid jet into a body of liquid). In one application, a jet of air is blown over the upper surface of an airfoil, which can have a strong influence on the overall lift, especially at high angles of attack when the flow would otherwise separate (stall). See Blown flap. http://en.wikipedia.org/wiki/Coand%C4%83_effect |
3Â¥2012-07-31 12:44:53














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