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could you explain a everyday life phenomenon?

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Old   March 8, 2004, 00:37
Default could you explain a everyday life phenomenon?
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When turn on a faucet, water fall down to a flat tub. Then a flat area surrounded by a circular boundary is formed and the boundary is just like a wall that separate the water outside and the relative dry area inside. can anyone explain it to me using fluid mechancs knowledge? It may also be a type-change example,i.e. elliptic & Hyperbolic type equations apply to each zone.
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Old   March 9, 2004, 14:36
Default Re: could you explain a everyday life phenomenon?
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That circular wall of water is known as a "bore" and is described in many standard hydro texts.
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