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Why Re is different for external and internal flow |
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June 12, 2007, 23:46
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Why Re is different for external and internal flow
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#1 |
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Guest
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We know that Reynold's no is different for internal flow and external flow? I wonder why does it happen? Is it the charecteristic length, which is different in both and so Re is different in both?
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June 13, 2007, 06:36
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Re: Why Re is different for external and internal
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#2 |
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Guest
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Reynolds number depends on velocity magnitude and viscosity. If the length is different with the same flow rate (and same fluid) the Reynolds is different.
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June 13, 2007, 12:10
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Re: Why Re is different for external and internal
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#3 |
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I am not sure what you are asking. The Re is defined the same for every flow. I think what you are asking is why the Re for transition is different for external versus internal flow?
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June 14, 2007, 04:53
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Re: Why Re is different for external and internal
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#4 |
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Me too... What do you mean exactly by internal and external flow ?
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