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Reynolds number for a liquid of density ...

Reynolds number for a liquid of density `rho`, viscosity `eta` and flowing through a pipe of diameter D, is given by

A

`(rho vD)/(eta)`

B

`(rho eta D)/(v)`

C

`(rho v eta)/(D)`

D

`(eta v D)/(rho)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • The volume of a liquid of density rho and viscosity eta flowing in time t through a capillary tube of length l and radius R, with a pressure difference P, across its ends is proportional to :

    A
    `P^(2)R^(2)t//eta l^(2)`
    B
    `PR^(4)//eta l t`
    C
    `PR^(4)t//eta l`
    D
    `eta R^(4)//l t`

  • The Reynolds number of a flow is the ratio of

    A
    Gravity to viscous force
    B
    Gravity force to pressure force
    C
    Inertial forces to viscous force
    D
    Viscous forces to pressure forces

  • A liquid of density rho and coefficient of viscosity eta , flows with velocity upsilon through a tube of diameter D. A quantity R = (rho upsilon D)/(eta) determines whether the flow will be streamlined or turbulent. R has the dimension of

    A
    velocity
    B
    acceleration
    C
    force
    D
    none of these

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