What is the impact of having a pipe made of rough material on the flow?

KremellaKremella Admin Posts: 2,326
in Fluid Mechanics

Hello Experts,

What is the impact of having a pipe made of rough material on the flow?

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  • prajputprajput Admin Posts: 304

    Hello @Kremella ,

    The flow over a rough wall generally leads to higher levels of friction pressure losses.

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  • KremellaKremella Admin Posts: 2,326
    Thanks for your response @prajput , Is there a way to calculate the friction losses?

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  • prajputprajput Admin Posts: 304

    Yes, you can calculate the friction losses using the Darcy-Weisbach equation. The pressure losses are proportional to the length of the pipe and the Darcy-Weisbach friction factor:

    delta_P / L = f_D * (rho / 2) * (V_avg^2 / D )

    where,

    delta_P - pressure drop

    L - pipe length

    f_D - friction factor

    rho - fluid density

    mu - fluid dynamic viscosity

    V_avg - average fluid velocity

    D - pipe diameter


    This equation is valid for incompressible flows.

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