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Discussion :: Heat and Mass Transfer

  1. Reynolds number (RN) is given by (where h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity)

  2. A.

     RN = hl/k

    B.

     RN = μ cp/k

    C.

     RN = ρ V l /μ

    D.

     RN = V²/t.cp

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    Answer : Option C

    Explanation :

    Reynolds number (RN) is given by
    RN = ρ V l /μ
    where
    h = Film coefficient, l = Linear dimension, V = Velocity of fluid, k = Thermal conductivity, t = Temperature, ρ = Density of fluid, cp = Specific heat at constant pressure, and μ = Coefficient of absolute viscosity


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