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The loss coefficient ( K ) for a sudden contraction can be calculated using the formula:
[ K = \left(1 - \frac{A_2}{A_1}\right)^2 ]
where ( A_1 ) is the cross-sectional area of the larger duct and ( A_2 ) is the cross-sectional area of the smaller duct. This formula assumes that the flow is incompressible and that the contraction is sudden, leading to turbulence and energy loss. The resulting ( K ) value represents the energy loss due to the abrupt change in flow area.
What else can I help you with?
What is coefficient of contraction for venturimeter?
The coefficient of contraction (Cc) for a venturimeter is the ratio of the area of the throat (narrowest section) to the area of the inlet (largest section). It accounts for the loss of fluid flow due to the contraction as the fluid passes through the throat, typically ranging from 0.6 to 0.9 for most venturimeters. This coefficient is crucial for accurate flow rate calculations and reflects the efficiency of the venturimeter design in maintaining fluid velocity.
Why minor loss due to sudden contraction?
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