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Flow and Momentum

A hot gas stream enters a uniform diameter return bend as shown. The entrance velocity is 100 f/s, the gas density is .02lbm/cubic ft. and the mass flow rate is 1 lbm/cubic ft. The gas is cooled before exiting the bend and exits the bend at a density of .06 lbm/cubic ft. The pressures at the entrance and exit of the bend are equal and are equal to atmospheric pressure. Find the force required to hold the bend.

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My only question is are there any other forces acting on the ...

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This in-depth solution has an annotated diagram and step-by-step calculations and explanations to determine the force required to hold the bend. All workings and formulas are included.