Calculate boundary layer thickness at a position
Helium at atmospheric pressure and 30 °C flows across a square plate at a free stream velocity of 15 m/s. Calculate the boundary layer thickness at a position where Re = 250,000.
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The air is now compressed to 0.1 m3in such a way that the temperature inside the cylinder remains constant. Determine the work done during this process.
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Air at 1 atm and 30 °C flows over a 15 cm square plate at a velocity of 10 m/s. Calculate the maximum boundary layer thickness.
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The plate is heated over its total length to a temperature of 55 °C. The fluid velocity is measured 30 cm from the edge of the plate and found to be 22.5 m/s. Is the flow laminar or turbulent? Justify your answer.
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