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Question: problems 1 an air stream enters a variable area channel...

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PROBLEMS 1. An air stream enters a variable area channel at a velocity of 30 m/s with a pressure of 120 kPa and a temperature of 10°C. At a certain point in the channel, the veloc ity is found to be 2 m/s. Using Bernoulli s equation (Le, p + ρw: constant. which assumes incompressible flow, find the pressure at this point. In this calcu lation, use the density evaluated at the inlet conditions. If the temperature of the air is assumed to remain constant, evaluate the air density at the point in the flow where the velocity is 350 m/s. Compare this density with the density at the inlet to the channel. Based on this comparison, do you think that the use of Bernoullis equation is justified?

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