1) Evaluate the airflow (average) speed at sections 1 to 3 2) Derive a simple, explicit expression for the flow profile

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1 Evaluate The Airflow Average Speed At Sections 1 To 3 2 Derive A Simple Explicit Expression For The Flow Profile 1 (102.28 KiB) Viewed 16 times

1) Evaluate the airflow (average) speed at sections 1 to 3 2) Derive a simple, explicit expression for the flow profile Vz(y) at section 2, and infer the highest speed reached at this location 3) Evaluate what must be the shaft power required from the fan to sustain the flow regime throughout the vein 4) Determine the anchoring forces needed to maintain the tunnel fixed on the ground (neglect the effect of gravity) *) Bonus question (extra points) - Answer question 4) for the less trivial situation in which section 1 would exhibit pressure reduced to 95% of the atmospheric pressure (with all other parameters kept identical) Note: Neglect the effect of elevation (gravity). Ignore the unsteadiness incurred by the flow turbulence at section (3). Reminder: density and pressure of atmospheric air p = 1.225 kg/mº, Pabs = 101,325 kPa. a