Questions from Thermal Fluid Science

Q: Express Newton’s first, second, and third laws.

Express Newton’s first, second, and third laws.

Q: A 90° elbow in a horizontal pipe is used to direct

A 90° elbow in a horizontal pipe is used to direct water flow upward at a rate of 40 kg/s. The diameter of the entire elbow is 10 cm. The elbow discharges water into the atmosphere, and thu...

Q: Repeat Prob. 13–20 for the case of another (

Repeat Prob. 13–20 for the case of another (identical) elbow attached to the existing elbow so that the fluid makes a U-turn. Data from Prob. 13-20: A 90° elbow in a hori...

Q: A horizontal water jet impinges against a vertical flat plate at 30

A horizontal water jet impinges against a vertical flat plate at 30 ft/s and splashes off the sides in the vertical plane. If a horizontal force of 500 lbf is required to hold the plate against the wa...

Q: Water enters a 7-cm-diameter pipe steadily with a

Water enters a 7-cm-diameter pipe steadily with a uniform velocity of 2 m/s and exits with the turbulent flow velocity distribution given by u = umax(1 − r/R)1/7. If the pressure drop along the pipe i...

Q: A reducing elbow in a horizontal pipe is used to deflect water

A reducing elbow in a horizontal pipe is used to deflect water flow by an angle θ = 45° from the flow direction while accelerating it. The elbow discharges water into the atmos...

Q: Consider an automobile traveling at a constant speed along a road.

Consider an automobile traveling at a constant speed along a road. Determine the direction of the heat and work interactions, taking the following as the system: (a) the car radiator, (b) the car engi...

Q: Repeat Prob. 13–24 for the case of θ =

Repeat Prob. 13–24 for the case of θ = 125°. Data from Prob. 13-24: A reducing elbow in a horizontal pipe is used to deflect water flow by an angle Î&c...

Q: A 100-ft3/s water jet is moving in the

A 100-ft3/s water jet is moving in the positive x-direction at 18 ft/s. The stream hits a stationary splitter, such that half of the flow is diverted upward at 45° and the other half is dir...

Q: Reconsider Prob. 13–26E. Using appropriate software, investigate

Reconsider Prob. 13–26E. Using appropriate software, investigate the effect of the splitter angle on the force exerted on the splitter in the incoming flow direction. Let the half sp...