Air moving over an automobile is accelerated to speeds higher than the travel speed, as shown in Fig. 9.25. This causes changes in interior pressure when windows are opened or closed. Use the data of Fig. 9.25 to estimate the pressure reduction when a window is opened slightly at a speed of \(100 \mathrm{~km} / \mathrm{hr}\). What is the air speed in the freestream near the window opening?

Data From Fig. 9.25

Transcribed Image Text:

Cp = P-Px