Some animals have learned to take advantage of the Bernoulli effect without having read a fluid mechanics book. For example, a typical prairie dog burrow contains two entrances-a flat front door and a mounded back door as shown in Fig. P3.21. When the wind blows with velocity \(V_{0}\) across the front door, the average velocity across the back door is greater than \(V_{0}\) because of the mound. Assume the air velocity across the back door is \(1.07 V_{0}\). For a wind velocity of \(6 \mathrm{~m} / \mathrm{s}\), what pressure differences, \(p_{1}-p_{2}\), are generated to provide a fresh airflow within the burrow?

Figure P3.21

Transcribed Image Text:

(1) (2) 1.07 Vo