Flow through the pipe coupling (union) in Fig. 8–11 is to be studied using a scale model. The actual pipe is 100 mm in diameter, and the model will use a pipe that is 20 mm in diameter. The model will...

Flow through the pipe coupling (union) in Fig. 8–11 is to be studied using a scale model. The actual pipe is 100 mm in diameter, and the model will use a pipe that is 20 mm in diameter. The model will be made of the same material and transport the same fluid as the prototype. If the velocity of flow through the prototype is estimated to be 1.5 m/s, determine the required velocity through the model.