AAE 333LLab 4:Wakes and Drag MeasurementBackground1.Objectives:In this experiment you will:1.Learn about the structure of a wake.1.Learn to calculate the drag on a body using the velocity profile of the wake.2.Compare the wake structure and drag of a smooth cylinder, rough cylinder, and airfoil.1.Obtain experience in using a hot-film anemometer.
streamlines. In the mixing process, slow-moving fluid is invigorated and speeded up bynearby fast-moving fluid, while the latter, in turn, is slowed down.Turbulent flows are far more common than laminar flows, both in nature and inengineering devices. For example, the flow of water in rivers, the wakes extending fromobjects flying through the air and from ships on the sea, and the motion of the air in theatmosphere are practically always turbulent.