At a Reynolds number between 10^5 and 10^6, the drag coefficient takes a sudden dip. As velocity increases, the vortices become unstable and are … lar~.er values of Reynolds numbers . If you measure far enough up- and down-stream there will be no pressure difference at all. Actual values strongly dependent on airfoil and Reynolds number. C d. R e / 10 4. For these plots, the current value of the flow conditions is shown as a red dot on the plot. In fluid dynamics, the drag coefficient (commonly denoted as: , or ) is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water. Drag I am currently working on an assignment for university. It is used in the drag equation in which a lower drag coefficient indicates the object will have less aerodynamic or hydrodynamic drag. is the free stream speed, is the free stream density, A is the area. Drag Coefficient - The drag coefficient quantifies the drag or resistance of an object in a fluid environment. Calculates the drag coefficient using the curves fitted to the data for smooth spheres as plotted hereand for long smooth cylinders as plotted here. Measurement of the Drag Coefficient of a Cylinder MAE 171A/175A • Pressure Distribution on Cylinder • Drag from Momentum Loss Measured in Wake with laser Doppler Velocimetry - LDV Measurement Techniques • Demonstration of pressure increase with depth • Weight of the column W=mg= ρAhg • Weight is supported by the net pressure =(P-P o)A P=P o+ ρhg Review of … and height of test section, and the length … Experiment Air Flow Drag Coefficient Equations and Calculator

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