CE 321 Lab 1 Fluid Statics Hydrostatic Theory

CE 321 Lab 1 – Fluid Statics

Hydrostatic Theory Horizontal Plane Resultant Force =

Vertical Plane /2 =h d i o ntr Ce ………………. . . (1) (Theoretical) ………… (2)

Objectives • Experimentally verify the accuracy of the equation derived from Hydrostatic theory to predict the location of center of pressure • Determine if uncertainty in measurements appear to explain the inaccuracy in predicting the location of center of pressure using the equation derived from Hydrostatic theory • Comment on the suitability of theory for engineering use the equation derived from Hydrostatic

L 1 L 4 CW Pivot L 2 L 3 W y. R FR l d w Where, = force produced by the mass placed on the tray, = resultant force = length of the arm where resultant force acts = length of the arm where W acts = location on the submerged plane where resultant force is acting (Experimental)

PPre Pressure Prism for Partially and Fully submerged case Partially Submerged Fully Submerged

Post Lab Session Analysis • Enter data into spreadsheet & study the plot Theo Uncertainty explains inaccuracy Uncertainty does not explain inaccuracy

In order to answer each objective NOTE: Consider the two cases (partially and fully submerged) separately for each objective Objective 1 • Consider the inaccuracy in both the 2 cases separately Look at Error ( Relative error) Objective 2 • Look at the plot and comment • Compare Error and Propagated uncertainty. Does uncertainty account for inaccuracy? Objective 3 • Comment on suitability of Eq. 1. for engineering use • Consider inaccuracy, uncertainty and state the logic behind your conclusion