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CE 321 Lab 1 – Fluid Statics PowerPoint PPT Presentation


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CE 321 Lab 1 – Fluid Statics. Hydrostatic Theory . Horizontal Plane . Resultant Force = . Centroid= h/2 . Vertical Plane . ……………………………... (1) (Theoretical). …………………… (2). Objectives

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CE 321 Lab 1 – Fluid Statics

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Ce 321 lab 1 fluid statics

CE 321

Lab 1 – Fluid Statics


Ce 321 lab 1 fluid statics

Hydrostatic Theory

Horizontal Plane

Resultant Force =


Ce 321 lab 1 fluid statics

Centroid= h/2

Vertical Plane

……………………………... (1) (Theoretical)

…………………… (2)


Ce 321 lab 1 fluid statics

  • 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 the equation derived from Hydrostatic

    theory for engineering use


Ce 321 lab 1 fluid statics

L1

L4

CW

Pivot

L3

L2

W

yR

l

d

FR

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)


Ce 321 lab 1 fluid statics

PPre

Pressure Prism for Partially and Fully submerged case

Partially Submerged

Fully Submerged


Post lab session analysis

Post Lab Session Analysis

  • Enter data into spreadsheet & study the plot

Theo

Uncertainty explains inaccuracy

Uncertainty does not explain inaccuracy


Ce 321 lab 1 fluid statics

  • 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


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