p8.143_solution

# p8.143_solution - FLOWLAB SOLUTION 8.143 Using the same...

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FLOWLAB SOLUTION 8.143 Using the same FlowLab template as in Problem 8.142, investigate the effects of the diameter ratio on the discharge coefficient for a flat plate type orifice meter. Using a pipe with a radius of 0.1 m, conduct simulations for diameter ratios (DR) of 0.3, 0.5, and 0.7. Use the default water for the “Materials” and maintain a Reynolds number of Re D = 10,000 (based on pipe diameter). Note that the Reynolds number calculated in this template is based on the diameter of the orifice opening, or Re d . Create a “Fine” mesh for the grid and use a convergence criterion of 1x10 -4 . Record the discharge coefficient values for each diameter ratio from the “Reports” section and create a graph of discharge coefficient as a function of diameter ratio. Compare your results to data provided in this chapter in Figure 8.41 (also based on Re D ). Problem Setup The pipe radius, diameter ratio, and orifice configuration are set in the Geometry window as shown below. All cases used a pipe radius of 0.1 m, and a flat plate type orifice meter.

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p8.143_solution - FLOWLAB SOLUTION 8.143 Using the same...

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