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Exercises

These additional exercises build on the data from the Laminar and Turbulent Results page. The Matlab Read ASCII script available on the Laminar Results page will be useful in completing them.

Laminar Jet

1. Evaluate and plot the spreading rate of the jet, S = dR(x)(1/2)/dx where R(x)(1/2) is the half width of the laminar jet, computed in the Laminar Jet - Results section. For a jet that spreads linearly, the spreading rate will be constant, although there will be a steep differential and non constant spreading as the jet is initially exposed to the environment.
2. Evaluate and plot the local Reynolds number of the flow, given by R = (U_center)*R(x)(1/2)/ν. The average local Reynolds number should be independent of x and be approximately 40.

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