$1.$ World is making progress towards supercomputer and also there are robust simulation software are available $($openfoam$,$ startccm$+,$ ansys etc..$)$ for flow simulation. Why are we still dependent on experimental methods of flow visualization? Write one paragraph.

Simulations and supercomputers do not account for randomness and chaos, through experiment we are able to physically see errors and change, like in this flow visualization.

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$2.$ Draw Streamlines over a sphere, case#$1$ for Re $<<1$ and case#$2$: Re $>>2$x$105.$ Re: Reynolds number.

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$3.$ World is making progress towards supercomputer and also there are robust simulation software are available $($openfoam$,$ startccm$+,$ ansys etc..$)$ for flow simulation. Why we are still dependent on experimental method of flow visualization. Write one paragraph.

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$4.$ Name two additional experimental flow visualization techniques that were not used in this lab. Write one paragraph to explain each technique.

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$5.$ What is slip and no slip boundary condition in boundary layer?