Stream function find radial tangential velocity components

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SUMMARY

The discussion focuses on calculating the radial and tangential velocity components from the given stream function ψ = C(sin(θ)/r). The relevant formulas derived from the stream function are v_r = (1/r)(∂ψ/∂θ) and v_θ = -∂ψ/∂r. Participants express confusion regarding the initial steps to take in solving for these components, indicating a need for clarity on the application of the stream function in fluid dynamics.

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xzi86
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Homework Statement



Given the following stream function:

ψ=C(sin(theta)/r)

Find the radial and tangential velocity components.

Homework Equations


? Don't know any


The Attempt at a Solution


Absolutely no idea how to even begin. Do I take the integral or something? Any help appreciated
 
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xzi86 said:
Find the radial and tangential velocity components.

Homework Equations


? Don't know any

From wikipedia page on http://en.wikipedia.org/wiki/Stream_function" , the two relevant formulas would be


v_r = \frac{1}{r}\frac{\partial \psi}{\partial \theta}

v_{\theta} = - \frac{\partial \psi}{\partial r}
 
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