Find the streamlines of the velocity field

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SUMMARY

The discussion focuses on finding the streamlines of two specific velocity fields: 1) u=x(1+2t), v=y and 2) u=xy, v=0. The first streamline is derived correctly using the relationship \(\frac{dx}{u}=\frac{dy}{v}\), leading to the equation \(y=Cx^{\frac{1}{1+2t}}\). However, the second velocity field presents a challenge as it leads to an undefined condition due to division by zero in \(\frac{dy}{0}\). Further clarification on the second case is needed to continue the analysis.

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mathmari
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Hello!

I have to find the streamlines of the following velocity fields:

1. u=x(1+2t), v=y
2. u=xy, v=0

I have done the following:

1. ##\frac{dx}{u}=\frac{dy}{v} \Rightarrow \frac{dx}{x(1+2t)}=\frac{dy}{y} \Rightarrow \frac{\ln x}{1+2t}=\ln y+c \Rightarrow y=Ce^{\frac{\ln x}{1+2t}} \Rightarrow y=Cx^{\frac{1}{1+2t}}##

Is this correct??

2. ##\frac{dx}{u}=\frac{dy}{v} \Rightarrow \frac{dx}{xy}=\frac{dy}{0}##

How could we continue??
 
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