How to Sketch and Interpret Streamlines in a Streamfunction?

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SUMMARY

The discussion focuses on the streamfunction \(\psi(r,\,\theta) = U\left(r-\frac{a^2}{r}\right)\sin{\theta}\) and the process of sketching its streamlines. Participants recommend using the streamplot feature in Mathematica to visualize the streamlines effectively. Additionally, the interpretation of the two terms in the streamfunction reveals that one represents a dipole, providing insight into the flow characteristics described by the function.

PREREQUISITES
  • Understanding of streamfunctions in fluid dynamics
  • Familiarity with polar coordinates and their conversion to Cartesian coordinates
  • Basic knowledge of Mathematica and its streamplot functionality
  • Concept of dipoles in fluid flow
NEXT STEPS
  • Learn how to convert polar coordinates to Cartesian coordinates for better visualization
  • Explore the Mathematica streamplot documentation for advanced plotting techniques
  • Study the physical interpretation of dipoles in fluid dynamics
  • Review Engineering Analysis notes for additional context on streamfunctions
USEFUL FOR

Students and professionals in fluid dynamics, engineers working with flow visualization, and anyone interested in the mathematical interpretation of streamfunctions.

Tranquillity
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Hello guys!

I have the streamfunction \(\psi(r,\,\theta) = U\left(r-\frac{a^2}{r}\right)\sin{\theta}\), \(a\) is a positive constant and I have to sketch the streamlines and also interpret the two terms in the streamfunction!

Any clue on how to do that?

Thank you very much

Kindest regards
 
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Tranquillity said:
Hello guys!

I have the streamfunction \(\psi(r,\,\theta) = U\left(r-\frac{a^2}{r}\right)\sin{\theta}\), \(a\) is a positive constant and I have to sketch the streamlines and also interpret the two terms in the streamfunction!

Any clue on how to do that?

Thank you very much

Kindest regards

Re-write in terms on x and y and use the streamplot feature in Mathematica. Refer to the math notes section Engineering Analysis notes for downloadable Mathematica notebooks that make these plots.
 
Thank you!
 
I have managed to plot the streamlines, any clue on the physical interpretation of the two terms?
 
Tranquillity said:
I have managed to plot the streamlines, any clue on the physical interpretation of the two terms?

Did you read the notes on those sections? One is a dipole
 

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