Cnoidal Waves from Korteweg-de Vries Equation

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

A cnoidal wave is an exact periodic traveling-wave solution of the Korteweg–de Vries (KdV) equation, first derived by them in 1895. Such a wave describes surface waves whose wavelength is large compared to the water depth.

Contributed by: Enrique Zeleny (May 2013)
Open content licensed under CC BY-NC-SA


Snapshots


Details

The surface elevation of a cnoidal wave takes the form

,

where is the elevation, is the wave height, is the phase velocity (the rate at which the phase of the wave propagates), is the wavelength, and is the Jacobi elliptic function (hence the name cnoidal). is the complete elliptic integral of the first kind, with being the elliptic parameter that for large values produces smoother troughs and more pronounced crests than in the case of a sine wave.

Reference

[1] Wikipedia. "Cnoidal Wave." (May 16, 2013) en.wikipedia.org/wiki/Cnoidal_wave.



Feedback (field required)
Email (field required) Name
Occupation Organization
Note: Your message & contact information may be shared with the author of any specific Demonstration for which you give feedback.
Send