Hello, I want to make waves using niagara, as in this video a man showed a simulation of a Niagara tube wave, but I did not understand how to make it, please

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Hello, I want to make waves using niagara, as in this video a man showed a simulation of a Niagara tube wave, but I did not understand how to make it, please tell me here is the link https://www.youtube.com/watch?v=yM0udEc0qjo