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词汇 Rayleigh dissipation function
分类 英语词汇 英语翻译词典
释义

Rayleigh dissipation function

英语百科

Rayleigh dissipation function

In physics, the Rayleigh dissipation function, named for Lord Rayleigh, is a function used to handle the effects of velocity-proportional frictional forces in Lagrangian mechanics. It is defined for a system of N particles as

The force of friction is negative the velocity gradient of the dissipation function, \bold{F}_f = -\nabla_\bold{v} F. The function is half the rate at which energy is being dissipated by the system through friction.

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