Conservation of mass, second Newton's law, and momentumlaw are introduced into traffic flow to set up traffic continuity equation, Euler's equation, and momentum integral equation.
In accordance with flow characteristics of the catch-water channel, linear increment flow differential equation has been obtained by momentumlaw, and a numerical method has been made.
本文针对输水廊道的水流特点，应用动量定理建立起输水廊道沿程增量流微分方程，并给出一种数值解法。
3
For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.