The coefficient of s then immediately indicates the speed of decay, and it takes 4T seconds for the transient to decay to 1.8% of its initial value.
的系数立即给出了衰减的速度。而且，当时间为4T时， 瞬态解衰减至初始值的1.8%。
2
The non-dimensional pump head coefficient tends to become larger than the quasi-steady value at the very beginning of the start, which indicates obvious transient effect.