本文关于流体动力学原理在密封诸如机器部件内流体方面的应用.其中大量材料涉及到汽车方面的应用.有三种基本的流体动力密封设计(图1).螺纹轴型(左边)最近已经讨论过.刻痕密封的密封特性与螺旋密封相同.如同它的对应物一样,只限于用在单向密封的场合下.刻痕密封更大的局限性在于它只能用在密封压力很小的或无压力的场合下.把径向密封只是一个装设于离开其安装壳体千分之几时处的一个盘形件.旋转和静止的 This article is concerned with the principles of fluid dynamics in the sealing of fluids such as machine parts. Many of these materials are involved in automotive applications. There are three basic designs of hydrodynamic seals (Figure 1). The threaded shaft type (left) has been discussed recently The scotch seal has the same sealing characteristics as the screw seal, as its counterpart is for single direction seals only, but the greater limitation of scotch seals is that they can only be used when the sealing pressure is small or Under no pressure conditions, the radial seal is simply a disk mounted at a few thousandths of an inch away from its mounting housing. Rotating and stationary