词汇 | impeller |
释义 | BETA Examples of impellerimpeller isn’t in the Cambridge Dictionary yet. You can help! We find that increasing the impeller angle at a fixed rotational speed increases the size of the chaotic region. Increasing the rotational speed for a fixed impeller angle also increases chaos in the system. The impeller is lowered into the tank and fastened to the mount platform. The impeller assembly is supported on a raised platform that is parallel to the top surface of the tank. This sets it apart from tank flows with bladed impellers while still highlighting essential mixing mechanisms. The impeller is centred horizontally and vertically by using an alignment grid positioned on the external chamber. This is repeated for a wide range of impeller rotation rates. The grid is biased with 78% of the nodes below the impeller to facilitate particle tracking. Once the angle and impeller length have been set, the alignment plate is clamped to the support platform. To achieve chaotic behaviour, the impeller angle is adjustable. The impeller is driven by an axis which is in turn driven by the engine via the pulley. Taken together with some data about the engine, the impeller data facilitates parametrizing the axis and specifying the axis bearing in the bearing function block. A further simplification was the elimination of the impeller shaft from the simulation. The most noticeable difference is the widespread chaos in the system at even at low impeller angles and transport to the region above the impeller. Viewing down from the top of the tank allows designation of the impeller and tank rotations. Increasing the impeller angle to = 10 (figure 15c) has the effect of significantly distorting the tori into asymmetric shapes. A period-5 island chain is clearly visible at this impeller angle in addition to the period-4 island chain. The impeller (and tank wall, when used) is set to the proper rotational rate. This was needed due to the large variations in in-plane velocities present, for example near the impeller tip and near the tank bottom. Two items of importance are the rotatable mount sleeve for the tank and the impeller mount platform. |
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