The invention relates to a self-suction performance prediction method in the starting process of a water-jet propeller, belongs to the technical field of ship industry and fluid machinery, and particularly belongs to the field of water-jet propulsion. The method comprises the following steps: based on a basic equation of fluid mechanics, establishing a geometric model of the water-jet propeller, establishing a corresponding flow field area, performing grid division on a water inlet runner, a nozzle and a vehicle bottom water area model of the water-jet propeller, checking grid independence, and then performing prediction parameter setting; and finally, outputting the flow field information of the water-jet propeller under different waterline heights or different starting time conditions to obtain the lowest waterline height of the normal starting of the water-jet propeller. According to the invention, the evolution rule of gas, vapor and liquid phases in the starting process of the water-jet propulsor can be disclosed, the lowest waterline height of normal starting of the water-jet propulsor can be predicted, reference is provided for starting of the water-jet propulsor, and the experiment cost and time are saved.
本发明涉及一种喷水推进器启动过程的自吸性能预测方法,属于船舶工业和流体机械技术领域,特别是属于喷水推进领域。本发明基于流体力学基本方程,通过建立喷水推进器几何模型,同时建立相应的流场区域,对喷水推进器进水流道、喷口和车底水域模型进行网格划分,并检查网格无关性,然后进行预测参数设置,最后输出不同水线高度或者不同启动时间条件下喷水推进器流场信息,能够得出喷水推进器正常启动的最低水线高度。本发明能揭示喷水推进器启动过程中气、汽和液三相的演变规律,预测喷水推进器正常启动的最低水线高度,为喷水推进器启动提供参考,节省实验的成本和时间。
Self-suction performance prediction method in starting process of water-jet propeller
一种喷水推进器启动过程的自吸性能预测方法
2021-06-04
Patent
Electronic Resource
Chinese
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |
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