深水自激吸气式脉冲射流装置冲击特性的试验研究
发布时间:2019-04-26 20:30
【摘要】:运用自行研制的水下射流试验系统对自激吸气式脉冲射流装置在不同围压和靶距下的冲击特性进行了试验研究,获取了装置吸气量以及靶盘上冲击力,分析了装置射流冲击力随围压和靶距的变化规律。研究表明:下喷嘴直径对吸气量影响较大,存在一个最佳范围;随着围压的增加,同一靶距下靶盘上各圈射流冲击力均减小,不同围压下靶盘靶心和不同圈之间冲击力变化规律是不同的;对于不同的下喷嘴直径,围压越高和靶距越大,冲击力分布曲线越平缓。
[Abstract]:The self-developed underwater jet test system is used to study the impact characteristics of the self-excited suction pulse jet device under different confining pressures and target distances, and the gas absorption and impact force on the target disk are obtained. The variation of jet impingement force with confining pressure and target distance is analyzed. The results show that the diameter of the lower nozzle has a great influence on the air absorption, and there is an optimal range. With the increase of confining pressure, the impingement force of each circle on the target plate decreases under the same target distance, and the variation law of the impact force between the target center and the different circle under different confining pressure is different. For different lower nozzle diameters, the higher the confining pressure and the larger the target distance, the more smooth the distribution curve of impact force.
【作者单位】: 华北水利水电大学;
【基金】:国家自然科学基金(51309099) 水利部公益性行业科研专项经费项目(201201085) 华北水利水电大学2014年大学生创新计划(HSCX2014115)
【分类号】:O358
本文编号:2466364
[Abstract]:The self-developed underwater jet test system is used to study the impact characteristics of the self-excited suction pulse jet device under different confining pressures and target distances, and the gas absorption and impact force on the target disk are obtained. The variation of jet impingement force with confining pressure and target distance is analyzed. The results show that the diameter of the lower nozzle has a great influence on the air absorption, and there is an optimal range. With the increase of confining pressure, the impingement force of each circle on the target plate decreases under the same target distance, and the variation law of the impact force between the target center and the different circle under different confining pressure is different. For different lower nozzle diameters, the higher the confining pressure and the larger the target distance, the more smooth the distribution curve of impact force.
【作者单位】: 华北水利水电大学;
【基金】:国家自然科学基金(51309099) 水利部公益性行业科研专项经费项目(201201085) 华北水利水电大学2014年大学生创新计划(HSCX2014115)
【分类号】:O358
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