深水自激吸氣式脈沖射流裝置沖擊特性的試驗研究
發(fā)布時間:2019-04-26 20:30
【摘要】:運用自行研制的水下射流試驗系統(tǒng)對自激吸氣式脈沖射流裝置在不同圍壓和靶距下的沖擊特性進行了試驗研究,獲取了裝置吸氣量以及靶盤上沖擊力,分析了裝置射流沖擊力隨圍壓和靶距的變化規(guī)律。研究表明:下噴嘴直徑對吸氣量影響較大,存在一個最佳范圍;隨著圍壓的增加,同一靶距下靶盤上各圈射流沖擊力均減小,不同圍壓下靶盤靶心和不同圈之間沖擊力變化規(guī)律是不同的;對于不同的下噴嘴直徑,圍壓越高和靶距越大,沖擊力分布曲線越平緩。
[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.
【作者單位】: 華北水利水電大學;
【基金】:國家自然科學基金(51309099) 水利部公益性行業(yè)科研專項經費項目(201201085) 華北水利水電大學2014年大學生創(chuàng)新計劃(HSCX2014115)
【分類號】:O358
本文編號: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.
【作者單位】: 華北水利水電大學;
【基金】:國家自然科學基金(51309099) 水利部公益性行業(yè)科研專項經費項目(201201085) 華北水利水電大學2014年大學生創(chuàng)新計劃(HSCX2014115)
【分類號】:O358
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