計(jì)及船體姿態(tài)變化的水池阻塞效應(yīng)數(shù)值研究
發(fā)布時(shí)間：2018-09-06 14:34
【摘要】：在水池進(jìn)行船模試驗(yàn),特別在水池尺度較小、船模尺度相對(duì)較大時(shí),必然遇到阻塞效應(yīng)問題,必須予以修正。本文以KCS船為對(duì)象,計(jì)及自由度,計(jì)算無限域及1.5%、1.8%、2.2%、3.0%阻塞比的船模阻力以及船體的升沉和縱搖,另外計(jì)算了船寬、池寬比為0.16、0.18、0.21的船模阻力,分析了船寬池寬比對(duì)阻塞效應(yīng)的影響。隨阻塞比的增大,船�？傋枇ψ兓用黠@;通過不同公式的修正結(jié)果對(duì)比,建議在阻塞比小于1.5%的拖曳水池進(jìn)行阻力試驗(yàn),且當(dāng)船阻塞比小于1.8%時(shí),推薦斯科特公式和基于平均橫剖面積的平均流修正公式作為主要的修正手段,船寬、池寬的比值也是阻塞效應(yīng)修正不可忽略的因素。
[Abstract]:When the ship model test is carried out in the pool, especially when the scale of the tank is small and the ship model scale is relatively large, the blocking effect is inevitable and must be corrected. In this paper, taking the KCS ship as an object, taking into account the degree of freedom, the ship model resistance and the heave and pitching of the ship with an infinite domain and 1.8g / 1.5 ratio of 3.0% blocking ratio are calculated, and the ship model resistance of the ship with the width of the ship and the ratio of the width of the ship to the pool of 0.180.21 is calculated, and the influence of the ratio of the width to the width of the ship on the blocking effect is analyzed. With the increase of the blocking ratio, the change of the total resistance of the ship model is more obvious. By comparing the revised results of different formulas, it is suggested that the drag test should be carried out in a towing tank with a blocking ratio of less than 1.5%, and when the blocking ratio is less than 1.8, The Scott formula and the average flow correction formula based on the average cross-section product are recommended as the main means of correction. The ratio of ship width and pool width is also a factor which can not be ignored in the correction of blocking effect.
【作者單位】： 哈爾濱工程大學(xué)船舶工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41176074;51209048,51379043,51409063) 工信部高技術(shù)船舶科研項(xiàng)目(G014613002) 哈爾濱工程大學(xué)青年骨干教師支持計(jì)劃(HEUCFQ1408)
【分類號(hào)】：U661.71
本文編號(hào)：2226655
[Abstract]:When the ship model test is carried out in the pool, especially when the scale of the tank is small and the ship model scale is relatively large, the blocking effect is inevitable and must be corrected. In this paper, taking the KCS ship as an object, taking into account the degree of freedom, the ship model resistance and the heave and pitching of the ship with an infinite domain and 1.8g / 1.5 ratio of 3.0% blocking ratio are calculated, and the ship model resistance of the ship with the width of the ship and the ratio of the width of the ship to the pool of 0.180.21 is calculated, and the influence of the ratio of the width to the width of the ship on the blocking effect is analyzed. With the increase of the blocking ratio, the change of the total resistance of the ship model is more obvious. By comparing the revised results of different formulas, it is suggested that the drag test should be carried out in a towing tank with a blocking ratio of less than 1.5%, and when the blocking ratio is less than 1.8, The Scott formula and the average flow correction formula based on the average cross-section product are recommended as the main means of correction. The ratio of ship width and pool width is also a factor which can not be ignored in the correction of blocking effect.
【作者單位】： 哈爾濱工程大學(xué)船舶工程學(xué)院;
【基金】：國家自然科學(xué)基金項(xiàng)目(41176074;51209048,51379043,51409063) 工信部高技術(shù)船舶科研項(xiàng)目(G014613002) 哈爾濱工程大學(xué)青年骨干教師支持計(jì)劃(HEUCFQ1408)
【分類號(hào)】：U661.71
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，本文編號(hào)：2226655
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