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          華中科技大學學報(自然科學版) 2020, Vol. 48 Issue (9): 100-106 DOI10.13245/j.hust.200917

          欄目:船舶工程
          標準船模拖曳水池自航試驗不確定度分析
          張 立 a , b , 陳建挺 a , 陳偉民 a , b
          a. 上海船舶運輸科學研究所航運技術與安全國家重點實驗室,上海 200135
          b. 哈爾濱工程大學船舶工程學院,黑龍江 哈爾濱 150001
          摘要 參考國際船模拖曳水池會議(ITTC,2017)推薦規程以及國家相關標準,對船模拖曳水池的自航試驗進行不確定度分析.首先對船模自航試驗流程進行了梳理,確定其不確定度來源;然后根據自航試驗原理,提出了不同溫度時試驗數據換算的方法,對ITTC關于自航試驗不確定度分析規程進行補充;其次在試驗數據進行溫度換算之后,計算了船模自航試驗中槳模轉速、推力、扭矩和強制力的不確定度,并進一步計算了相關自航因子的不確定度.分析結果表明:當名義溫度15℃時,按照95%的置信水平,各自航點的轉速的擴展不確定度小于0.4%,推力和扭矩的擴展不確定度均低于1.0%,推力減額的擴展不確定度低于5.5%,伴流分數的擴展不確定度低于1.1%.本試驗的船模自航試驗不確定度分析的方法和步驟可以作為其他水池試驗的參考.
          關鍵詞 船模 ;拖曳水池 ;自航試驗 ;自航因子法 ;模型試驗 ;不確定度
          Uncertainty analysis of benchmark ship model self-propulsion tests
          ZHANG Li a , b , CHEN Jianting a , CHEN Weimin a , b
          a. Marine Technology Division,Shanghai Ship and Shipping Research Institute,Shanghai 200135,China
          b. College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China
          Abstract With reference to the procedures of International Towing Tank Conference (ITTC,2017) and the national standards,the uncertainty of ship model self-propulsion test was analysed.Firstly,the self-propulsion test process was combed to determine the source of uncertainty.According to the test principle of self-propulsion test,a method of converting test data at different temperatures was put forward,which makes up for the defect of ITTC on the uncertainty analysis rule of self-propulsion test.Secondly,the uncertainties of propeller model speed,thrust and torque in the ship model self-propulsion test were calculated,and the uncertainty of the related self-propulsion factor was further calculated.The results show that at the nominal temperature of 15℃,according to the 95% confidence level,the expansion uncertainty of rotational speed is less than 0.4%,and the expansion uncertainty of thrust and torque is less than 1.0%.The extended uncertainty of reduction factors is less than 5.5%,wake factor 1.1%.At the same time,the steps and methods of uncertainty analysis of ship model self-propulsion test can be used as a reference for other tank tests.
          Keywords ship model ; towing tank ; self-propulsion factor ; model test ; uncertainty analysis
          基金資助高技術船舶科研項目;中遠海運集團科研項目;國家自然科學基金資助項目(51809272)

          中圖分類號U661.1
          文獻標志碼A
          文章編號1671-4512(2020)09-0100-07
          參考文獻
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          文獻來源
          張 立, 陳建挺, 陳偉民. 標準船模拖曳水池自航試驗不確定度分析[J]. 華中科技大學學報(自然科學版), 2020, 48(9): 100-106
          DOI:10.13245/j.hust.200917
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