本文選題：基準(zhǔn)流場　切入點：粒子圖像測速　出處：《上海交通大學(xué)》2014年博士論文　論文類型：學(xué)位論文

【摘要】：不同于宏觀水動力量的驗證與比對，作為場域分布量的流場特性是以時空變化的速度矢量來表征的，這給了解流場、測量流場、控制與利用流動帶來了更加細(xì)化復(fù)雜的要求。隨著以PIV為代表的現(xiàn)代流場測試技術(shù)與CFD數(shù)值模擬方法的迅速發(fā)展，使得當(dāng)今船舶與海洋工程水動力學(xué)研究更加關(guān)注流場信息的獲取。為從基礎(chǔ)的層面，提供流場評估預(yù)報手段的標(biāo)尺，基準(zhǔn)流場及其“標(biāo)準(zhǔn)數(shù)據(jù)”的研究成為了近年來國際水動力學(xué)界的前沿基礎(chǔ)研究熱點。 流場與流動是有千差萬別的，基準(zhǔn)流場應(yīng)結(jié)合不同水動力學(xué)問題的關(guān)注，而專門設(shè)計實施。2008年以來，ITTC（International Towing TankConference,國際拖曳水池大會）和HTA（Hydro-Testing Alliance,（歐洲）水動力學(xué)試驗聯(lián)盟）前后啟動了船舶與海洋工程水動力學(xué)領(lǐng)域的基準(zhǔn)流場研究工作，分別初步提出了兩維和三維基準(zhǔn)流場的設(shè)計方案。國內(nèi)的相關(guān)研究工作，仍處于空白。 論文選擇這一國際船舶與海洋工程水動力學(xué)領(lǐng)域前沿基礎(chǔ)性課題方向，開展了較系統(tǒng)的獨立研究工作。首先，論文引入成熟CFD工具，系統(tǒng)細(xì)化拓展了ITTC兩維基準(zhǔn)流場的設(shè)計方案，量化預(yù)評估了設(shè)計參數(shù)對流動特性的影響規(guī)律，形成了兩維基準(zhǔn)流場的設(shè)計與PIV流場測量方案；其次，作為參與ITTC精細(xì)流場測試專家委員會在研工作的一部分，在國內(nèi)外首次實施了兩維基準(zhǔn)流場的PIV測試試驗，評估了試驗要素對流場品質(zhì)的量化影響，并與CFD預(yù)評估進(jìn)行分析比對；第三，學(xué)習(xí)實踐了PIV流場測量不確定度分析ITTC推薦規(guī)程，并針對流場的空間不均勻特性，創(chuàng)新嘗試進(jìn)行了測量流場局部不確定度分析研究，獲得了首批具有量化測量不確定度量值的兩維基準(zhǔn)流場基準(zhǔn)檢驗數(shù)據(jù)；最后，基于同樣的研究思路，對HTA提出的三維基準(zhǔn)流場初步設(shè)計方案，進(jìn)行了CFD預(yù)評估，并結(jié)合HTA提供的三家試驗機(jī)構(gòu)的PIV測試結(jié)果的綜合分析，給出了三維基準(zhǔn)流場設(shè)計與PIV測量的修正方案。 基準(zhǔn)流場的設(shè)計評估及其測量不確定度分析，是一項國內(nèi)尚屬空白的前沿基礎(chǔ)性工作，涉及并有助于流場測試技術(shù)與CFD數(shù)值模擬技術(shù)。論文比較完整地實現(xiàn)了兩維基準(zhǔn)流場的設(shè)計、PIV流場測試及其測量結(jié)果的不確定度分析，獲得了具有自主知識產(chǎn)權(quán)的基準(zhǔn)檢驗試驗數(shù)據(jù)；對三維基準(zhǔn)流場的設(shè)計方案也已完成，為后續(xù)的試驗實施奠定了基礎(chǔ)。 本文的主要創(chuàng)新點有： （1）基準(zhǔn)流場的方案設(shè)計，主要是源于研究設(shè)計者對流動現(xiàn)象經(jīng)驗性的認(rèn)識知識；本文系統(tǒng)地引入成熟CFD手段，結(jié)合經(jīng)驗認(rèn)識變化設(shè)計參數(shù)，針對方案設(shè)計要素對流場特性影響規(guī)律進(jìn)行預(yù)評估研究，定性與定量地得到了二維和三維基準(zhǔn)流場的合理設(shè)計方案。 （2）為細(xì)化評價空間非均勻流場的測試質(zhì)量，在探索應(yīng)用PIV流場測量不確定度分析方法的ITTC推薦規(guī)程的基礎(chǔ)上，本文創(chuàng)新開展了PIV流場局部測量不確定度分析方法的研究，綜合評估了二維基準(zhǔn)流場的測量結(jié)果，豐富拓展了PIV流場測量可靠性度量的評價方法，，對提高復(fù)雜流場的PIV測試質(zhì)量有重要的實用價值。 （3）論文開展的二維基準(zhǔn)流場的基準(zhǔn)檢驗試驗、獲取的具有測量不確定度分析的結(jié)果數(shù)據(jù)，以及針對三維基準(zhǔn)流場的設(shè)計與測試方案的修訂建議，均是國內(nèi)外首次開展的前沿基礎(chǔ)性工作，相關(guān)研究結(jié)果將提交納入2014年ITTC大會的精細(xì)流場測試專家委員會的最終報告。
[Abstract]:Different from the macroscopic hydrodynamic forces as validation and comparison, the characteristics of flow field distribution of domain by using the velocity vector field is used to characterize the temporal and spatial variation, to understand the flow field, flow field, flow control and utilization brought require more detailed and complex. With the rapid development of modern simulation technology and CFD to numerical flow field test the representative of PIV, the ship and Ocean Engineering Hydrodynamics research pays more attention to obtain information of the flow field. From the basic level, provide flow estimation and prediction means of reference scale, flow field and "standard data" has become in recent years the international community water dynamics leading basic research hotspot.
The flow field and the flow is different, the benchmark should be combined with different water flow dynamics problem, since specially designed for the implementation of the.2008, ITTC (International Towing TankConference, the international towing tank Conference) and HTA (Hydro-Testing Alliance (Europe) test Alliance launched water dynamics) before and after the ship and ocean Engineering Hydrodynamics benchmark study on flow field of work, were initially put forward a design scheme of two and three-dimensional benchmark flow field. The domestic research work, is still in the blank.
The choice of the international ship and Ocean Engineering Hydrodynamics frontier fundamental research direction, to carry out independent research systematically. Firstly, the introduction of mature CFD tools, the system expands the refinement design scheme of ITTC two dimensional reference field, quantitative pre assessment influence of design parameters on the flow characteristics, the formation of the design of two dimensional flow field and flow field measurement datum PIV scheme; secondly, as in ITTC fine flow field test committee of experts in a part of the research work at home and abroad, the first implementation of the PIV test of two dimensional reference field, evaluated the influence of quantitative quality flow field test elements, and analyzed in comparison with the CFD pre evaluation; third, the study and practice of PIV flow measurement uncertainty analysis and recommendations for ITTC, according to the flow field of the spatially inhomogeneous characteristics, innovation was measured by the flow field of uncertainty The uncertainty analysis, two dimensional flow field benchmark benchmark test data measure the quantitative measurement with the research ideas; finally, based on the same, a preliminary design of the three-dimensional flow field of reference proposed by HTA, the pre CFD assessment, combined with comprehensive analysis provided by HTA three test PIV test results of the mechanism and the correction plan is designed with PIV datum flow measurement.
The uncertainty analysis of design evaluation and measurement reference field, is a domestic leading basic work is still blank, and relates to contribute to the numerical testing technology and simulation technology of CFD. The more complete realization of the design of two dimensional benchmark flow, PIV flow field measurement and its uncertainty analysis of measurement results the benchmark test data, with independent intellectual property rights; the design scheme of the 3D flow field of reference has been completed, which laid the foundation for the follow-up test.
The main innovations of this article are:
(1) design reference field, is mainly due to the research on the flow phenomenon of empirical designer knowledge; this paper systematically introduces the mature CFD means of understanding the change of design parameters for the combination of experience design elements influence the flow field characteristics of the pre assessment research, qualitative and quantitative to obtain reasonable design scheme of 2D and 3D the reference flow field.
(2) to test the quality of non uniform flow detailed evaluation space, to explore the application of PIV based uncertainty analysis method of ITTC Recommended Practice for the measurement of flow field, the innovation of this paper carried out the PIV flow field measurement uncertainty analysis method, comprehensive evaluation of the measurement results of two-dimensional benchmark flow field, enrich the evaluation method PIV measurement of flow field measurement reliability, has important practical value to improve the quality of PIV testing in complex flow fields.
(3) the benchmark test paper of the two-dimensional reference field, obtained with uncertainty analysis results, and design and testing scheme for three-dimensional flow field of the benchmark revision, are the leading basic work at home and abroad for the first time to carry out the relevant research results will be submitted to the final report of the Committee of experts fine flow test in the 2014 ITTC conference.

【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2014
【分類號】：U661.1

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