發(fā)布時(shí)間：2018-02-02 05:31

  本文關(guān)鍵詞： 水下航行體 空化流動(dòng) 通氣空化 水洞實(shí)驗(yàn) 壓力脈動(dòng) 旋渦結(jié)構(gòu)　出處：《哈爾濱工業(yè)大學(xué)》2017年博士論文　論文類型：學(xué)位論文

【摘要】：水下航行體空化流動(dòng)是一種復(fù)雜的氣液多相湍流流動(dòng),包含了空泡的生長(zhǎng)、斷裂、脫落、潰滅等多種非定常流動(dòng)過(guò)程,涉及可壓縮、旋渦運(yùn)動(dòng)和大尺度流動(dòng)分離等復(fù)雜流動(dòng)現(xiàn)象。對(duì)水下航行體空化流動(dòng)過(guò)程中空泡形態(tài)的非定常特性及壓力脈動(dòng)特性的研究有助于對(duì)空化流動(dòng)規(guī)律的掌握,并關(guān)系到水下武器、航空航天等領(lǐng)域內(nèi)關(guān)鍵技術(shù)問(wèn)題的解決,具有重要的理論意義和工程價(jià)值。本文采用水洞實(shí)驗(yàn)與數(shù)值模擬相結(jié)合的方法,針對(duì)水下航行體空化流動(dòng)問(wèn)題,開(kāi)展了繞航行體模型自然空化與通氣空化流動(dòng)過(guò)程中空泡形態(tài)的非定常演變特性及壓力脈動(dòng)特性的研究,主要研究?jī)?nèi)容和成果如下:建立了水下航行體自然空化和通氣空化水洞實(shí)驗(yàn)的多場(chǎng)同步測(cè)量實(shí)驗(yàn)方法。該方法把高速攝像系統(tǒng)、壓力測(cè)量系統(tǒng)和通氣系統(tǒng)組建成一個(gè)整體,實(shí)現(xiàn)了水洞實(shí)驗(yàn)過(guò)程中自然空化或通氣空化過(guò)程空泡形態(tài)演變和壓力脈動(dòng)變化過(guò)程的同步采集,并對(duì)航行體肩部空泡形態(tài)和航行體表面壓力脈動(dòng)的非定常流動(dòng)特性進(jìn)行同步分析�；诙鄨�(chǎng)同步測(cè)量方法,開(kāi)展了自然空泡和通氣空泡形態(tài)演變及其誘導(dǎo)表面壓力脈動(dòng)特性研究,掌握了不同空化數(shù)下自然空泡與通氣空泡斷裂、脫落、潰滅過(guò)程誘導(dǎo)的壓力脈動(dòng)規(guī)律及頻域特性。通過(guò)對(duì)航行體模型空化過(guò)程空泡形態(tài)演變和壓力脈動(dòng)同步測(cè)量數(shù)據(jù)分析,獲得了自然空泡與通氣空泡脫落方式、脫落頻率特征和航行體表面壓力脈動(dòng)變化規(guī)律。開(kāi)展了通氣啟動(dòng)和通氣停止過(guò)程非定常云狀空泡發(fā)展與壓力脈動(dòng)特性研究,掌握了通氣啟動(dòng)和停止后空泡形態(tài)演變和壓力脈動(dòng)變化規(guī)律。通過(guò)對(duì)通氣啟動(dòng)后通氣空泡形態(tài)演變過(guò)程研究,掌握通氣啟動(dòng)后空泡形態(tài)演變過(guò)程和通氣空泡發(fā)展過(guò)程航行體表面壓力隨通氣率變化規(guī)律;針對(duì)通氣空泡停止通氣后,獲得了空泡潰滅演變過(guò)程及空泡潰滅誘導(dǎo)的壓力脈動(dòng)特性�；诰|(zhì)平衡流模型,發(fā)展了基于標(biāo)準(zhǔn)k-ε的濾波器湍流模型,建立了非定常通氣空化多相流動(dòng)的三維數(shù)值模擬方法。以水洞實(shí)驗(yàn)數(shù)據(jù)為基準(zhǔn),通過(guò)實(shí)驗(yàn)過(guò)程空泡形態(tài)的演變過(guò)程及航行體表面壓力脈動(dòng)特征,驗(yàn)證了基于標(biāo)準(zhǔn)k-ε的濾波器湍流模型對(duì)非定常通氣空化流動(dòng)過(guò)程中空泡形態(tài)演變、壓力脈動(dòng)特性及流場(chǎng)細(xì)節(jié)預(yù)示的有效性�；诮⒌姆嵌ǔＭ饪栈S數(shù)值模擬方法,開(kāi)展非定常通氣條件空化流動(dòng)數(shù)值模擬研究。分析了通氣空泡的演變過(guò)程對(duì)航行體周圍流場(chǎng)結(jié)構(gòu)的影響及通氣空化的旋渦運(yùn)動(dòng)特性,掌握了非定常通氣空化過(guò)程中空泡發(fā)展、斷裂、脫落與速度矢量、流體動(dòng)力、旋渦結(jié)構(gòu)及渦量傳輸?shù)年P(guān)系,揭示了通氣空化形態(tài)演變過(guò)程及其誘導(dǎo)壓力脈動(dòng)的機(jī)理。
[Abstract]:Cavitation flow of underwater vehicle is a kind of complicated gas-liquid multiphase turbulent flow, which includes cavitation growth, fracture, shedding, collapse and other unsteady flow processes, involving compressible flow. The study on the unsteady characteristics of cavitation and pressure pulsation in cavitation flow of underwater vehicle is helpful to the understanding of cavitation flow law. It is of great theoretical significance and engineering value to solve the key technical problems in the field of underwater weapon, aerospace and so on. In this paper, the method of combination of water tunnel experiment and numerical simulation is adopted. In order to solve the cavitation flow problem of underwater vehicle, the unsteady evolution characteristics and pressure pulsation characteristics of cavitation flow in natural cavitation and aerated cavitation flow around the vehicle model were studied. The main research contents and results are as follows: a multi-field synchronous measurement method for underwater vehicle natural cavitation and aeration water tunnel experiments is established. The pressure measurement system and the ventilation system are set up as a whole to realize the synchronous collection of cavitation morphology and pressure fluctuation in the process of natural cavitation or aeration cavitation in the process of water tunnel experiment. The unsteady flow characteristics of the surface pressure pulsation and the shape of the cavitation on the surface of the navigation body are analyzed synchronously, based on the method of multi-field synchronous measurement. The morphological evolution of natural cavitation and aerated cavitation and the characteristics of induced surface pressure pulsation were studied. The fracture and shedding of natural cavitation and aerated cavitation were mastered under different cavitation numbers. By analyzing the data of cavitation morphology evolution and pressure pulsation during cavitation process, the natural cavitation and aerated cavitation shedding mode were obtained. The characteristics of falling off frequency and pressure pulsation on the surface of the vehicle were studied. The development of unsteady cloud cavitation and pressure pulsation in the process of ventilation start-up and ventilation stop were studied. The changes of cavitation morphology and pressure fluctuation after ventilation start and stop were studied. Understand the evolution process of cavitation morphology and aeration cavitation development process after ventilation start, and the change of surface pressure with aeration rate in the process of aeration cavitation development; The evolution process of cavitation collapse and pressure pulsation induced by bubble collapse were obtained. Based on the homogeneous equilibrium flow model, the filter turbulence model based on standard k- 蔚 was developed. A three-dimensional numerical simulation method for unsteady aerated cavitation multiphase flow is established. Based on the experimental data of water tunnel, the evolution process of cavitation morphology and the characteristics of pressure pulsation on the surface of the vehicle are studied. The filter turbulence model based on standard k- 蔚 is used to verify the evolution of cavitation morphology in unsteady ventilated cavitation flow. The effectiveness of pressure fluctuation characteristics and flow field details prediction. Based on the established three-dimensional numerical simulation method of unsteady ventilation cavitation. The numerical simulation of cavitation flow under unsteady ventilation conditions was carried out. The effects of the evolution of aerated cavitation on the flow field structure around the aeration body and the vortex motion characteristics of aeration cavitation were analyzed. The relationship between cavitation development, fracture, shedding and velocity vector, hydrodynamic force, vortex structure and vorticity transmission during unsteady ventilation cavitation is mastered. The evolution of aeration cavitation morphology and the mechanism of induced pressure pulsation are revealed.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2017
【分類號(hào)】：O35

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 潘森森;空化核最新研究評(píng)述[J];力學(xué)進(jìn)展;1985年03期

2 倪漢根,黃建波,徐福生;繞流體初生空化數(shù)的概率估計(jì)[J];水利學(xué)報(bào);1986年10期

3 許衛(wèi)新,程貫一,潘森森;空化起始的理論預(yù)測(cè)——模糊空化系統(tǒng)[J];力學(xué)學(xué)報(bào);1987年06期

4 吳建華;柴恭純;;垂直匯流漩渦空化的聲測(cè)研究[J];水利水運(yùn)科學(xué)研究;1989年03期

5 賀成龍;吳建華;劉文莉;;空化應(yīng)用研究進(jìn)展綜述[J];嘉興學(xué)院學(xué)報(bào);2008年03期

6 潘森森;空化機(jī)理的近代研究[J];力學(xué)進(jìn)展;1979年04期

7 肖天鐸;深水緩坡突體和升臺(tái)的初生空化數(shù)顯解式[J];水利學(xué)報(bào);1985年08期

8 夏維洪,孫景琴,賈春英;減壓模型的初生空化相似律[J];水利學(xué)報(bào);1985年09期

9 楊志明,李煒;關(guān)于消失空化的機(jī)理[J];水動(dòng)力學(xué)研究與進(jìn)展;1987年04期

10 鄭國(guó)華 ,黃熾元;計(jì)入水流阻力的等空化數(shù)曲線計(jì)算[J];石河子農(nóng)學(xué)院學(xué)報(bào);1989年02期

相關(guān)會(huì)議論文 前10條

1 張偉;張瑞平;陳建業(yè);熊煒;張小斌;邱利民;;基于動(dòng)態(tài)空化模型繞數(shù)值研究扭曲三維翼型的非穩(wěn)態(tài)空化過(guò)程[A];第二十五屆全國(guó)水動(dòng)力學(xué)研討會(huì)暨第十二屆全國(guó)水動(dòng)力學(xué)學(xué)術(shù)會(huì)議文集（下冊(cè)）[C];2013年

2 彭曉星;洪方文;;25~(th)ITTC空化專家委員會(huì)報(bào)告綜述[A];2008年船舶水動(dòng)力學(xué)學(xué)術(shù)會(huì)議暨中國(guó)船舶學(xué)術(shù)界進(jìn)入ITTC30周年紀(jì)念會(huì)論文集[C];2008年

3 曹彥濤;彭曉星;徐良浩;;繞三維扭曲水翼云空化演化數(shù)值模擬[A];第十三屆全國(guó)水動(dòng)力學(xué)學(xué)術(shù)會(huì)議暨第二十六屆全國(guó)水動(dòng)力學(xué)研討會(huì)論文集——F船舶與海洋工程流體力學(xué)[C];2014年

4 洪方文;褚學(xué)森;彭曉星;顏開(kāi);劉登成;陳瑋琪;;中國(guó)船舶科學(xué)研究中心近期空化流動(dòng)研究進(jìn)展[A];第十一屆全國(guó)水動(dòng)力學(xué)學(xué)術(shù)會(huì)議暨第二十四屆全國(guó)水動(dòng)力學(xué)研討會(huì)并周培源誕辰110周年紀(jì)念大會(huì)文集（上冊(cè)）[C];2012年

5 易燦;李根生;張定國(guó);;圍壓下噴嘴空化起始能力的實(shí)驗(yàn)研究[A];第十八屆全國(guó)水動(dòng)力學(xué)研討會(huì)文集[C];2004年

6 楊慶;張建民;戴光清;李鵬;;高速突擴(kuò)流空化初生及比尺效應(yīng)試驗(yàn)研究[A];第二十一屆全國(guó)水動(dòng)力學(xué)研討會(huì)暨第八屆全國(guó)水動(dòng)力學(xué)學(xué)術(shù)會(huì)議暨兩岸船舶與海洋工程水動(dòng)力學(xué)研討會(huì)文集[C];2008年

7 彭曉星;;發(fā)展空化及其不穩(wěn)定現(xiàn)象研究[A];第二十五屆全國(guó)水動(dòng)力學(xué)研討會(huì)暨第十二屆全國(guó)水動(dòng)力學(xué)學(xué)術(shù)會(huì)議文集（上冊(cè)）[C];2013年

8 葉玉玲;趙冉;;水下航行體快速控制原型技術(shù)研究[A];2009系統(tǒng)仿真技術(shù)及其應(yīng)用學(xué)術(shù)會(huì)議論文集[C];2009年

9 王建國(guó);姜春萌;吳方良;周軼美;;水下航行體導(dǎo)航技術(shù)綜述[A];第十五屆中國(guó)海洋（岸）工程學(xué)術(shù)討論會(huì)論文集(上)[C];2011年

10 李勝忠;馬向能;趙峰;;水下航行體初始設(shè)計(jì)階段操縱運(yùn)動(dòng)預(yù)報(bào)[A];2008年船舶水動(dòng)力學(xué)學(xué)術(shù)會(huì)議暨中國(guó)船舶學(xué)術(shù)界進(jìn)入ITTC30周年紀(jì)念會(huì)論文集[C];2008年

相關(guān)博士學(xué)位論文 前10條

1 張孝石;水下航行體空化流動(dòng)與壓力脈動(dòng)特性研究[D];哈爾濱工業(yè)大學(xué);2017年

2 王健;水力裝置空化空蝕數(shù)值計(jì)算與試驗(yàn)研究[D];江蘇大學(xué);2015年

3 張寧;離心泵內(nèi)部非穩(wěn)態(tài)流動(dòng)激勵(lì)特性研究[D];江蘇大學(xué);2016年

4 孫鐵志;熱力學(xué)敏感流體空化流動(dòng)三維數(shù)值模擬研究[D];哈爾濱工業(yè)大學(xué);2016年

5 蘇硯文;基于LBM-LES的水翼繞流及空化流的并行數(shù)值模擬與實(shí)驗(yàn)研究[D];中國(guó)農(nóng)業(yè)大學(xué);2017年

6 郭嬙;葉頂間隙泄漏渦流及空化流場(chǎng)特性研究[D];中國(guó)農(nóng)業(yè)大學(xué);2017年

7 楊慶;空化初生機(jī)理及比尺效應(yīng)研究[D];四川大學(xué);2005年

8 王柏秋;水下高速航行體非定常空化流場(chǎng)數(shù)值計(jì)算[D];哈爾濱工業(yè)大學(xué);2013年

9 李曉俊;離心泵葉片前緣空化非定常流動(dòng)機(jī)理及動(dòng)力學(xué)特性研究[D];江蘇大學(xué);2013年

10 楊靜;混流式水輪機(jī)尾水管空化流場(chǎng)研究[D];中國(guó)農(nóng)業(yè)大學(xué);2013年

相關(guān)碩士學(xué)位論文 前10條

1 黃旭;表面特性對(duì)繞水翼空化流動(dòng)影響的研究[D];北京理工大學(xué);2015年

2 冉文q，

本文編號(hào)：1483740