本文選題：高速列車　切入點：防風(fēng)明洞　出處：《蘭州交通大學(xué)》2015年碩士論文

【摘要】：蘭新第二雙線“百里風(fēng)區(qū)”建立了世界上第一座防風(fēng)明洞。防風(fēng)明洞與隧道結(jié)構(gòu)類似,但作為地面上的防風(fēng)建筑,在其一側(cè)設(shè)有開孔。國內(nèi)外對列車進出隧道空氣動力學(xué)問題研究已有較多成果,但對大風(fēng)下高速列車進出防風(fēng)明洞的空氣動力學(xué)問題還未有研究。蘭新第二雙線線路的運營車采用我國長春軌道客車股份有限公司研制的CRH5型動車組。本文以CRH5型動車組及我國四方機車車輛股份有限公司提供的CRH2型動車組為研究對象,采用數(shù)值模擬方法,對高速列車進出防風(fēng)明洞及隧道口的空氣動力效應(yīng)進行研究。首先,為驗證數(shù)值方法計算的正確性,采用國內(nèi)現(xiàn)車試驗的交會壓力波數(shù)據(jù)進行驗證,根據(jù)試驗的介紹,建立CRH2型車會車模型,進行數(shù)值計算并與試驗數(shù)據(jù)進行對比,得出合理的數(shù)值計算方法。其次,對于大風(fēng)下列車的運行,分析了防風(fēng)明洞的繞流特性,對列車駛過與未駛過擋風(fēng)墻的繞流流場特性進行分析,同時也分析了防風(fēng)明洞洞口交會的壓力場和速度場,給出了單車進出明洞及隧道口過程中車體壓力波動的變化規(guī)律。再次,對CRH5型車及CRH2型車進出防風(fēng)明洞、隧道及洞口交會的氣動力及力矩進行對比分析,從數(shù)值模擬的計算結(jié)果簡單分析了兩種車型同種運行環(huán)境下的氣動特性。對同種車型不同運行工況的結(jié)果也進行了對比,得出了運行較穩(wěn)定的工況。最后,對列車的運行存在影響的因素——車速、風(fēng)速及風(fēng)向角進行了較系統(tǒng)的研究,分析了車速、風(fēng)速變化對列車側(cè)向力、升力及傾覆力矩的影響規(guī)律。本文對高速列車進出防風(fēng)明洞及隧道口的氣動特性進行數(shù)值分析,本文的研究方法及結(jié)論可以為進一步的系統(tǒng)化研究提供參考,同時也可為列車的運行提供參考。
[Abstract]:Lanzhou second double "Barry wind zone" established the world's first wind Myeongdong. Similar wind Myeongdong and tunnel structure, but as a windbreak building on the ground, on its side is provided with an opening at home and abroad. On the train passing through tunnel aerodynamics research have more achievements, but the study of aerodynamic problems of high-speed trains under strong wind there is no import wind Myeongdong. Lanzhou second double line operation vehicle using CRH5 type EMU developed Changchun rail passenger Limited by Share Ltd in China. Based on the CRH5 CRH2 EMU EMU and China Sifang locomotive Limited by Share Ltd as the research object, using numerical simulation method to study the aerodynamic effect of high speed train the import and export of the wind tunnel tunnel. Firstly, in order to verify the correctness of the calculation of numerical method, air pressure test using domestic car number According to the verification, according to the introduction, the establishment of CRH2 type car car model, calculated and compared with experimental data, the calculation method of reasonable value. Secondly, for the wind under the train, analyzes the flow characteristics of the wind flow around the tunnel, the train passing and not passing the characteristics of analysis, but also analyzes the wind Myeongdong intersection hole pressure field and velocity field and variation of given body pressure fluctuation and the tunnel import bicycle Myeongdong process. Once again, CRH5 type and CRH2 type of car car import wind Myeongdong, aerodynamic force and moment of tunnel and the intersection were analyzed from numerical calculation the simulation results of a simple analysis of the two models of the same operating environment. The aerodynamic characteristics of the same models under different operating conditions results were compared, the stable operation condition. After the running of train influence factors -- speed, wind speed and wind direction were studied systematically, analyzed the change of wind speed of the train speed, lateral force, lift force and overturning moment. The influence of dynamic characteristics of the high-speed train passing through tunnel and wind tunnel gas numerical analysis, research methods and the conclusion of this paper can provide a reference for further systematic research, but also can provide a reference for the operation of the train.

【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U451.3;U453.1

【參考文獻】

相關(guān)期刊論文 前1條

1 拉有玉;李永樂;何向東;;蘭新鐵路第二雙線防風(fēng)技術(shù)及工程設(shè)計[J];石家莊鐵道大學(xué)學(xué)報(自然科學(xué)版);2010年04期

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本文編號：1691152