本文選題：氣力輸送系統(tǒng) + 噴射器　； 參考：《安徽理工大學(xué)》2017年碩士論文

【摘要】：氣力輸送裝置具有不直接消耗機(jī)械能而實(shí)現(xiàn)增壓過程,輸送過程相對(duì)傳統(tǒng)機(jī)械輸送具有安全、結(jié)構(gòu)簡單、易于自動(dòng)化過程、對(duì)環(huán)境污染少,可以使固體顆粒沿著輸送管道實(shí)現(xiàn)一到多地的輸送和多地向一地的聚集等優(yōu)點(diǎn)�，F(xiàn)已廣泛運(yùn)用在礦產(chǎn)、電力、水泥、糧食、鑄造、建材等領(lǐng)域中。噴射器是氣力輸送系統(tǒng)的關(guān)鍵裝置,其結(jié)構(gòu)和性能都必受到人們?cè)絹碓蕉嗟年P(guān)注。從噴射器工作原理出發(fā),對(duì)設(shè)計(jì)所涉及到的理論計(jì)算公式進(jìn)行了歸納。由實(shí)際設(shè)計(jì)要求,采用最優(yōu)化結(jié)構(gòu)設(shè)計(jì)法,對(duì)噴射器的主要尺寸進(jìn)行了設(shè)計(jì)。氣力輸送系統(tǒng)涉及到兩相流動(dòng),由于兩相流動(dòng)的復(fù)雜性,對(duì)于氣力輸送相關(guān)的設(shè)計(jì)計(jì)算大部分采用理論和實(shí)驗(yàn)相結(jié)合的方法。本文利用FLUENT軟件,采用雙歐拉模型和離散模型對(duì)其內(nèi)部流動(dòng)進(jìn)行了數(shù)值模擬。首先利用三維建模工具對(duì)噴射器模型建立,再通過網(wǎng)格劃分軟件對(duì)其進(jìn)行網(wǎng)格劃分,最后在FLUENT軟件中完成對(duì)噴射器的數(shù)值模擬。通過數(shù)值模擬驗(yàn)證所設(shè)計(jì)結(jié)構(gòu)的準(zhǔn)確性,并對(duì)其內(nèi)部的流動(dòng)特性進(jìn)行了分析�？紤]了結(jié)構(gòu)參數(shù)改變對(duì)氣力輸送噴射器的影響,得到了靜壓變化曲線,固體顆粒速度矢量圖、氣體湍流動(dòng)能圖和速度云圖等。分析了不同結(jié)構(gòu)參數(shù)對(duì)氣力輸送系統(tǒng)的性能影響,并對(duì)氣力輸送相關(guān)的輸送管道的顆粒懸浮理論做了驗(yàn)證。所運(yùn)用的設(shè)計(jì)理論過程和數(shù)值模擬過程,對(duì)噴射器在工程上的應(yīng)用有一定的指導(dǎo)作用。
[Abstract]:Pneumatic conveying device has the advantages of realizing pressurized process without directly consuming mechanical energy. Compared with traditional mechanical transportation, the conveying process is safe, simple in structure, easy to automate process, and less pollution to the environment. The solid particles can be transported one to many places along the conveying pipeline and aggregating from one place to one place. Has been widely used in minerals, electricity, cement, grain, casting, building materials and other fields. Ejector is the key device of pneumatic conveying system, its structure and performance will be paid more and more attention. Based on the working principle of the ejector, the theoretical calculation formulas involved in the design are summarized. According to the actual design requirements, the main dimensions of the ejector are designed by the method of optimum structure design. Pneumatic conveying system involves two-phase flow. Due to the complexity of two-phase flow, most of the design and calculation of pneumatic conveying are based on the combination of theory and experiment. In this paper, FLUENT software is used to simulate the internal flow with double Euler model and discrete model. Firstly, the ejector model is built by using 3D modeling tools, then the ejector model is meshed by the meshing software. Finally, the numerical simulation of the ejector is completed in FLUENT software. The accuracy of the designed structure is verified by numerical simulation, and its internal flow characteristics are analyzed. Considering the influence of the structural parameters on the pneumatic conveying injector, the static pressure variation curve, the velocity vector diagram of solid particles, the kinetic energy map of gas turbulence and the velocity cloud diagram are obtained. The influence of different structural parameters on the performance of pneumatic conveying system is analyzed, and the particle suspension theory of pneumatic conveying pipeline is verified. The design theory process and numerical simulation process are used to guide the application of ejector in engineering.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH232

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳偉雄;陳會(huì)強(qiáng);石朝胤;王迎春;種道彤;嚴(yán)俊杰;;喉嘴距對(duì)噴射器性能影響的實(shí)驗(yàn)研究[J];中國科學(xué)院大學(xué)學(xué)報(bào);2016年02期

2 王明旭;秦超;李永祥;曹憲周;;氣力輸送過程中糧食顆粒的輸送特性研究[J];農(nóng)機(jī)化研究;2014年09期

3 黎國梁;黃寧;梁一銘;;基于k-ε方程對(duì)高層建筑豎向通道中有毒煙氣運(yùn)動(dòng)的數(shù)值模擬[J];廣西城鎮(zhèn)建設(shè);2013年10期

4 陳琪;呂宇捷;佟楊;李濤;陳光明;唐黎明;;跨臨界CO_2熱泵系統(tǒng)的噴射器特性[J];化工學(xué)報(bào);2012年S2期

5 曹憲周;魯選民;;氣力輸送技術(shù)的發(fā)展及其在糧食行業(yè)中的應(yīng)用[J];糧食與飼料工業(yè);2011年06期

6 許瑞;杜長龍;曾銳;張佳佳;;不同收縮角噴嘴的射流仿真研究[J];礦山機(jī)械;2011年02期

7 吳健偉;;粉煤灰氣力輸送噴射器的設(shè)計(jì)及應(yīng)用[J];應(yīng)用能源技術(shù);2010年10期

8 朱健云;楊曉燕;歸柯庭;王芳;李慶釗;;水平管氣力輸送最佳經(jīng)濟(jì)速度的模擬研究[J];工程熱物理學(xué)報(bào);2008年10期

9 王皓為;朱燁;鐘志華;金保升;;氣固噴射器的三維數(shù)值模擬[J];能源研究與利用;2008年01期

10 劉向軍;石磊;徐旭常;;稠密氣固兩相流歐拉-拉格朗日法的研究現(xiàn)狀[J];計(jì)算力學(xué)學(xué)報(bào);2007年02期

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