發(fā)布時(shí)間：2018-03-06 21:04

  本文選題：ICEM　切入點(diǎn)：CFD　出處：《武漢理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：包裝行業(yè)是與人類生活緊密相關(guān)的行業(yè)，人們對(duì)液體相關(guān)的食品、飲品、藥品等消耗量越來(lái)越大，這對(duì)包裝行業(yè)的發(fā)展起到促進(jìn)作用，由此可見(jiàn)人們高品質(zhì)的生活離不開(kāi)先進(jìn)的包裝設(shè)備，本論文的研究對(duì)象灌裝設(shè)備就是包裝設(shè)備中的一種。國(guó)內(nèi)灌裝設(shè)備研發(fā)能力不足、灌裝流體理論研究不夠全面是制約灌裝技術(shù)發(fā)展的重要因素，鑒于現(xiàn)狀，筆者便對(duì)自主研發(fā)制造的灌裝試驗(yàn)設(shè)備進(jìn)行流場(chǎng)分析，并且結(jié)合灌裝試驗(yàn)，得到流體在灌裝設(shè)備中的運(yùn)動(dòng)規(guī)律，這些規(guī)律的研究對(duì)包裝行業(yè)的發(fā)展有一定價(jià)值。 為更全面研究流體的運(yùn)動(dòng)規(guī)律，本論文采取的研究方法是將試驗(yàn)分析與數(shù)值分析相結(jié)合。試驗(yàn)分析采取正交試驗(yàn)的方法，數(shù)值分析試驗(yàn)主要是進(jìn)行多組的數(shù)值分析，數(shù)值分析的過(guò)程是先建立模型，轉(zhuǎn)換格式之后導(dǎo)入到ICEM CFD中，并對(duì)模型進(jìn)行結(jié)構(gòu)性的網(wǎng)格劃分，，以保證較高的計(jì)算精度，最后導(dǎo)入到fluent之中完成求解。目前，運(yùn)用此種方法對(duì)灌裝試驗(yàn)設(shè)備進(jìn)行研究尚不多見(jiàn)。 本文研究?jī)?nèi)容主要分為以下三個(gè)部分： 第一部分：對(duì)灌裝管道的變徑結(jié)構(gòu)進(jìn)行數(shù)值分析試驗(yàn)，灌裝管道共有五種變徑結(jié)構(gòu)，設(shè)定兩種流體并且具有三種不同的流體速度，探討流體在不同變徑結(jié)構(gòu)的管道中的運(yùn)動(dòng)狀態(tài)，找出流體的運(yùn)動(dòng)規(guī)律，有助于設(shè)計(jì)合理的變徑結(jié)構(gòu)。 第二部分：首先設(shè)計(jì)正交試驗(yàn)表，對(duì)灌裝設(shè)備進(jìn)行灌裝試驗(yàn)，找到影響灌裝效果的因素的主次；然后對(duì)不同形狀的灌裝噴嘴進(jìn)行數(shù)值分析試驗(yàn)，得到不同流體在不同條件下在不同噴嘴中的運(yùn)動(dòng)狀態(tài)，結(jié)合灌裝試驗(yàn)與數(shù)值模擬試驗(yàn)，找到各個(gè)因素影響灌裝效果的機(jī)理，有助于設(shè)計(jì)噴嘴的形狀。 第三部分：對(duì)活塞泵運(yùn)行過(guò)程進(jìn)行流場(chǎng)分析，若按照活塞泵的真實(shí)運(yùn)動(dòng)情況進(jìn)行數(shù)值分析，難度非常大，為了順利完成對(duì)活塞泵的流場(chǎng)分析，將活塞泵的運(yùn)動(dòng)過(guò)程簡(jiǎn)化為活塞運(yùn)動(dòng)和閥芯運(yùn)動(dòng)，然后分別對(duì)活塞運(yùn)動(dòng)和閥芯運(yùn)動(dòng)進(jìn)行流場(chǎng)分析，得到流體在其內(nèi)部的運(yùn)動(dòng)狀態(tài)，找出流體運(yùn)動(dòng)規(guī)律，有助于優(yōu)化泵體及閥芯的結(jié)構(gòu)。 本論文創(chuàng)新的提出運(yùn)用后處理結(jié)果中的壓力、湍動(dòng)能以及氣相體積率三項(xiàng)指標(biāo)來(lái)衡量流體在管道中的流動(dòng)狀態(tài)，然后運(yùn)用matlab對(duì)大量的試驗(yàn)數(shù)據(jù)進(jìn)行處理與分析，最終得到影響灌裝效果因素的主次，管道變徑結(jié)構(gòu)的設(shè)計(jì)方法，灌裝噴嘴形狀的設(shè)計(jì)方法以及流體在活塞泵運(yùn)行過(guò)程中的流動(dòng)狀態(tài)，對(duì)于設(shè)計(jì)更為優(yōu)良的活塞泵提供了理論依據(jù)。
[Abstract]:Packaging industry is closely related to human life. People consume more and more liquid related food, drink, medicine and so on, which plays a role in promoting the development of packaging industry. This shows that people can not live without advanced packaging equipment, the research object of this paper filling equipment is one of the packaging equipment. Domestic filling equipment R & D capacity is insufficient, The theoretical study of filling fluid is an important factor restricting the development of filling technology. In view of the present situation, the author analyzes the flow field of the self-developed filling test equipment, and combines with the filling test. The laws of fluid movement in filling equipment are obtained, and the research of these laws is of value to the development of packaging industry. In order to study the motion law of fluid more comprehensively, the research method adopted in this paper is to combine the experimental analysis with the numerical analysis. The experimental analysis adopts the method of orthogonal test, and the numerical analysis experiment mainly carries on the multi-group numerical analysis. The process of numerical analysis is to establish the model, convert the format and import it into ICEM CFD, and divide the model into structural meshes to ensure higher calculation accuracy. Finally, the model is imported into fluent to complete the solution. It is rare to study the filling test equipment by this method. The content of this paper is divided into the following three parts:. The first part: the numerical analysis and test of the variable diameter structure of the filling pipeline. There are five kinds of variable diameter structure in the filling pipeline, two kinds of fluid are set and there are three different fluid velocities. It is helpful to design a reasonable variable diameter structure by discussing the moving state of fluid in the pipeline with different diameters and finding out the motion law of the fluid. The second part: first, the orthogonal test table is designed, and the filling test of filling equipment is carried out to find out the main and secondary factors that affect the filling effect, and then the numerical analysis test is carried out on different shape filling nozzles. The moving states of different fluids in different nozzles under different conditions are obtained. Combined with the filling test and numerical simulation test, the mechanism of various factors affecting the filling effect is found, which is helpful to design the shape of the nozzle. The third part: the flow field analysis of piston pump operation process, if according to the real piston pump motion analysis, it is very difficult, in order to successfully complete the piston pump flow field analysis, The motion process of piston pump is simplified as piston motion and valve core motion. Then the flow field of piston motion and valve core motion are analyzed, and the movement state of fluid inside is obtained, and the fluid motion law is found out. It helps to optimize the structure of pump body and valve core. In this paper, three indexes of pressure, turbulent kinetic energy and gas phase volume ratio in the post-processing results are proposed to measure the flow state of the fluid in the pipeline, and then a large number of experimental data are processed and analyzed by matlab. Finally, the main and secondary factors affecting the filling effect, the design method of pipeline variable diameter structure, the design method of filling nozzle shape and the flow state of fluid in the operation of piston pump are obtained. It provides a theoretical basis for the better design of piston pump.
【學(xué)位授予單位】：武漢理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB487

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3 余新e

本文編號(hào)：1576479