本文選題：絲網(wǎng)印刷 + CFD模擬�。� 參考：《首都經(jīng)濟(jì)貿(mào)易大學(xué)》2016年碩士論文

【摘要】：近幾年來,隨著計(jì)算機(jī)技術(shù)的發(fā)展,CFD(即計(jì)算流體力學(xué))技術(shù)得到廣泛的應(yīng)用,用CFD技術(shù)模擬預(yù)測室內(nèi)的氣流組織以及優(yōu)化室內(nèi)通風(fēng)設(shè)計(jì)方案成為可能。目前,我國對絲網(wǎng)印刷車間VOC濃度分布情況的CFD模擬研究比較少。因此,本研究立足于某企業(yè)絲網(wǎng)印刷工位的毒物擴(kuò)散的實(shí)際情況,利用FLUENT公司推出的專業(yè)軟件FLUENT14.5對該企業(yè)絲網(wǎng)印刷工位的毒物的擴(kuò)散情況進(jìn)行模擬,為下一步設(shè)置車間內(nèi)通風(fēng)口位置提供參考；通過對比不同通風(fēng)量對有機(jī)揮發(fā)物濃度場的影響,找出更為有效的毒物控制對策措施。希望研究結(jié)果能對實(shí)際印刷車間控制污染物擴(kuò)散的決策具有指導(dǎo)意義。本文在對絲網(wǎng)印刷行業(yè)的現(xiàn)狀以及絲網(wǎng)印刷技術(shù)進(jìn)行簡單介紹以及CFD軟件的計(jì)算原理和方法進(jìn)行了全面闡釋的基礎(chǔ)之上,結(jié)合某企業(yè)絲網(wǎng)印刷車間實(shí)際情況,對該絲網(wǎng)印刷車間內(nèi)的VOC的濃度場進(jìn)行了CFD模擬。本文的具體研究內(nèi)容如下：(1)對絲網(wǎng)印刷車間進(jìn)行了數(shù)據(jù)采集,包括絲網(wǎng)印刷車間、門窗、印刷機(jī)的位置、尺寸,采樣點(diǎn)的位置數(shù)據(jù),釋放源的VOC濃度等數(shù)據(jù),以及作業(yè)人員的工時(shí)記錄等資料。(2)利用Gambit建立了該絲網(wǎng)印刷車間的空間幾何模型,將記錄參數(shù)導(dǎo)入FLUENT軟件,進(jìn)行數(shù)值模擬,得出絲網(wǎng)印刷工位在該車間正常工作工況下的VOC濃度場模擬結(jié)果。(3)根據(jù)絲網(wǎng)印刷車間VOC濃度場的模擬結(jié)果,在該車間設(shè)置通風(fēng)裝置,在該車間正常工作情況下,改變絲網(wǎng)印刷車間內(nèi)送風(fēng)量和排風(fēng)量,利用CFD技本模擬不同送風(fēng)量和排風(fēng)量條件下絲網(wǎng)印刷車間內(nèi)VOC的濃度分布狀況,以期找出較為經(jīng)濟(jì)合理的排風(fēng)量和送風(fēng)量,使得絲網(wǎng)印刷工位人體呼吸帶水平斷面上VOC的濃度值降為標(biāo)準(zhǔn)要求以內(nèi),為最優(yōu)送風(fēng)量和排風(fēng)量組合。
[Abstract]:In recent years, with the development of computer technology, CFD (computational fluid dynamics) technology has been widely used, it is possible to use CFD technology to simulate and predict indoor air distribution and optimize indoor ventilation design. At present, the CFD simulation of VOC concentration distribution in screen printing workshop in China is less. Therefore, this study is based on the actual situation of poison diffusion of screen printing station in an enterprise, and simulates the spread of poison in screen printing station of the enterprise by using fluent's professional software fluent 14.5. Through comparing the effect of different ventilation amount on the concentration field of organic volatile, the more effective measures of poison control were found out. It is hoped that the research results will be helpful to the decision of controlling pollutant diffusion in printing workshop. Based on the brief introduction of screen printing industry and screen printing technology as well as the calculation principle and method of CFD software, this paper combines the actual situation of screen printing workshop in a certain enterprise. The concentration field of VOC in the screen printing workshop was simulated by CFD. The specific contents of this paper are as follows: (1) the data collection of screen printing workshop, including screen printing shop, doors and windows, printing machine position, size, sampling point position data, release source VOC concentration data, etc. (2) the spatial geometric model of the screen printing workshop is established by Gambit, and the recording parameters are imported into fluent software, and the numerical simulation is carried out. The simulation results of VOC concentration field of screen printing station under normal working conditions are obtained. (3) according to the simulation results of VOC concentration field in screen printing workshop, ventilation device is installed in the workshop, and under the normal working condition of the workshop, The distribution of VOC concentration in screen printing workshop was simulated by CFD technique in order to find out the more economical and reasonable air supply and air supply. The concentration of VOC on the horizontal section of breath belt of human body in screen printing station is reduced to the standard requirement, which is the optimal combination of air supply and exhaust air.
【學(xué)位授予單位】：首都經(jīng)濟(jì)貿(mào)易大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TS871.1;R135
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本文編號：2089481