本文選題：污染物 + 實驗測量��； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：現(xiàn)代社會大量建筑裝修材料和空調(diào)設(shè)備的不當(dāng)使用,空調(diào)房間的空氣質(zhì)量問題已成為人們?nèi)粘Ｉ畹闹匾P(guān)注點(diǎn)之一。同時空調(diào)房間普遍都會置有家具或者利用擋板進(jìn)行區(qū)域的劃分,特別是人口相對密集的辦公區(qū)域就常利用擋板進(jìn)行內(nèi)部隔斷分區(qū)。這樣長此以往室內(nèi)會有越來越多有害氣體污染物的積累,同時日益密閉的室內(nèi)環(huán)境更加容易造成室內(nèi)空氣品質(zhì)的嚴(yán)重惡化。送風(fēng)方式、污染物特性以及內(nèi)部分區(qū)等這些因素都會改變空調(diào)房間氣流組織分布情況和污染物的排除效果,對室內(nèi)氣體流動和污染物分布影響較大,值得研究。目前針對前兩個方面的研究較多,而針對擋板造成的室內(nèi)分區(qū)對室內(nèi)空氣品質(zhì)影響的研究則相對來說較少,因此十分有必要研究室內(nèi)分區(qū)、送風(fēng)參數(shù)以及污染源位置共同作用下對室內(nèi)空氣品質(zhì)的影響。本文根據(jù)已有實驗條件,設(shè)計實驗方案,通過現(xiàn)場測量的方法,得出頂送下回和下送上回兩種通風(fēng)形式下室內(nèi)各測點(diǎn)的速度值和溫度值,并且整理實驗數(shù)據(jù)。通過CFD數(shù)值模擬技術(shù),應(yīng)用FLUENT軟件對實驗?zāi)Ｐ瓦M(jìn)行數(shù)值模擬計算,通過建立k-ε雙方程紊流模型對所研究的問題進(jìn)行數(shù)值模擬,得出相應(yīng)結(jié)果。通過將實驗值和模擬值直接進(jìn)行比較、進(jìn)一步采用與文獻(xiàn)的實驗研究數(shù)據(jù)做對比的方法、以及采用符號檢驗法來檢驗實驗值和模擬值的差異顯著性這三種比較方法,從而很好的驗證了數(shù)值模擬計算的模型在研究此類問題的可行性和可靠性。在充分驗證數(shù)學(xué)模型和數(shù)值模擬準(zhǔn)確性的前提下,進(jìn)一步延伸數(shù)值模擬來研究室內(nèi)分區(qū)條件下氣流組織情況及污染物的分布和擴(kuò)散特性。其中主要針對室內(nèi)不同高度的擋板、不同送風(fēng)形式、不同送風(fēng)速度以及污染物分布位置不同等工況下進(jìn)行數(shù)值模擬,對比各個工況下室內(nèi)速度場和污染物濃度場的差異,得出室內(nèi)空氣品質(zhì)較優(yōu)的因素搭配,進(jìn)而總結(jié)出在不同工況下室內(nèi)的流場分布以及污染物擴(kuò)散特性,以期對室內(nèi)相應(yīng)的氣流組織設(shè)計和基礎(chǔ)設(shè)備(家具、擋板)的布置提供可行的參考意見。
[Abstract]:With the improper use of a large number of building and decoration materials and air conditioning equipment in modern society, air quality problems in air-conditioned rooms have become one of the most important concerns in people's daily life. At the same time, air conditioning rooms are generally furnished or use baffles to partition the area, especially in the relatively densely populated office area, often using the baffle for internal partition. In the long run, there will be more and more harmful gas pollutants accumulated in the indoor environment, and the increasingly closed indoor environment will lead to the serious deterioration of indoor air quality. These factors, such as air supply mode, pollutant characteristics and internal zoning, will change the distribution of air flow in air conditioning room and the removal effect of pollutants, which has a great influence on indoor gas flow and pollutant distribution, so it is worth studying. At present, there are more studies on the first two aspects, but relatively few studies on the impact of indoor partitions on indoor air quality caused by baffles. Therefore, it is very necessary to study indoor partitions. The effect of air supply parameters and pollution source location on indoor air quality. According to the existing experimental conditions, the experimental scheme is designed in this paper. The velocity and temperature values of indoor measurement points under the two ventilation modes of top return and down return are obtained by the method of field measurement, and the experimental data are arranged. By means of CFD numerical simulation technology, the experimental model is numerically simulated by using FLUENT software, and the corresponding results are obtained by establishing the k- 蔚 two-equation turbulent model. Through the direct comparison between the experimental values and the simulated values, the method of comparing the experimental data with the experimental data in the literature and the symbolic test method are used to test the significance of the differences between the experimental values and the simulated values. Thus, the feasibility and reliability of the numerical simulation model in studying this kind of problems are well verified. On the premise of fully verifying the accuracy of mathematical model and numerical simulation, we extend the numerical simulation to study the distribution of air flow and the distribution and diffusion characteristics of pollutants under the condition of indoor zoning. The difference of indoor velocity field and pollutant concentration field is compared under different working conditions, such as different height baffle, different air supply form, different air velocity and different pollutant distribution. The optimal indoor air quality factors are obtained, and the indoor flow field distribution and pollutant diffusion characteristics under different working conditions are summarized, in order to design the indoor airflow organization and the basic equipment (furniture, etc.) The layout of the baffle provides a practical reference.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X51;TU834.31

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