本文選題：地下停車場 + 煙氣流動�。� 參考：《遼寧工程技術(shù)大學(xué)》2014年碩士論文

【摘要】：近年來,我國經(jīng)濟(jì)快速發(fā)展,人民生活日趨提高,汽車擁有量的快速增長,產(chǎn)生道路擁擠、事故多發(fā)、資源消耗、環(huán)境污染、自然災(zāi)害等多方面的問題。為解決城市發(fā)展與用地資源緊張之間的矛盾,建設(shè)地下停車場成為解決土地緊張、緩解停車難問題的主要方法之一。然而,與地上建筑相比,地下停車場具有封閉性,且污染物不易擴(kuò)散,若車庫內(nèi)通風(fēng)不良,容易引起油蒸汽積聚而產(chǎn)生爆炸引發(fā)火災(zāi),因此研究地下車庫火災(zāi)時(shí)期的煙氣流動的規(guī)律和溫度分布情況就顯得尤為必要。本文運(yùn)用CFD軟件對地下停車場火災(zāi)時(shí)期的氣流情況進(jìn)行了模擬分析。分析了不同排煙量和火源位置對地下停車場火災(zāi)時(shí)期的溫度分布和有害氣體分布的影響規(guī)律,得到地下車庫火災(zāi)煙氣溫度分布圖和有害氣體分布圖。模擬結(jié)果表明：增大排煙量可以使燃燒產(chǎn)生的高溫氣體快速擴(kuò)散,相對降低停車場整體溫度,改善車庫內(nèi)的能見度；采取機(jī)械排風(fēng)后明顯看到空間下層煙氣濃度高于上層；火源點(diǎn)位于空間中心位置時(shí)的火災(zāi)危害范圍最大。
[Abstract]:In recent years, our country's economy has developed rapidly, the people's life is increasing, and the car ownership is increasing rapidly. There are many problems, such as road congestion, accident multiple, resource consumption, environmental pollution, natural disaster and so on. In order to solve the spear between urban development and the shortage of land resources, the construction of underground parking is a solution to land tension and ease of parking. However, compared with the ground building, the underground parking lot is closed, and the pollutants are not easy to spread. If the ventilation in the garage is bad, it is easy to cause the accumulation of oil and steam to produce the fire. Therefore, it is particularly necessary to study the law and temperature distribution of the gas flow during the underground garage fire. In this paper, the CFD software is used to simulate the air flow in the underground parking lot during the fire period. The influence of the different smoke discharge and fire source position on the temperature distribution and the distribution of harmful gas during the fire period in the underground parking lot is analyzed. The gas temperature distribution map and the harmful gas distribution map of the underground garage fire are obtained. The simulation results show that the gas distribution and the distribution of harmful gases are obtained. The increase of exhaust smoke can quickly spread the high temperature gas produced by the combustion, reduce the overall temperature of the parking lot and improve the visibility in the garage. The smoke concentration in the lower layer of the space is obviously higher than that of the upper layer after the mechanical exhaust, and the fire danger range is the largest when the fire source is located in the space center.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU926;TU962

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