本文選題：室內(nèi)空間 + 概念模型��； 參考：《南京師范大學(xué)》2015年碩士論文

【摘要】：室內(nèi)空間是現(xiàn)代人工作生活的重要場(chǎng)所,室內(nèi)空氣質(zhì)量問(wèn)題已得到廣泛關(guān)注。污染物數(shù)值模擬是研究室內(nèi)空氣質(zhì)量的重要技術(shù)方法,已經(jīng)成為研究室內(nèi)污染物運(yùn)移擴(kuò)散機(jī)制的有效手段,但目前對(duì)室內(nèi)污染物的模擬仍然存在一些不足,在室內(nèi)空間模型描述方面,無(wú)法高效地提取模擬空間的幾何信息、空間結(jié)構(gòu)信息和屬性信息；在模擬過(guò)程中,模型的邊界條件一成不變,無(wú)法實(shí)現(xiàn)動(dòng)態(tài)條件下的模型模擬；在模擬數(shù)據(jù)可視化表達(dá)方面,無(wú)法很好地將模擬結(jié)果形象直觀的展現(xiàn)出來(lái)。本文針對(duì)上述的室內(nèi)污染物數(shù)值模擬過(guò)程中存在的問(wèn)題,開(kāi)展了基于動(dòng)態(tài)條件的室內(nèi)污染物擴(kuò)散模擬仿真研究,取得的成果如下：(1)針對(duì)室內(nèi)尺度的空氣質(zhì)量模擬需求,構(gòu)建室內(nèi)空間幾何特征、結(jié)構(gòu)特征與屬性信息耦合的模型模擬概念模型。借鑒CityGML空間模型與建筑物模型的思想,描述概念模型的幾何信息、空間結(jié)構(gòu)信息,通過(guò)建立屬性信息映射機(jī)制,將室內(nèi)空間屬性信息與模型邊界條件相關(guān)聯(lián),并給出概念模型屬性數(shù)據(jù)的組織方式。(2)在模型模擬過(guò)程中,針對(duì)邊界條件的改變,結(jié)合室內(nèi)空間概念模型與模擬參數(shù)映射方案,實(shí)現(xiàn)基于動(dòng)態(tài)條件的污染物擴(kuò)散模擬。以概念模型構(gòu)建的三維空間為模型模擬求解空間,設(shè)計(jì)實(shí)現(xiàn)了規(guī)則六面體網(wǎng)格的空間離散與模型模擬數(shù)據(jù)組織,基于計(jì)算流體力學(xué)(CFD)類庫(kù)OpenFOAM設(shè)定模型模擬數(shù)值化方案與求解控制方案,并結(jié)合PISO算法構(gòu)建自定義模型求解器,實(shí)現(xiàn)邊界條件動(dòng)態(tài)變化的污染物模型模擬。(3)針對(duì)模型模擬可視化與模擬數(shù)據(jù)綜合分析的需求,構(gòu)建室內(nèi)空間仿真模擬系統(tǒng),實(shí)現(xiàn)污染物的動(dòng)態(tài)仿真模擬。以三維建筑物室內(nèi)污染物模型模擬過(guò)程數(shù)據(jù)與結(jié)果數(shù)據(jù)為數(shù)據(jù)源,采用體繪制技術(shù),實(shí)現(xiàn)污染物濃度場(chǎng)的可視化表達(dá),并將污染物遷移擴(kuò)散機(jī)理模型與GIS集成,構(gòu)建仿真模擬系統(tǒng),實(shí)現(xiàn)室內(nèi)污染物擴(kuò)散的仿真模擬,充分發(fā)揮GIS應(yīng)用分析與空間數(shù)據(jù)場(chǎng)可視化的優(yōu)勢(shì)。
[Abstract]:Indoor space is an important place for modern people's work and life. The problem of indoor air quality has been widely concerned. The numerical simulation of pollutants is an important technical method to study indoor air quality. It has become an effective means to study the transport and diffusion mechanism of indoor pollutants. However, there are still some shortcomings in the simulation of indoor pollutants. In the description of the interior space model, the geometric information of the simulated space, the spatial structure information and the attribute information can not be efficiently extracted. In the process of simulation, the boundary condition of the model is unchangeable, and the model simulation can not be realized under the dynamic condition. In view of the problems existing in the numerical simulation of indoor pollutants, the simulation research of indoor pollutant diffusion based on dynamic conditions is carried out. The achievements are as follows: (1) the model of indoor space geometric features and the coupling of structural features and attribute information is constructed for indoor air quality simulation requirements. With the idea of CityGML space model and building model, we describe the geometric information of the conceptual model and the spatial structure information. By establishing the attribute information mapping mechanism, the interior spatial attribute information is associated with the model boundary conditions, and the organization mode of the conceptual model is given. (2) in the model simulation process, In view of the change of boundary conditions, the simulation of pollutant diffusion based on dynamic conditions is realized by combining the interior space concept model and the simulation parameter mapping scheme. The three-dimensional space of the conceptual model is simulated to solve the space, and the spatial dispersion and model simulation data organization of the regular hexahedral grid are designed and realized, based on the calculation of the fluid force. CFD class library OpenFOAM set model simulation numerical scheme and solution control scheme, and build a custom model solver with PISO algorithm to realize the pollutant model simulation of dynamic change of boundary conditions. (3) in view of the requirement of model simulation visualization and simulation data comprehensive analysis, the indoor space simulation system is constructed to realize pollution. The dynamic simulation of the object is used to simulate the process data and the result data of the three-dimensional building indoor pollutant model, and the volume rendering technology is used to realize the visualization of the pollutant concentration field. The simulation system is built to simulate the indoor pollutant diffusion, and the simulation simulation system of indoor pollutant diffusion is realized. We should give full play to the advantages of GIS application analysis and spatial data field visualization.
【學(xué)位授予單位】：南京師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X51

【參考文獻(xiàn)】

相關(guān)期刊論文 前2條

1 趙國(guó)智;孔凡讓;占驚春;張志偉;柴華;;基于SIMPLE算法的湍流場(chǎng)數(shù)值模擬[J];水電能源科學(xué);2007年03期

2 劉兆宏;王科;豐江帆;夏英;;矢量室內(nèi)地圖建模與制作方法[J];數(shù)字通信;2012年04期

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本文編號(hào)：1929671