本文選題：數(shù)值模擬 + CFD�。� 參考：《重慶大學(xué)》2013年碩士論文

【摘要】：目前，CFD（Computational Fluid Dynamics）技術(shù)已成為研究建筑室內(nèi)環(huán)境的主要方法之一。然而，針對(duì)室內(nèi)污染物擴(kuò)散模擬專用軟件相對(duì)較少，而已有較成熟的CFD商業(yè)軟件不但價(jià)格昂貴，，而且要求使用者具有較強(qiáng)的專業(yè)知識(shí)和理論基礎(chǔ)，因此，開發(fā)完善一套具有低成本、易推廣、速度快的CFD可視化模擬軟件具有較高的科研價(jià)值。 首先本文從室內(nèi)污染物的擴(kuò)散模型以及關(guān)鍵參數(shù)入手，分析了流體流動(dòng)和傳熱基本控制方程，確定了核心計(jì)算程序的控制方程離散和求解方法；運(yùn)用CompaqVisual Fortran6.6和VB.NET進(jìn)行混合編程，改進(jìn)了建筑室內(nèi)熱環(huán)境仿真軟件Indoor Thermal Environment Simulation1.0（簡(jiǎn)稱ITES1.0），開發(fā)了具有模擬室內(nèi)污染物濃度分布功能的ITES2.0；并以重慶市某辦公建筑為實(shí)例，采用現(xiàn)場(chǎng)實(shí)測(cè)和問(wèn)卷調(diào)查相結(jié)合的方法，驗(yàn)證了ITES2.0的可信性，主要研究成果如下： ①對(duì)ITES1.0核心程序源代碼進(jìn)行了改進(jìn)，引入了用于模擬甲醛和CO2的組分方程模型，開發(fā)了具有模擬室內(nèi)污染物濃度分布功能的仿真軟件ITES2.0。 ②改進(jìn)ITES1.0的前處理，實(shí)現(xiàn)了設(shè)置面板多級(jí)撤銷、模型多維度旋轉(zhuǎn)等操作，提供了能編輯污染物物性參數(shù)的設(shè)置面板，添加了簡(jiǎn)單明了的工具欄快捷命令按鈕，提供了能快速掌握ITES2.0的幫助文檔。 ③根據(jù)CFD數(shù)值模擬后處理可視化軟件TECPLOT360的無(wú)結(jié)構(gòu)數(shù)據(jù)格式，編寫代碼輸出數(shù)值模擬結(jié)果，最終實(shí)現(xiàn)對(duì)建筑室內(nèi)熱環(huán)境的仿真軟件ITES2.0整體優(yōu)化過(guò)程。 ④通過(guò)實(shí)例測(cè)試了重慶市某辦公建筑室內(nèi)甲醛、CO2、溫度、相對(duì)濕度、氣流速度以及問(wèn)卷調(diào)查了室內(nèi)人員的主觀感受。從主觀和客觀上對(duì)ITES2.0進(jìn)行可信性驗(yàn)證，結(jié)果表明：模擬值和實(shí)測(cè)平均值不存在顯著差異，即模擬值和實(shí)測(cè)值的趨勢(shì)較為一致；將已驗(yàn)證的模擬值進(jìn)行灰色關(guān)聯(lián)分析評(píng)價(jià)室內(nèi)空氣品質(zhì)的等級(jí)，結(jié)果表明：灰色評(píng)價(jià)等級(jí)與主觀問(wèn)卷調(diào)查結(jié)果相吻合，驗(yàn)證了數(shù)值模擬結(jié)果與主觀問(wèn)卷調(diào)查結(jié)果的一致性。
[Abstract]:At present, the technology of Computational Fluid Dynamics has become one of the main methods to study the indoor environment of buildings.However, there are relatively few special software for indoor pollutant diffusion simulation, and mature CFD commercial software is not only expensive, but also requires users to have strong professional knowledge and theoretical basis.Developing and perfecting a set of CFD visual simulation software with low cost, easy popularization and fast speed has high scientific research value.In this paper, the basic governing equations of fluid flow and heat transfer are analyzed, and the discretization and solution method of the control equations of the core calculation program are determined, and the mixed programming with CompaqVisual Fortran6.6 and VB.NET is carried out, which is based on the indoor pollutant diffusion model and the key parameters.The thermal environment simulation software Indoor Thermal Environment simulation 1.0 (ITES1.0 for short) is improved to develop ITES2.0 with the function of simulating the concentration distribution of indoor pollutants, and taking an office building in Chongqing as an example, the method of field measurement and questionnaire survey is adopted.The credibility of ITES2.0 is verified, and the main research results are as follows:1. The source code of ITES1.0 core program is improved, the component equation model for simulating formaldehyde and CO2 is introduced, and the simulation software ITES2.0 is developed, which can simulate the distribution of indoor pollutant concentration.(2) improve the pre-processing of ITES1.0, realize the operation of setting panel multi-level undo and model multi-dimension rotation, provide the setting panel that can edit the physical property parameters of pollutants, add simple and clear toolbar shortcut command button, etc.Provides help documentation to quickly master ITES2.0.3According to the unstructured data format of TECPLOT360, a post-processing visualization software for CFD numerical simulation, the code is compiled to output the numerical simulation results. Finally, the whole optimization process of the simulation software ITES2.0 for indoor thermal environment is realized.(4) the indoor formaldehyde CO2, temperature, relative humidity, airflow velocity and the subjective feelings of the indoor personnel were tested through an example of an office building in Chongqing.The credibility of ITES2.0 is verified subjectively and objectively. The results show that there is no significant difference between the simulated value and the measured average value, that is, the trend between the simulated value and the measured value is consistent.The grade of indoor air quality is evaluated by grey correlation analysis. The results show that the grey evaluation grade is consistent with the subjective questionnaire results, and the consistency between the numerical simulation results and the subjective questionnaire results is verified.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU834

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