本文關(guān)鍵詞：分區(qū)域變尺度網(wǎng)格的社區(qū)火災(zāi)場(chǎng)景數(shù)值仿真　出處：《中國(guó)圖象圖形學(xué)報(bào)》2017年09期 　論文類型：期刊論文

  更多相關(guān)文章： 火災(zāi)場(chǎng)景仿真 室內(nèi)制圖 分區(qū)域變尺度網(wǎng)格 維建模 數(shù)值模擬

【摘要】：目的火災(zāi)場(chǎng)景數(shù)值仿真對(duì)消防救援和應(yīng)急疏散具有重要意義�；馂�(zāi)場(chǎng)景仿真需要對(duì)室內(nèi)外地物及環(huán)境進(jìn)行精細(xì)建模和大量數(shù)值計(jì)算,而傳統(tǒng)地圖和空間分析無(wú)法滿足日趨復(fù)雜的建筑物消防場(chǎng)景表達(dá)。為此本文基于室內(nèi)外地圖研究基礎(chǔ),構(gòu)建面向社區(qū)安全的火災(zāi)場(chǎng)景數(shù)值仿真模型。方法通過(guò)傳統(tǒng)制圖技術(shù)建立社區(qū)地物分布模型,利用室內(nèi)制圖技術(shù)建立建筑物內(nèi)部場(chǎng)景,利用3維建模技術(shù)重建社區(qū)室內(nèi)外3維模型,引入火災(zāi)數(shù)值模擬方程進(jìn)行仿真計(jì)算。根據(jù)社區(qū)建筑物分布和其內(nèi)部結(jié)構(gòu)復(fù)雜程度的差異,提出分區(qū)域變尺度的網(wǎng)格劃分方法,以提高計(jì)算效率。結(jié)果通過(guò)對(duì)紅樹(shù)灣社區(qū)進(jìn)行"精細(xì)"、"粗糙"和"分區(qū)域變尺度"3種不同方法的仿真實(shí)驗(yàn),分析火災(zāi)模型的計(jì)算速度、溫度場(chǎng)及煙氣擴(kuò)散情況。與精細(xì)網(wǎng)格方法相比,分區(qū)域變尺度方法和粗糙網(wǎng)格方法的計(jì)算速度是其8倍和24倍,煙氣最低能見(jiàn)度誤差為2 m和13.5 m,分區(qū)域變尺度方法相較于粗糙網(wǎng)格方法與精細(xì)網(wǎng)格方法的溫度變化曲線更加吻合。分區(qū)域變尺度方法的模擬精度更接近于精細(xì)網(wǎng)格方法,同時(shí)效率得到提升。結(jié)論本文提出的火災(zāi)場(chǎng)景仿真模型將室內(nèi)制圖應(yīng)用擴(kuò)展到社區(qū)消防研究,實(shí)驗(yàn)結(jié)果表明,所提出的分區(qū)域變尺度網(wǎng)格劃分方法能夠在保證數(shù)值模擬精度的前提下提高仿真效率,具有重要的應(yīng)用價(jià)值。
[Abstract]:Objective numerical simulation of fire scene is of great significance to fire rescue and emergency evacuation. Fire scene simulation needs detailed modeling and a large number of numerical calculations for indoor objects and environment. Traditional maps and spatial analysis can not meet the increasingly complex building fire scene representation. Therefore, this paper based on indoor and outdoor map research foundation. The numerical simulation model of fire scene for community safety was constructed. Methods the distribution model of community features was established by traditional cartographic technology and the interior scene of building was established by indoor mapping technology. Three-dimensional modeling technology is used to reconstruct the three-dimensional model in and out of the community, and the fire numerical simulation equation is introduced to carry out the simulation calculation. According to the difference of the distribution of community buildings and the complexity of their internal structure. In order to improve the computational efficiency, a meshing method with sub-area variable scale was proposed. Results the simulation experiments were carried out on three different methods of "fine", "rough" and "sub-regional variable scale" in the community of Redtree Bay. The computational speed, temperature field and smoke diffusion of the fire model are analyzed. Compared with the fine grid method, the computational speed of the zonal variable scale method and the rough grid method is 8 and 24 times higher than that of the fine grid method. The minimum visibility error of smoke is 2 m and 13.5 m. Compared with the rough grid method and the fine grid method, the temperature variation curve of the sub-region variable scale method is more consistent, and the simulation accuracy of the sub-region variable scale method is closer to that of the fine grid method. At the same time, the efficiency is improved. Conclusion the fire scene simulation model proposed in this paper extends the indoor drawing to the community fire fighting research, and the experimental results show that. The proposed method can improve the efficiency of numerical simulation on the premise of ensuring the accuracy of numerical simulation, and has important application value.
【作者單位】： 中國(guó)科學(xué)院遙感與數(shù)字地球研究所;中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家科技支撐計(jì)劃基金項(xiàng)目(2015BAJ02B03,2014BAL04B06)~~
【分類號(hào)】：TP391.9;TU998.1
【正文快照】： 0引言社區(qū)作為社會(huì)的基本單元,是城市中人類生活居住的重要場(chǎng)所,社區(qū)安全是和諧社會(huì)發(fā)展的一個(gè)重要組成部分。據(jù)統(tǒng)計(jì)中國(guó)每年有1 700人死于火災(zāi),1 500人于火災(zāi)中受傷,直接經(jīng)濟(jì)損失高達(dá)16億元[1]。大量事故表明,火災(zāi)燃燒釋放的有毒煙氣以及燃燒形成的高溫環(huán)境是影響火災(zāi)中人員

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張毅;王青松;黃新杰;王秋紅;孫金華;;火災(zāi)場(chǎng)景中玻璃破裂行為研究綜述[J];災(zāi)害學(xué);2010年S1期

2 李馳原;康青春;;基于情景應(yīng)對(duì)模式下的火災(zāi)場(chǎng)景推演系統(tǒng)[J];消防科學(xué)與技術(shù);2012年08期

3 朱杭;趙金城;;高層鋼框架在不同火災(zāi)場(chǎng)景下的整體響應(yīng)分析[J];鋼結(jié)構(gòu);2011年04期

4 方勇;;某辦公室火災(zāi)數(shù)值模擬研究[J];安徽建筑工業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);2011年03期

5 幺達(dá);;某影城性能化消防設(shè)計(jì)中火災(zāi)場(chǎng)景分析與確定[J];消防科學(xué)與技術(shù);2011年12期

6 曹居強(qiáng);;國(guó)家體育館性能化消防火災(zāi)場(chǎng)景設(shè)計(jì)介紹[J];安全;2008年12期

7 王厚華;劉希臣;;古建筑性能化防火設(shè)計(jì)中火災(zāi)場(chǎng)景的設(shè)置[J];重慶大學(xué)學(xué)報(bào);2009年09期

8 張建文;張嵐;;高校宿舍建筑火災(zāi)場(chǎng)景人員疏散模擬研究[J];安全與環(huán)境學(xué)報(bào);2010年04期

9 宋文華;劉子萌;王鵬;;公共聚集場(chǎng)所防火設(shè)計(jì)中的火災(zāi)場(chǎng)景設(shè)計(jì)研究[J];中國(guó)安全科學(xué)學(xué)報(bào);2008年11期

10 李雷;謝Y，

本文編號(hào)：1433424