- 摘 要
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（湖南科技大學(xué)土木工程學(xué)院， 湘潭 411201）
［摘要］基于ANSYS軟件，采用Realizable k-ε，RNG k-ε和SST k-ω三種湍流模型對體型比為1.5∶1∶1低矮房屋模型迎風(fēng)面、邊緣及屋面的表面風(fēng)壓分布及變化規(guī)律進(jìn)行數(shù)值模擬研究，數(shù)值模擬結(jié)果與同體型比的實(shí)測房屋及風(fēng)洞試驗(yàn)結(jié)果對比表明，數(shù)值模擬結(jié)果與實(shí)測及風(fēng)洞試驗(yàn)結(jié)論基本吻合，驗(yàn)證了三種湍流模型研究低矮房屋表面風(fēng)壓的可靠性，并對三種結(jié)果進(jìn)行分析，研究結(jié)果能為國內(nèi)低矮房屋設(shè)計(jì)提供有價(jià)值的參考。
［關(guān)鍵詞］低矮房屋; 風(fēng)壓系數(shù); 數(shù)值模擬; 實(shí)測
中圖分類號(hào)：TU312+.1 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2014)10-0084-05
Numerical simulation, field measurements and wind tunnel of mean wind pressures on the low-rise building surface
Wang Xiangjun, Dai Yimin, Yan Xuguang, Liu Ye
(College of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China)
Abstract: Based on ANSYS software, the wind pressure on a model building at a geometric scale of 1.5∶1∶1 was computed with fluent models of Realizable k-ε, RNG k-ε and SST k-ω. The distribution and change law of mean wind pressures of the windward side, eaves and roof of the building were summarized. Based on the analysis of the differences between wind tunnel test, field measurements and numerical results, it is found that the results of numerical simulation agree well with wind tunnel test and field measurements. The reliability of three turbulent models was proved, and similarities and differences were analyzed. It is expected that the study results should be valuable for wind-resistance design of low-rise buildings.
Keywords: low-rise building; wind pressure coefficient; numerical simulation; field measurement
*交通運(yùn)輸部科技項(xiàng)目（2011318824140），國家自然科學(xué)基金項(xiàng)目（51248001），湖南科技大學(xué)項(xiàng)目（J11216）。
作者簡介：王相軍，碩士，Email: wangxiangjun_nan@126.com。
參考文獻(xiàn)
［1］HOXCY P, RICHARDS R P, SHORT L J. Wind pressures on a 6m cube ［J］. Journal of Wind Engineering and Industrial Aerodynamics, 2001, 89:1553-1564.
［2］HARGREAVES D M, WRIGHT N G. On the use of the k-ε model in commercial CFD software to model the neutral atmospheric boundary layer ［J］. Journal of Wind Engineering and Industrial Aerodynamics, 2007, 95: 355-369.
［3］金新陽，楊偉，金海，等.數(shù)值風(fēng)工程應(yīng)用中湍流模型的比較研究［J］．建筑科學(xué),2006,22(5):1-5．
［4］馬劍，程國標(biāo)，毛亞郎. 基于CFD技術(shù)的群體建筑風(fēng)環(huán)境研究［J］．浙江大學(xué)學(xué)報(bào):自然科學(xué)版,2007, 35(3):351-354．
［5］顧明，楊偉，黃鵬. TTU標(biāo)模風(fēng)壓數(shù)值模擬及試驗(yàn)對比［J］.同濟(jì)大學(xué)學(xué)報(bào)：自然科學(xué)版,2006,32(12):1263-1567.
［6］周緒紅，聶少峰，周天華，等. 低層雙坡屋面建筑三維定常風(fēng)場的數(shù)值模擬［J］. 工程力學(xué)，2010,27（3）：19-29.
［7］DAVENPORT A G. The relationship of wind structure to wind loading［C］//Proceedings of the symposium on wind effect building and structures. Great Britain:National Physics Laboratory, 1965:54-102.
［8］戴益民，李正農(nóng)，李秋勝，等. 低矮房屋的風(fēng)載特性——近地風(fēng)剖面變化規(guī)律的研究［J］.土木工程學(xué)報(bào),2009,42（3）:42-48.
［9］戴益民.低矮房屋風(fēng)載特征的實(shí)測及風(fēng)洞試驗(yàn)研究［D］.長沙:湖南大學(xué),2010.
［10］王福軍.計(jì)算流體動(dòng)力學(xué)分析——CFD軟件原理與應(yīng)用［M］. 北京：清華大學(xué)出版社,2004.
［11］彭興黔, 劉春艷, 徐剛. 低矮建筑屋面風(fēng)荷載體型系數(shù)的數(shù)值模擬［J］.華僑大學(xué)學(xué)報(bào)：自然科學(xué)版，2011,32(5):579-583.
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