發(fā)布時(shí)間：2018-11-14 18:41

【摘要】：采用計(jì)算流體動(dòng)力學(xué)方法結(jié)合地形數(shù)字模型建立了橋位地形風(fēng)特性數(shù)值模擬方法,針對單峰山丘分別采用RNGk-ε和SSTk-ω兩種湍流模型進(jìn)行數(shù)值模擬,然后以某擬建大橋?yàn)楸尘安捎肦NGk-ε湍流模型進(jìn)行橋位地形風(fēng)場數(shù)值模擬。研究表明,采用RNGk-ε和SSTk-ω模型進(jìn)行單峰山丘風(fēng)場計(jì)算結(jié)果較為接近;實(shí)際地形橋位風(fēng)場特性計(jì)算結(jié)果與現(xiàn)場實(shí)測值相近,計(jì)算精度滿足工程需要。
[Abstract]:A numerical simulation method for topographic wind characteristics of bridge is established by means of computational fluid dynamics (CFD) and topographic digital model. The RNGk- 蔚 and SSTk- 蠅 turbulence models are used to simulate the single peak hill respectively. Then the RNGk- 蔚 turbulence model is used to simulate the topographic wind field of a proposed bridge. The results show that the RNGk- 蔚 and SSTk- 蠅 models are used to calculate the wind field of a single peak hill, and the calculated results of wind field characteristics of the actual topographic bridge are close to those of the field measurements, and the accuracy of the calculation meets the needs of engineering.
【作者單位】： 湖南大學(xué)風(fēng)工程與橋梁工程湖南省重點(diǎn)實(shí)驗(yàn)室;甘肅省交通規(guī)劃勘察設(shè)計(jì)院有限責(zé)任公司;
【基金】：國家自然科學(xué)基金資助項(xiàng)目,項(xiàng)目編號(hào)51478180
【分類號(hào)】：U442.5;O35
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本文編號(hào)：2331982