本文選題：數(shù)值模擬　切入點：白鶴雕塑　出處：《南昌大學》2015年碩士論文　論文類型：學位論文

【摘要】：風荷載是實際工程中重要的設計荷載,特別是具有藝術(shù)性的構(gòu)、建筑物,它們的共同特點是體型龐大、結(jié)構(gòu)特殊,且通常無法應用《建筑結(jié)構(gòu)荷載規(guī)范》來確定其相應的體型系數(shù)和表面風壓分布,同時由于結(jié)構(gòu)表面風壓分布很容易受到風向、地貌及周圍環(huán)境的影響等條件的限制,不便通過風洞試驗來進行研究,此時通過數(shù)值模擬的方法來確定這些體型復雜的建筑結(jié)構(gòu)的風壓分布和風場特性具有重要的工程和現(xiàn)實意義。本文采用Fluent軟件對大型白鶴雕塑的風場和風壓分布進行了數(shù)值模擬分析,主要的工作有以下幾個方面:(1)介紹了數(shù)值模擬的相關(guān)概念和模擬風場的各類湍流模型,并對湍流模型進行了分析比較,概括了數(shù)值模擬過程中的影響因素。(2)選用TTU模型(標準低矮建筑實尺模型)來對影響數(shù)值模擬的一些因素進行研究,通過對比不同情況下的分析結(jié)果,為白鶴雕塑數(shù)值模擬計算參數(shù)的設置提供依據(jù)。(3)通過對5種風向角工況下的白鶴雕塑繞流結(jié)構(gòu)的數(shù)值模擬,分析和研究了風場和風壓系數(shù)的分布特性,并描述了雕塑截面突變處風場的復雜性以及風向角的變化對雕塑表面風壓系數(shù)的影響。(4)給出5種風向角工況下的白鶴雕塑各個截面的風荷載體形系數(shù)圖,為實際工程中風荷載的計算提供參考。
[Abstract]:Wind load is an important design load in practical engineering, especially the structure and building with artistic character. Their common characteristics are large size and special structure. And it is usually impossible to use the Building structure load Code to determine the corresponding shape coefficient and surface wind pressure distribution. At the same time, because the wind pressure distribution on the surface of the structure is easily restricted by wind direction, geomorphology and surrounding environment, etc. It's not easy to do research through wind tunnel tests, At this time, it is of great engineering and practical significance to determine the wind pressure distribution and wind field characteristics of these complex building structures by numerical simulation. In this paper, the wind field and wind pressure distribution of large white crane sculptures are studied by Fluent software. Numerical simulation analysis was carried out. The main work is as follows: (1) the related concepts of numerical simulation and various turbulence models for wind field simulation are introduced, and the turbulence models are analyzed and compared. In this paper, the influencing factors in the process of numerical simulation are summarized. The TTU model (real scale model of standard low building) is used to study some factors that affect the numerical simulation, and the results of analysis under different conditions are compared. This paper provides a basis for setting the parameters of the numerical simulation of the white crane sculpture. Through the numerical simulation of the flow structure of the white crane sculpture under five wind direction angle conditions, the distribution characteristics of the wind field and the wind pressure coefficient are analyzed and studied. The complexity of wind field and the influence of wind direction angle on wind pressure coefficient of sculpture surface are described. It provides a reference for the calculation of stroke load in practical engineering.
【學位授予單位】：南昌大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU312.1

【參考文獻】

相關(guān)期刊論文 前2條

1 王輝,陳水福,唐錦春;低層房屋風壓分布特性的模擬與分析[J];計算力學學報;2004年03期

2 蘇銘德，，唐革風;高層建筑風載的數(shù)值模擬[J];空氣動力學學報;1996年04期

本文編號：1613115