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

【摘要】：風(fēng)荷載是實(shí)際工程中重要的設(shè)計(jì)荷載,特別是具有藝術(shù)性的構(gòu)、建筑物,它們的共同特點(diǎn)是體型龐大、結(jié)構(gòu)特殊,且通常無法應(yīng)用《建筑結(jié)構(gòu)荷載規(guī)范》來確定其相應(yīng)的體型系數(shù)和表面風(fēng)壓分布,同時(shí)由于結(jié)構(gòu)表面風(fēng)壓分布很容易受到風(fēng)向、地貌及周圍環(huán)境的影響等條件的限制,不便通過風(fēng)洞試驗(yàn)來進(jìn)行研究,此時(shí)通過數(shù)值模擬的方法來確定這些體型復(fù)雜的建筑結(jié)構(gòu)的風(fēng)壓分布和風(fēng)場(chǎng)特性具有重要的工程和現(xiàn)實(shí)意義。本文采用Fluent軟件對(duì)大型白鶴雕塑的風(fēng)場(chǎng)和風(fēng)壓分布進(jìn)行了數(shù)值模擬分析,主要的工作有以下幾個(gè)方面:(1)介紹了數(shù)值模擬的相關(guān)概念和模擬風(fēng)場(chǎng)的各類湍流模型,并對(duì)湍流模型進(jìn)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(biāo)準(zhǔn)低矮建筑實(shí)尺模型)來對(duì)影響數(shù)值模擬的一些因素進(jìn)行研究,通過對(duì)比不同情況下的分析結(jié)果,為白鶴雕塑數(shù)值模擬計(jì)算參數(shù)的設(shè)置提供依據(jù)。(3)通過對(duì)5種風(fēng)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(fēng)場(chǎng)和風(fēng)壓系數(shù)的分布特性,并描述了雕塑截面突變處風(fēng)場(chǎng)的復(fù)雜性以及風(fēng)向角的變化對(duì)雕塑表面風(fēng)壓系數(shù)的影響。(4)給出5種風(fēng)向角工況下的白鶴雕塑各個(gè)截面的風(fēng)荷載體形系數(shù)圖,為實(shí)際工程中風(fēng)荷載的計(jì)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(xué)位授予單位】：南昌大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU312.1

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相關(guān)期刊論文 前2條

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本文編號(hào)：1613115