西安建筑科技大学学报(自然科学版)

曲面型建筑在我国及世界上源远流长,这些曲面造型融合了建筑师的灵感与其环境、功能、结构等因素.曲面形状以多种形体构成,本文以最速降线曲面为例,探究基于曲面贴附送风模式气流组织形式的适用性.通过CFD数值模拟和理论分析相结合的方式,研究了最速降线曲面贴附送风形式在不同曲率、送风速度和温度下室内的速度场和温度场分布.研究表明,贴附送风可以适用于最速降线曲面,且是一种通风效率较高、工作区人员热舒适性较好的气流组织形式,可以推广到圆形、椭圆形和抛物线形等多种形状.

The curved building in our country and the world has a long history, and these curved surfaces blend the architect's inspiration with its environment, function, and structure, and other factors. The shape of the curved surface is made up of various shapes in this paper,and the brachistochrone curved wall was used as an example to explore the applicability of the air distribution of attached air curtain ventilation. By combining CFD numerical simulation and theoretical analysis method, the velocity field and temperature field distribution in the room with different surface curvature, air supply velocity and temperature were studied. Results show that the attached air curtain ventilation mode can be applied to brachistochrone curved wall, and it can create a comfortable environment in the occupied zone with high ventilation efficiency. Therefore, the attached air curtain ventilation mode can be applied to the space of the building with circular, elliptical, parabola and other building planar shape.

引言
1 数值计算模型建立和参数设定
2 数值模拟结果分析
3 结论

图1 曲面贴附送风原理示意图<br/>Fig.1 Theory of curved wall attached air ventilation

图1 曲面贴附送风原理示意图
Fig.1 Theory of curved wall attached air ventilation

表1 几种曲面的计算参数<br/>Tab.1 Calculation parameters of several surfaces

表1 几种曲面的计算参数
Tab.1 Calculation parameters of several surfaces

图2 不同网格轴线速度分布比较<br/>Fig.2 Comparison of different mesh axis velocity

图2 不同网格轴线速度分布比较
Fig.2 Comparison of different mesh axis velocity

表2 4种湍流模型的竖向和水平向轴线速度对比<br/>Tab.2 Vertical and horizontal axis velocity comparison of four turbulence models

表2 4种湍流模型的竖向和水平向轴线速度对比
Tab.2 Vertical and horizontal axis velocity comparison of four turbulence models

表3 数值模拟边界条件和初始条件参数设置<br/>Tab.3 Numerical simulation boundary and initial conditions parameter settings

表3 数值模拟边界条件和初始条件参数设置
Tab.3 Numerical simulation boundary and initial conditions parameter settings

图3 不同工况下曲面空间流场对比<br/>Fig.3 Comparison of curved wall space flow field under different conditions

图3 不同工况下曲面空间流场对比
Fig.3 Comparison of curved wall space flow field under different conditions

图4 同工况设置下无因次轴线速度对比(y*=h-y)<br/>Fig.4 Comparison of dimensionless axis velocity under the same condition:(y*=h-y)

图4 同工况设置下无因次轴线速度对比(y*=h-y)
Fig.4 Comparison of dimensionless axis velocity under the same condition:(y*=h-y)

图5 曲面2不同工况下最速降线曲面空间温度场对比<br/>Fig.5 Comparison of brachistochrone curved wall space temperature field under different conditions of surface 2

图5 曲面2不同工况下最速降线曲面空间温度场对比
Fig.5 Comparison of brachistochrone curved wall space temperature field under different conditions of surface 2

图6 曲面2不同工况设置下水平向贴附区剩余温度对比<br/>Fig.6 Comparison of residual temperaturein horizontal attachment area under different conditions of surface 2

图6 曲面2不同工况设置下水平向贴附区剩余温度对比
Fig.6 Comparison of residual temperaturein horizontal attachment area under different conditions of surface 2

图7 几种曲线在相同高度(y=2.6 m)下的横截面形状<br/>Fig.7 Cross-section shapes of several curves at the same height(y=2.6 m)

图7 几种曲线在相同高度(y=2.6 m)下的横截面形状
Fig.7 Cross-section shapes of several curves at the same height(y=2.6 m)

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备注

引言

1 数值计算模型建立和参数设定

2 数值模拟结果分析

3 结论

期刊信息