欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
基于Fluent软件平台，选用基于Reynolds平均法的RNG κ-ε湍流模型，对低矮带檐口的曲面双坡屋面房屋周围风场和表面风压开展数值模拟，研究了屋面坡度、房屋高度、跨度、长度和房屋檐口类型等各种参数对曲面双坡屋面风压系数的影响．研究表明，曲面双坡屋面风压受房屋几何尺寸影响不明显，而受屋面坡度、房屋檐口类型影响明显，且与来风风向角密切相关．屋面风压随房屋高跨比的增大而增大；随屋面坡度增大，迎风面风压绝对值减小，而背风面则增大．竖向和水平檐口显著影响曲坡屋面的风压大小和分布．
英文摘要：
A renormalization group κ-ε model based on the Reynolds Averaged Navier-Stokes Equations （RANS） turbulence model is added in software Fluent to numerically simulate wind pressure distribution and the wind flow field around a concave low-rise building with eaves. A detailed parametric study is performed for average wind pressure coefficients of low-rise building with eaves. The parameters include roof pitch, wall height, wall width, wall length and cornices forms. The numerical results show that the wind pressure over roof is not affected by the geometry dimensioning of building significantly. Wind attack angle, roof pitch and cornices forms affect both the magnitude and distribution of wind pressure over gable roof. Wind pressures over the roof increase with the increasing of height-width ratio, where wind pressures over windward roof decrease while those over leeward roof increase with the increasing of roof pitch. Furthermore, both vertical and horizontal cornices change greatly the wind pressure distribution around the roof.
同期刊论文项目
同项目期刊论文
Partitioned subiterative coupling schemes for aeroelasticity using combined interface boundary condi
Flow interference between a stationary cylinder and an elastically mounted cylinder arranged in prox
Numerical prediction of aerodynamic characteristics of prismatic cylinder by finite element method w
A semi-implicit three-step method based on SUPG finite element formulation for flow in lid driven ca
Stabilized finite element technique and its application for turbulent flow with high Reynolds number
LAMINAR FLOW PATTERNS AROUND THREE SIDE-BY-SIDE ARRANGED CIRCULAR CYLINDERS USING SEMI-IMPLICIT THRE
Flow characteristics and flow-induced forces of a stationary and rotating triangular cylinder with d
Two-degree-of-freedom ?ow-induced vibrations on isolated and tandem cylinders with varying natural f
期刊信息
位置：