机场顶棚表面太阳能热量吸收量模型仿真

Solar Heat Absorption Model Simulation of Airport Ceiling Surface

在对机场顶棚表面太阳能热量吸收量进行模拟仿真的过程中,容易出现日照变化随机的情况,导致传统方法由于不能充分分析太阳能变化造成的影响,无法有效实现机场顶棚表面太阳能热量吸收仿真,提出一种基于正态分布概率模型的机场顶棚太阳能热量吸收量模型,机场顶棚表面流体区域采用k-epsilon湍流模型,同时启动RNG,辐射部分采用FLUENT中的太阳加载模型,求出进入计算区域的太阳射线对辐射的影响,依据温度场控制方程,考虑到一天中太阳能辐射总量依据时间的概率分布,通过计算太阳能辐射量相对于该天太阳能辐射总量的比重以及机场顶棚表面太阳能热量吸收量,建立基于正态分布模型的机场顶棚表面太阳能热量吸收量模型。实验结果表明,所提方法与实际情况更加吻合,具有很高的准确性及有效性。

In the airport ceiling surface solar heat absorption in the process of simulation, it＇s easy to havea sunshine of random change, lead to the traditional methods unable to fully analyze the impact ofchanges in solar, unable to effectively implement the airport ceiling surface solar heat absorption of thesimulation, in this paper, a model based on normal distribution probability roof solar heat absorptionmodel of airport, the airport ceiling surface fluid area by using the k - epsilon turbulence model, at thesame time start the RNG, the sun radiation part adopts FLUENT load model, and the sun＇s rays enter thecalculation area of the influence of radiation, according to the temperature field control equation,considering the amount of solar radiation in a day on the basis of the probability distribution of time,through calculating the solar radiation is relative to the proportion of the total solar radiation and theairport that day ceiling surface solar heat absorption, based on normal distribution model of the roofsurface solar heat absorption model at the airport.The experimental results show that the proposedmethod in accordance with the actual situation more, has the very high accuracy and effectiveness.