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Validation of numerical modeling of conditions in an atrium space with a hybrid ventilation system

机译：混合通风系统验证中庭空间条件数值模型的有效性

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Quite extensive measurements undertaken in a three-story atrium space (floors 14th-16th) with a hybrid solar-assisted natural ventilation system in the Engineering building of the Concordia University, Montreal, Canada have recently become available. The thermal conditions of the atrium space have been studied numerically using the Reynolds Averaged Navier-Stokes (RANS) modeling approach. The RANS turbulence models that were tested include the standard k-e, RNG k-e, 'realizable' k-e, and SST k-ω turbulence models. The radiation exchange between the surfaces of the atrium space was considered using the Discrete Transfer Radiation Model (DTRM). The resultant steady state governing equations were solved using a commercial CFD solver FLUENT. Numerical results were obtained for the conditions existing when measurements were taken in the Concordia atrium on typical clear days with the blinds fully open or fully closed and with the natural ventilation system (NV) ON or OFF. The CFD model predictions were validated by the comparison against the experimental measurements available and it was found that the numerical predictions implying CFD model agree well with the measurements.
机译：最近在加拿大蒙特利尔康考迪亚大学工程大楼的三层中庭空间（第14至16楼）采用混合太阳能辅助自然通风系统进行了广泛的测量。已经使用雷诺平均纳维-斯托克斯（RANS）建模方法对中庭空间的热条件进行了数值研究。经过测试的RANS湍流模型包括标准k-e，RNG k-e，“可实现的” k-e和SSTk-ω湍流模型。使用离散转移辐射模型（DTRM）考虑了中庭空间表面之间的辐射交换。使用商用CFD求解器FLUENT求解生成的稳态控制方程。在百叶窗完全打开或完全关闭以及自然通风系统（NV）开启或关闭的情况下，在典型的晴天，在协和花园中庭进行测量时，存在的条件得到了数值结果。通过与可用的实验测量值进行比较，对CFD模型的预测进行了验证，发现表明CFD模型的数值预测与测量结果吻合良好。

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