EFFECT OF AIRFLOW DRIVING METHOD ON PROBABILISTIC CHARACTERISTICS OF WIND VELOCITY COMPONENTS IN COMPUTATIONAL FLUID DYNAMICS USING PERIODIC BOUNDARY CONDITION AROUND SIMPLIFIED URBAN CANOPY

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  • 単純都市キャノピーを対象とした周期境界条件を用いた数値流体解析における流れの駆動方法による速度確率性状への影響

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<p>Wind environment at a pedestrian level has been evaluated based on probability density functions and percentile wind speeds. The purpose of this paper is to clarify the effect of the driving force on the probabilistic cha racteristics of the airflow around a simplified urban like array using large eddy simulation. The vertical profiles of skewness and kurtosis as well as probabilistic density functions of velocity compon ents are clearly affected by the driving method above the roughness sublayer. In contrast, they showed similar trends regardless of the driving force in the roughness sublayer, although subtle local differences in the probability density functions are observed.</p>

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