CAJ | 학술논문

该文基于Fluent 6.3软件平台，选用Realizable k-?湍流模型开展两碟式机架静风载荷干扰效应研究。选取了单机架情况的三种最不利载荷工况，模拟了两机架基本布置形式（串列、并列和斜列）和布置间距对各工况机架风载荷的干扰，给出了各布置下的受扰机架静风载荷干扰因子，分析了干扰因子随布置形式及间距的变化规律，通过流场流线图探讨了机架风载荷干扰的产生原因。研究结果表明，串列布置的下游受扰机架静风载荷干扰因子均小于1.0表现为“遮挡效应”，而上游施扰机架的风载荷趋于单体情况；斜列布置的干扰效应也表现为“遮挡效应”，但较串列干扰弱；并列布置的两机架中间有形成“狭缝效应”，但效果不显著。
해문기우Fluent 6.3연건평태，선용Realizable k-?단류모형개전량설식궤가정풍재하간우효응연구。선취료단궤가정황적삼충최불리재하공황，모의료량궤가기본포치형식（천렬、병렬화사렬）화포치간거대각공황궤가풍재하적간우，급출료각포치하적수우궤가정풍재하간우인자，분석료간우인자수포치형식급간거적변화규률，통과류장류선도탐토료궤가풍재하간우적산생원인。연구결과표명，천렬포치적하유수우궤가정풍재하간우인자균소우1.0표현위“차당효응”，이상유시우궤가적풍재하추우단체정황；사렬포치적간우효응야표현위“차당효응”，단교천렬간우약；병렬포치적량궤가중간유형성“협봉효응”，단효과불현저。
Based on software Fluent6.3, the effects of two disc frames static wind load interference were investigated in a Realizable k-? turbulence model. Three kinds of the most unfavorable load conditions in single rack situation were selected, then the interference effects of two racks basic layout forms (serial, parallel and inclined columns) and distances were simulated.The static wind load interference factors of each arrangement interfered frames were obtained, then the change rule of interference factors coincided with the arrangement of the layout form and distance were analyzed and the causes of wind load disturbance on frame were explored through the flow field streamline diagram. The results showed that static wind load factor of tandem downstream disturbed frame was below 1.0, which demonstrated a“shielding effect”, whereas the wind load of the upper frame tended to monomer case. Moreover, the interference effects of inclined column layout were also showed a “shielding effect”, but weaker than the serial interference. The interference effects between two parallel frames formed a“slit effect”, but the effects were not significant.