CAJ | 학술논문

为分析泵站进水池中构筑物布置对水流的影响,采用CFD技术模拟计算了进水池中不同构筑物布置形式的水体流动状态.计算结果表明:在进水管两侧设置水泵梁,对进水池流态及喇叭口出口水力性能基本无影响;进水侧水泵梁改为检修平台,平台下方出现横轴漩涡,喇叭口出口水力性能略有降低;进水管后侧设置检修平台,切断了进水池表面及两侧近壁区水体进入喇叭口的通道,出口水力性能降低;在池内设置检修胸墙,改变了表面水体流动方式,造成喇叭口单向进水,出口水力性能下降明显;同时设置检修胸墙及进水管后侧检修平台,池内水流紊乱,喇叭口单向进水,出口水力性能最差.因此,除水泵梁外,进水池中应避免设置其他构筑物.
위분석빙참진수지중구축물포치대수류적영향,채용CFD기술모의계산료진수지중불동구축물포치형식적수체류동상태.계산결과표명:재진수관량측설치수빙량,대진수지류태급나팔구출구수력성능기본무영향;진수측수빙량개위검수평태,평태하방출현횡축선와,나팔구출구수력성능략유강저;진수관후측설치검수평태,절단료진수지표면급량측근벽구수체진입나팔구적통도,출구수력성능강저;재지내설치검수흉장,개변료표면수체류동방식,조성나팔구단향진수,출구수력성능하강명현;동시설치검수흉장급진수관후측검수평태,지내수류문란,나팔구단향진수,출구수력성능최차.인차,제수빙량외,진수지중응피면설치기타구축물.
In order to analyze the effect of the structural layout in the sump of pumping stations, CFD technology was employed to simulate the flow regimes in the sump with different structural patterns. The simulated results show that the pump beams set at both sides of the inlet pipe basically have no effect on the flow regime in the sump and the hydraulic performance in the outlet of the trumpet mouth. When the pump beams at the side of the inlet pipe are changed to a maintenance platform, a horizontal vortex appears below the platform, and the hydraulic performance in the outlet of the trumpet mouth slightly decreases. When the maintenance platform is set behind the inlet pipe, the channel for the water at the sump surface and near-wall regions flowing into the trumpet mouth is cut off, and the hydraulic performance at the outlet decreases. When the maintenance breast wall is set in the sump, the flowing patterns of the surface water are changed, leading to one-way flows into the trumpet mouth, and the hydraulic performance at the outlet obviously decreases. When the maintenance breast wall in the sump and the maintenance platform behind the inlet pipe are simultaneously set, the flows in the sump are turbulent and result in one-way flows into the trumpet mouth, and the hydraulic performance at the outlet is worst. Therefore, except for the pump beams, other structures should not be set in the sump.