CAJ | 학술논문

为天津地铁改建、扩建所需,采用数学模拟方法对原有站台通风系统的气流组织效果进行评价,在此基础上提出通风系统的改建方案,并对新方案的速度场、温度场进行优化.借助实际流场的测试数据判断紊流模型的适用性,并通过现场测试获得了所需边界条件值.模拟结果与实测数据相符,证明了双方程紊流模型用于模拟站台的复杂流场是可行的.模拟时将列车进站过程的瞬时流简化为稳定流,并对此假设前提下模拟结果的有效性给予认证.
위천진지철개건、확건소수,채용수학모의방법대원유참태통풍계통적기류조직효과진행평개,재차기출상제출통풍계통적개건방안,병대신방안적속도장、온도장진행우화.차조실제류장적측시수거판단문류모형적괄용성,병통과현장측시획득료소수변계조건치.모의결과여실측수거상부,증명료쌍방정문류모형용우모의참태적복잡류장시가행적.모의시장열차진참과정적순시류간화위은정류,병대차가설전제하모의결과적유효성급여인증.
In rebuilding Tianjin Metro, numerical simulations are performed to evaluate the original design of theventilation system of Southwest Station and a new system is given to optimize the velocity and temperature fieldsat the station. Field measurements are conducted to validate the turbulence model and acquire boundary condi-tions. The simulation result tallies with testing data on the sport that is found that two-equation turbulence modelis acceptable in simulating complex flow at the station. A method of simplifying the simulation of the transientflow at the station into steady flow is used and the validation criterion for this simulation is also given.