摘要
设计了一种蒸汽入口中心线与轴有偏移量的旋流型汽水混合加热器。应用CFD软件FLUENT和VOF多相流模型模拟了汽水混合加热器内的两相流动,模拟结果与实验结果基本吻合。模拟结果表明:旋流型汽水混合加热器使蒸汽在蒸汽室内形成了旋流状态,偏移量越大旋流越好,汽水混合加热器内的温差越小,质量传递系数越大。
A new cyclone steam-water heater was designed which has offset between steam inlet centerline and axis.The CFD＇s FLUENT software and the VOF multiphase flow model were adopted to simulate steam-water flow in the heater.The simulation result which agrees with experimental result shows that this heater can make steam become rotational flow in steam room,and with the increasing of offset,the rotational effect becomes better together with small temperature difference and big mass transfer coefficients.
出处
《化工机械》
CAS
2012年第6期765-768,783,共5页
Chemical Engineering & Machinery
关键词
加热器
旋流
汽水混合
数值模拟
heater
rotational flow
steam-water mixing
numerical simulation
