Abstract: This research investigated the fouling characteristics of vortex generator using Fortran language and introduced crystallization fouling model to simulate the process of fouling formation on the rectangle block vortex generator surface with CaSO4 solution flowin the rectangular channels. The influence of the stracture size （horizontal spacing，vertical height） and flow conditions （inlet velocity，wall temperature，working solution concentration） were discussed. According to the simulation data from the rectangle block vortex generator of the surface depositional rate，denudation rate and fouling resistance with time，it was found that the best fouling inhibition effect between structure size x=40mm，h=0.3H. The influnces of fouling deposition process were summarized. Compared with equipped vortex generator situation，surface fouling deposition reduced and the thermal efficiency greatly improved.

Key words: vortex generator, crystallization fouling, fouling characteristics, CaSO4 solution

摘要： 为了研究涡流发生器的污垢沉积特性，运用Fortran汇编语言自主编程，引用析晶污垢模型模拟了CaSO4溶液流经矩形通道并在矩形楞涡流发生器表面生成污垢的过程。考察了涡流发生器楞的结构尺寸（横向排列间距、纵向高度）以及流动工况（入口速度、壁面温度、工质浓度）对污垢特性的影响。根据模拟数据给出的矩形楞涡流发生器表面CaSO4污垢沉积率、剥蚀率及污垢热阻随时间曲线的变化规律，得到了抑垢效果最佳时的结构尺寸x=40mm、h=0.3H，并总结出污垢沉积过程的影响趋势。通过模拟对比，发现加入涡流发生器后，流通壁面污垢沉积减少，大大提高了换热效率。

关键词: 涡流发生器, 析晶污垢, 污垢特性, CaSO4溶液