The present study examines the flare tip of a gas refinery. The practical solution was proposed for the destruction of the flare tip because of the flame downwash in the windy condition. CFD modelling was carried out for the flare tip in a 3-dimensional, steady state condition and non-premixed combustion model by the Fluent commercial software. In order to validate the computational results, and compare with the operational data, the flare flame was taken photographed by a thermography camera. The photos were analyzed by ICI-Reporter software. The CFD results of temperature distribution in the symmetry line are compared with the actual results of the photography. Then, the effect of the windshield is investigated on the flare performance. Without a windshield, closed plate, closed mesh, open plate and open mesh windshields are the five different type of windshields which were used in the simulations. Results show that a closed windshield prevents the flame entrance to the space between the flare tip and windshield. This reduced the flare tip body temperature. A closed mesh windshield has the best performance and can eliminate the flame downwash.

中文翻译：

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使用 CFD 模拟研究具有各种挡风玻璃设计的天然气精炼厂的火炬头

本研究考察了一家天然气精炼厂的火炬头。针对在大风条件下火焰下洗造成的火炬头损坏提出了实用的解决方案。通过 Fluent 商业软件在 3 维、稳态条件和非预混燃烧模型中对火炬头进行 CFD 建模。为了验证计算结果，并与运行数据进行比较，利用热成像相机拍摄了耀斑火焰。照片由ICI-Reporter软件分析。对称线中温度分布的CFD结果与摄影的实际结果进行了比较。然后，研究了挡风玻璃对耀斑性能的影响。没有挡风玻璃，封闭板，封闭网，开板和开网挡风玻璃是模拟中使用的五种不同类型的挡风玻璃。结果表明，封闭的挡风玻璃可防止火焰进入火炬头和挡风玻璃之间的空间。这降低了火炬头本体温度。封闭的网状挡风玻璃性能最佳，可以消除火焰下洗。