基于FLUENT的耐火料湿喷机喷补装置优化设计

发布时间：2018-01-03 10:39

本文关键词：基于FLUENT的耐火料湿喷机喷补装置优化设计　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：不定形耐火料采用湿式喷涂施工,是今后耐火材料施工的主流方向。该施工法需要专门的施工机械—湿喷机,其中,不定形耐火料湿喷机喷补装置的设计是否合理直接决定了施工过程中耐火料喷涂层的形成,影响了湿喷机的加工效率及施工质量。计算流体动力学(CFD)是在流动学基本方程的控制下,通过数值计算来分析流体流动状况及其变化规律的一种研究方法,本论文基于课题组前期对湿喷机的调研和设计完成,根据实际工况分析研究了物料在管道内及喷嘴处的输送状态以及流动状态,并且利用基于CFD方法的Fluent软件对耐火料的流动状况进行了数值模拟,并根据模拟结果提出了喷补装置的优化方案,以改善耐火料湿喷机的耐火料喷补性能,使其满足实际的施工质量要求。本文的主要研究内容如下:(1)通过流体动力学理论,分析了耐火材料在管道内的流动状态;在此基础上利用专业CFD软件FLUENT对物料在管道内的流动状况进行数值模拟,为管路铺设及选材提供了参考依据。(2)针对喷嘴实际工况提出喷补装置的设计方案,并对其喷嘴部分进行了流场数值实验,提出了对喷嘴结构的优化方案,为提高耐火料湿喷机的喷射质量提供参考。CFD方法相比传统理论分析及实验方法,可以模拟理想环境或特殊条件下的各种模型,具有较好的灵活性,能给出完整且详细的资料,在耐火料湿喷机喷补装置的设计中采用CFD方法可以减少研发成本,缩短研发周期。
[Abstract]:The construction of amorphous refractory by wet spraying is the main direction of refractory construction in the future. This construction method needs a special construction machine-wet spraying machine. Whether the design of the spraying device of the wet spraying machine with amorphous refractory material is reasonable or not directly determines the formation of the refractory spraying coating in the construction process. The processing efficiency and construction quality of the wet jet machine are affected. The computational fluid dynamics (CFD) is controlled by the basic flow equation. This paper is based on the previous research and design of wet jet machine. According to the actual working conditions, the conveying state and flow state of the material in the pipeline and the nozzle are analyzed and studied, and the flow state of the refractory is numerically simulated by using the Fluent software based on the CFD method. According to the simulation results, the optimization scheme of the spraying device is put forward to improve the fire-resistant material spraying performance of the fire-resistant wet spraying machine. The main contents of this paper are as follows: 1) the flow state of refractories in pipeline is analyzed by hydrodynamic theory. On this basis, the flow of material in the pipeline is simulated by using the professional CFD software FLUENT. It provides a reference basis for pipeline laying and material selection. (2) according to the actual working conditions of the nozzle, the design scheme of the nozzle filling device is put forward, and the flow field numerical experiment of the nozzle part is carried out, and the optimization scheme of the nozzle structure is put forward. In order to improve the injection quality of the fire-resistant wet injection machine, the CFD method is more flexible than the traditional theoretical analysis and experimental method. It can simulate various models under ideal environment or special conditions. The method of CFD can reduce the cost of research and development and shorten the period of research and development.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB306

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