Numerical approach and optimization of the combustion and gas dynamics in High Velocity Suspension Flame Spraying (HVSFS)

Numerical approach and optimization of the combustion and gas dynamics in High Velocity Suspension Flame Spraying (HVSFS)
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高速悬浮火焰喷涂 (HVSFS) 中燃烧和气体动力学的数值方法和优化

DOI:
10.1016/j.surfcoat.2008.12.006
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发表时间:
2009
影响因子:
5.4
通讯作者:
Gadow R.
Gadow R.
中科院分区:
材料科学1区
文献类型:
--
作者:
Dongmo E;Killinger A;Wenzelburger M;Gadow R.

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在过去的十年中,人们对热喷涂技术在不同表面应用的亚微米和纳米结构涂层的兴趣显著增加。传统的超音速火焰喷涂工艺不适合获得亚微米和纳米颗粒。因此,高速悬浮火焰喷涂(HVSFS)被开发用于纳米结构喷涂材料的加工,以获得超音速致密的表面层和细化的微米或纳米结构,从而期望获得优异的力学和物理性能。然而,超高压超临界流体反应流场中的化学和热力学现象是一个具有挑战性的多学科问题。本研究旨在通过CFD模型和数值计算来分析和理解暖通助燃锅炉的燃烧和流动动力学系统。最终目标是通过模拟实验中的变化来优化工艺参数。
The interest in submicron and nano-structured layers applied by thermal spray technologies on different surfaces has been significantly increased during the last decade. Conventional HVOF spraying processes are not suitable to achieve submicron and nano-particles. Therefore, High Velocity Suspension Flame Spraying (HVSFS) has been developed for the processing of nano-structured spray material to achieve dense surface layers in supersonic mode with a refined micro- or nano-structure, from which superior mechanical and physical properties are expected. However, the chemical and thermodynamic phenomena occurring in the HVSFS reacting flow field are a challenging, multidisciplinary issue. This study is intended to analyze and understand the HVSFS combustion and flow dynamic system on the basis of a CFD model and numerical calculation. The final aim is an optimization of the process parameters by variations during simulation experiments.
高速悬浮火焰喷涂 (HVSFS) 玻璃涂层的研究
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