摘要
针对喷嘴的工作特性及结构特点,运用流体动力学方法对喷嘴内含3、4、5及6块挡流板等4种情况进行热分析,依据涡流强化传热理论,探讨喷嘴腔壁面及剖面(y=0)温度分布规律。研究表明:喷嘴内含3、5及6块挡流板装置时,横切面壁面处的强化对流给热系数和散热量相对较小;液体入口近端和远端喷孔处热分布规律大致相同。为进一步应用数值方法优化喷嘴内部结构,提高其整体性能打下了基础。
According to nozzle working characteristics and structure characteristics, this paper uses fluid dynamics method for nozzle with 3, 4, 5 and 6 block baffle flow board 4 on thermal analysis, and discusses the nozzle cavity wall and profile （y=0） temperature distribution, on the basis of the eddy current strengthening heat transfer theory. Research shows when the nozzle has 3, 5 and 6 block baffle device, there will be a lower strengthen convection heat transfer coefficient and Heat dissipating cross-section; and the spray holes ends have roughly the same thermal capacity at the wall surface of at liquid inlet proximal and distal distribution. This paper has done a previous job for the further application of numerical method optimization nozzle internal struclure and improvement of the nozzle overall performance.
出处
《现代制造技术与装备》
2012年第6期1-3,8,共4页
Modern Manufacturing Technology and Equipment
关键词
喷嘴
涡流
传热
调流板
nozzle, eddy current, heat transfer, adjusting flow board
