喷嘴出口截面形状对冷喷涂涂层性能影响的数值分析  

Computational Simulation of the Effect of Nozzle Export Section Shape on Cold Spraying Technology for Material Modification

作　　者：王晓放[1] 李芳[1] 赵爱娃[1] 吴杰[2] 

机构地区：[1]大连理工大学热能与动力工程学院,辽宁大连116024 [2]中国科学院金属研究所,辽宁沈阳110016

出　　处：《机械工程材料》2006年第12期84-86,共3页Materials For Mechanical Engineering

基　　金：国家自然科学基金(50476075)

摘　　要：制备冷喷涂涂层的沉积速度、有效喷涂面积及均匀程度与喷嘴出口截面形状有重要关联。通过对冷喷涂射流流场的数值模拟,比对了不同喷嘴截面形状的流场特点。结果表明:矩型喷嘴截面形状有利于大面积均匀涂层生成,相同条件下,所制备涂层的性能优于圆型喷嘴,这与相关试验结果吻合较好。The speed of coating growth, the area of effective spraying and the eveness of spraying had important relationship with nozzle export section shape By the numerical simulation of jet-flow field, comparison of the important feature of different nozzle export section shapes, indicates that nozzle export section with rectangle shape is good for the even coating of big area spraying, and better than that with circle shape This conclusion coincides well with relative result in laboratory.

关 键 词：冷喷涂 喷嘴截面 数值模拟 

分 类 号：TB43[一般工业技术] O241[理学—计算数学]