数值模拟技术在制备燃气轮机叶片中的应用

发布时间：2018-05-16 19:01

本文选题：燃气轮机叶片 + 数值模拟　；参考：《特种铸造及有色合金》2016年12期

【摘要】：从单晶叶片的选晶过程、HRS定向凝固工艺制备航空叶片及LMC工艺制备重型燃气轮机叶片3方面,简要介绍了数值模拟技术的研究进展。描述了数理模型的建立,对比分析了两种不同的定向凝固工艺的优缺点。螺旋选晶器的设计对单晶叶片的制备影响较大,其设计失效可能会导致选晶效率差,出现杂晶缺陷等。通过对航空叶片温度场及微观组织的模拟,结合试验研究,优化了工艺,成功制备出单晶叶片。重型燃气轮机叶片制备更为复杂,通过数值模拟缩短了研发周期,节约了成本。
[Abstract]:The research progress of numerical simulation technology is briefly introduced from three aspects: preparation of aeronautical blade by HRS directional solidification process of single crystal blade and preparation of heavy gas turbine blade by LMC process. The establishment of mathematical model is described and the advantages and disadvantages of two different directional solidification processes are compared and analyzed. The design of spiral crystal selector has a great influence on the preparation of single crystal blade, and its design failure may lead to poor efficiency and heterocrystalline defects. By simulating the temperature field and microstructure of aeronautical blade and combining the experimental study, the single crystal blade was successfully prepared by optimizing the process. The preparation of heavy gas turbine blade is more complicated, the research and development cycle is shortened by numerical simulation, and the cost is saved.
【作者单位】：清华大学材料学院先进成形制造教育部重点实验室;
【基金】：国家重点基础研究发展计划(973计划)资助项目(2011CB706801) 国家自然科学基金资助项目(51171089,51374137) 国家科技重大专项资助项目(2012ZX04012-011,2011ZX04014-052,2009ZX04006-041)
【分类号】：TK473

【相似文献】