کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8024173 1517544 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Three-dimensional numerical simulations of the particle loading effect on gas flow features for low pressure cold spray applications
ترجمه فارسی عنوان
شبیه سازی عددی سه بعدی از تاثیر بارگذاری ذرات بر ویژگی های جریان گاز برای کاربردهای اسپری سرد کم فشار
کلمات کلیدی
اسپری سرد نازل فشار پایین، شبیه سازی عددی، بارگذاری ذرات، مدل سه بعدی، اتصال فاز،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی
This paper reports numerical investigations to develop a high quality simulation model for the Cold Spray (CS) process as part of the project, Supersonic Spray Advanced Modelling (SSAM). Cold spray is a process in which unmelted solid particles are accelerated through a De Laval nozzle toward a target surface and deposited, which avoids or minimises the detrimental effects that arise from melting. The gas flow injected allows the particles to achieve velocities up to 1000 m/s until they impact onto a substrate, bonding with plastic deformation. Analytical and numerical tools were used in the recent years to study the most important parameters of the fluid dynamic of the process. These parameters are often overestimated or non-validated, as many authors tend to neglect inter-phase couplings. The interactions between the gas flow features and particulate phase are important for the present multiphase flows, and many of the connected phenomena lack physical comprehension. For this purpose, a detailed 3D model for RANS simulations has been realised and the gas and particle dynamics in the nozzle and jet were analysed. Advancements for future computational methods are derived from this study, in order to build a comprehensive and coherent numerical model for cold spray applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface and Coatings Technology - Volume 339, 15 April 2018, Pages 181-190
نویسندگان
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