کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7880139 1509586 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical study of molten and semi-molten ceramic impingement by using coupled Eulerian and Lagrangian method
ترجمه فارسی عنوان
بررسی عددی جوش سرامیکی مذاب و نیمه ریخته شده با استفاده از روش اویلر و لاگرانژ
کلمات کلیدی
اسپری حرارتی ذرات نیمه ذوب، روش یولرین و لاگرانژ همراه، سطح مقطع
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
Large temperature gradients are present within ceramic powder particles during plasma spray deposition due to their low thermal conductivity. The particles often impinge at the substrate in a semi-molten form which in turn substantially affects the final characteristics of the coating being formed. This study is dedicated to a novel modeling approach of a coupled Eulerian and Lagrangian (CEL) method for both fully molten and semi-molten droplet impingement processes. The simulation provides an insight to the deformation mechanism of the solid core YSZ and illustrates the freezing-induced break-up and spreading at the splat periphery. A 30 μm fully molten YSZ particle and an 80 μm semi-molten YSZ particle with different core sizes and initial velocity ranging from 100 to 240 m/s were examined. The flattened degree for both cases were obtained and compared with experimental and analytical data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 90, 15 May 2015, Pages 77-87
نویسندگان
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