کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10416689 901893 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of pressure and surface roughness on the heat transfer efficiency during water spray quenching of 6082 aluminum alloy
ترجمه فارسی عنوان
تأثیر فشار و زبری سطح بر راندمان انتقال حرارت در خنک کردن اسپری آب 6082 آلومینیوم
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
چکیده انگلیسی
The heat flux (q) and heat transfer coefficient (h) at the interface between hot aluminum surface and spray water were determined by using an inverse heat conduction method. Good agreements between numerically calculated temperatures with the inverse identified h and experimentally measurements demonstrate that the method is valid for solving the q and h of spray quenching process. The estimated heat flux consists of three main stages of transition boiling, nucleate boiling and single-phase cooling. The results show that both the heat flux and heat transfer coefficient increase with the increasing of spray pressure. When the surface temperature is lower than 170 °C, the q, h and the maximum heat transfer coefficient (hmax) decrease and then increase as surface roughness increases. However, when the surface temperature is higher than 170 °C, the influence of surface is insignificant. This phenomenon may be attributed to the variation of nucleation site density with surface roughness.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Processing Technology - Volume 214, Issue 12, December 2014, Pages 2877-2883
نویسندگان
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