کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7706048 1497304 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A simple and effective approach for evaluating unconfined hydrogen/air cloud explosions
ترجمه فارسی عنوان
یک رویکرد ساده و موثر برای ارزیابی انفجارهای ابر هیدروژن / هوای غیرقابل تصور
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
The topic of hydrogen safety assessment has been focused by many researchers. The overpressure evaluation of vapor cloud explosion (VCE), is an important issue for both designing and evaluating on chemical plants, as well as buildings. Unknown flame radius history limits the original acoustic approximation model's application. The objective of this work is to develop an achievable model for hydrogen/air deflagration assessment in engineering applications, and the model should have high computational efficiency. A tentative scheme that starts from flame/piston speed history solving was adopted, and the flame/piston radius and acceleration history will be obtained subsequently. Thus, the overpressure history for far field could be gotten based on the acoustic approximation model. A simplified scheme was employed for the region inside the flame cloud. The model proposed in this paper could be solved in several seconds, because there are no differential equations but only algebraic equations. The model was verified by hydrogen/air deflagration tests from small scale to large scale. Compared with the experimental data, the model appeared well agreements in the medium and large scale cases. In the small scale cases, the model obtained acceptable solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 21, 24 May 2018, Pages 10193-10204
نویسندگان
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