کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
586641 1453282 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical analysis of hydrogen deflagration mitigation by venting through a duct
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Numerical analysis of hydrogen deflagration mitigation by venting through a duct
چکیده انگلیسی

This paper presents a model and simulation results for the mitigation of a hydrogen–air deflagration by venting through a duct. A large eddy simulation (LES) model, applied previously to study both closed-vessel, and open atmosphere hydrogen–air deflagrations, was developed further to model a hydrogen–air explosion vented through a duct. Sub-grid scale (SGS) flame wrinkling factors were introduced to model major phenomena which contribute to the increase of flame surface area in vented deflagrations. Simulations were conducted to validate the model against 20% hydrogen–air mixture deflagrations (vent diameters 25 and 45 cm) and 10% hydrogen–air mixture deflagration (vent diameter 25 cm). There was reasonable correlation between the simulations and the experimental data. The comparative importance of different physical phenomena contributing to the flame wrinkling is discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Loss Prevention in the Process Industries - Volume 20, Issues 4–6, July–November 2007, Pages 433–438
نویسندگان
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