کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4915502 1427919 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulation of under-ventilated liquid-fueled compartment fires with flame extinction and thermally-driven fuel evaporation
ترجمه فارسی عنوان
شبیه سازی عددی از آتش سوزی های محفظه مایع تحت تهویه با انقراض شعله و تبخیر سوخت از طریق حرارتی
کلمات کلیدی
آتش سوزی تحت تهویه، انفجار شعله افشانه، راندمان احتراق، تبخیر سوخت، شبیه سازی بزرگ چرخ دنده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Compartment fires exhibit unique features associated with smoke accumulation and restricted air ventilation. The objective of the present study is to evaluate the ability of CFD-based fire models to simulate these features and in particular the effects of flame extinction that results from under-ventilated fire conditions. The study is performed using FireFOAM; FireFOAM is an advanced fire modeling software developed by FM Global and is based on a general-purpose open-source software called OpenFOAM. A new flame extinction model based on the concept of a critical value of the flame Damköhler number is incorporated into FireFOAM. The performance of the extinction model is evaluated via comparisons with a previously developed experimental database corresponding to a reduced-scale, heptane-fueled, compartment fire configuration. The numerical simulations also include a description of fuel evaporation driven by the computed gas-to-liquid heat feedback. Comparisons between experimental data and numerical results provide a suitable test bed to evaluate the ability of CFD-based fire models to describe the transition from over- to under-ventilated fire conditions, as well as the transition from extinction-free conditions to conditions in which the flame experiences partial or total quenching.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Proceedings of the Combustion Institute - Volume 35, Issue 3, 2015, Pages 2563-2571
نویسندگان
, , , ,