The effect of swirl intensity on the probability of successful ignition and kernel propagation in the Amirkabir double swirl burner.
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
In this article, the influences of swirl intensity on the mixing pattern, successful ignition probability, and flame propagation manner in a non-premixed gas burner with natural gas fuel have been examined by using numerical simulation and high-speed digital imaging. The ignition success probability maps were scrutinized under changing spark location in axial and radial directions. The flow field and mixing pattern were further inspected with the aid of numerical simulation. High-speed digital imaging was employed to study the initial flame kernel propagation. The ignition success probability diagrams defined three areas. The first, dubbed the ineffective zone, holds less than a 20% ignition success chance. The second, known as the transitional zone, has an ignition success probability between 20% and 80%. Ignition success here significantly depends on the spark location. The third area—the high-probability zone—has over an 80% ignition success chance. Findings from the study demonstrate an increased swirl number promotes a higher mixing rate, but it doesn't enhance the distribution of successful ignition probability. Higher swirl numbers actually reduce the high-probability zone, whereas lower swirl numbers allow a broader distribution in the burner outlet and better ignition characteristics.
Keywords:
Language:
Persian
Published:
Fuel and Combustion, Volume:15 Issue: 4, 2023
Pages:
129 to 158
magiran.com/p2639700
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!