شبیه‌سازی عددی ناحیه پخت کوره گندله‌سازی مطالعه موردی: مجتمع صنعتی معدنی گل-گهر سیرجان

نوع مقاله : مقاله مکانیک

نویسندگان

1 دانشیار، دانشکده مهندسی مکانیک، دانشگاه صنعتی سیرجان، سیرجان، ایران

2 کارشناس ارشد، دانشکده مهندسی مکانیک، دانشگاه صنعتی سیرجان، سیرجان، ایران

چکیده

در این پژوهش، به شبیه­سازی عددی مسیر عبور جریان­های داغ در ناحیه پخت کوره گندله­سازی مجتمع معدنی صنعتی گل­گهر سیرجان پرداخته شده­است. در این راستا، از نرم­افزار اوپن­فوم که از برنامه­های شیء­گرا و بر پایه یک زبان برنامه­نویسی مناسب است بهره برده­است. محدوده مورد بررسی شامل صفحه خروجی مشعل­ها، لوله­های داون­کامر، محفظه احتراق، فضای درون کوره و ویندباکس بوده و بستر گندله به صورت متخلخل فرض شده­است. جریان مورد نظر به صورت پایا، تراکم­پذیر و مغشوش فرض شده­است که از بستر گندله با درصد تخلخل یکنواخت عبور می­کند. برای مدل­سازی جریان مغشوش از یک مدل دو معادله­ای مناسب بهره گرفته شده­است. علاوه­براین، دیواره­های کوره عایق، گرادیان دما و فشار روی دیواره­ها صفر و شرط عدم لغزش برای شرط مرزی سرعت فرض شده­اند. نتایج حاصل از شبیه­سازی حاکی از انحراف جریان­های داغ گازی به سمت دیواره­های جانبی بوده که می­تواند به عنوان یک عامل مهم در خوردگی و کاهش عمر آن­ها تلقی شود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Numerical Simulation of Pellet Furnace Firing Area Case Study: Golgohar Mining Industrial Complex in Sirjan

نویسندگان [English]

  • Mohammad Javad Mahmoodabadi 1
  • Mohsen Talebipour 2
1 Associate Professor, Department of Mechanical Engineering, Sirjan University of Technology, Sirjan, Iran
2 MSc, Department of Mechanical Engineering, Sirjan University of Technology, Sirjan, Iran
چکیده [English]

In this research, numerical simulation of the hot gas flow in the firing area of the pelletizing furnace in Golgohar mining-industrial complex is studied. In this regard, Open-Foam software as an objective-oriented program and based on a proper programming language is used. The considered area includes the outlet plane of the burners, the down comer pipes, the combustion chamber, the space of the furnace and the wind box, while the pellet bed is regarded as a porous media. The investigated flow is assumed as steady-state, compressible and turbulent that passes through the pellet bed having a uniform porosity percentage. In order to model the turbulent flow, an appropriate two-equations approach is employed. In addition, the walls of the furnace are assumed to be insulated, the gradients of the temperature and pressure on the walls are considered to be zero, and non-sliding condition is regarded for the boundary condition of the velocity. The simulation results illustrate that the hot gasses are diverted on the sidewalls, which could be considered as an important factor for corrosion and decreasing their life.
.

کلیدواژه‌ها [English]

  • Numerical simulation
  • Open-Foam software
  • Porous media
  • Steady-state flow
  • Compressible flow
  • Turbulent flow

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مدل سازی در مهندسی
دوره 22، شماره 78
در حال تکمیل شدن
آبان 1403
صفحه 249-257

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سابقه مقاله

  • تاریخ دریافت: 07 اردیبهشت 1402
  • تاریخ بازنگری: 25 بهمن 1402
  • تاریخ پذیرش: 29 بهمن 1402

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