مدل‌سازی عددی انتقال تابش در راکتور فوتوکاتالیستی نت‌میکس با استفاده از روش ردیابی پرتو همیلتونی در کامسول

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده مهندسی مکانیک، دانشگاه صنعتی اصفهان، اصفهان

چکیده

در این مقاله، به‌منظور بهینه‌سازی توزیع شدت نور بر سطح فوتوکاتالیستی یک راکتور NETmix، تأثیر پنج پارامتر کلیدی شامل زاویه تابش، توان منبع نوری، نوع آرایش، تعداد منابع نور، و فاصله منبع تا سطح کاتالیست به‌صورت عددی مورد بررسی قرار گرفت. هندسه دقیق راکتور با استفاده از ماژول Ray Optics در نرم‌افزار کامسول مدل‌سازی شد و توزیع شدت تابش برای ۲۵ ترکیب مختلف از این پارامترها شبیه‌سازی گردید. نتایج کیفی و کمی حاصل از کانتورهای تابش و میانگین شدت نور نشان داد که آرایش شش‌ضلعی یکنواخت‌ترین توزیع نور را فراهم می‌کند، در حالی که ترکیب خاصی از پارامترها شامل زاویه ۱۰۰ درجه، توان ۱۰ وات، آرایش مربعی، تعداد ۷۲ ال‌ای‌دی و فاصله ۱۰ میلی‌متر، بیشترین مقدار میانگین تابش به میزان ۸۹۹٫۹ وات بر متر مربع را ایجاد کرده است. تحلیل نتایج نشان داد که انتخاب ترکیب بهینه‌ای از پارامترهای نوری، نقش تعیین‌کننده‌ای در بهبود عملکرد فوتوکاتالیستی دارد؛ به‌طوری‌که بهینه‌سازی تنها یک متغیر، بدون در نظر گرفتن تأثیر متقابل سایر پارامترها، نمی‌تواند به نتایج مطلوب منجر شود. این پژوهش با ارائه یک چارچوب عددی جامع برای تحلیل توزیع تابش در راکتورهای فوتوکاتالیستی، می‌تواند به‌عنوان مبنایی برای طراحی مؤثر سیستم‌های نوری در کاربردهایی نظیر تصفیه، سنتز و فرایندهای فتوشیمیایی مورد استفاده قرار گیرد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Numerical Modeling of Radiative Transfer in NETmix Photocatalytic Reactors Using Hamiltonian-Based Ray Tracing in COMSOL

نویسندگان [English]

  • Ahmad Hamzavi
  • Mohsen Emami
Department of Mechanical Engineering, Isfahan University of Technology, Isfahan, Iran
چکیده [English]

In this paper, a numerical study was carried out to optimize the light intensity distribution over the photocatalytic surface of a NETmix reactor by examining the influence of five key parameters: irradiation angle, light source power, arrangement type, number of sources, and the distance between the sources and the catalyst surface. The exact geometry of the reactor was modeled using the Ray Optics module in COMSOL Multiphysics, and the light intensity distribution was simulated for 25 different combinations of these parameters. Qualitative and quantitative results from radiation contours and average light intensity showed that a hexagonal arrangement provides the most uniform light distribution, while specific parameter values—including an angle of 100°, power of 10 W, square arrangement, 72 LEDs, and a distance of 10 mm—produced the highest average irradiance of 899.9 W/m². Analysis of the results indicated that selecting the optimal combination of optical parameters plays a decisive role in enhancing photocatalytic performance; optimizing only one variable without considering others will not yield satisfactory results. This study can serve as a foundation for effective optical design in purification, synthesis, and photochemical processes by providing a comprehensive numerical framework for analyzing light distribution in photocatalytic reactors.

کلیدواژه‌ها [English]

  • Photocatalytic Reactor
  • Radiative Transfer
  • Ray Tracing Method
  • Wavefront Propagation
  • Hamiltonian Optics

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