اثر میدان الکتریکی بر عملکرد یک سیکلون مربعی

نوع مقاله : مقاله پژوهشی

نویسندگان

مهسا فتحی

مرتضی بیاره

گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه شهرکرد، شهرکرد، ایران

10.22067/jacsm.2024.88376.1265

چکیده

جداسازی ذرات جامد از فاز مایع یا گاز غالباً با استفاده از دستگاه‌های مکانیکی انجام می‌شود که مهم‌ترین آن‌ها، سیکلون‌ها هستند. ساختار ساده و هزینه‌های تولید و تعمیر و نگهداری کم باعث افزایش استفاده از جداکننده‌های سیکلون در صنایع برق، پتروشیمی، سیمان، چوب و ... شده است. هدف از این مطالعه بررسی اثر میدان ‌الکتریکی بر عملکرد یک سیکلون مربعی‌شکل است. از روش تنش رینولدز برای مدل‌کردن جریان مغشوش استفاده می‌شود. برای ردیابی ذرات جامد از کوپلینگ یک‌راهه و جهت مدل کردن جریان دوفازی از رویکرد اویلری-لاگرانژی بهره‌گیری خواهد شد. نیروی الکتریسیته توسط یک باتری لیتیوم -یونی به بدنه سیکلون اعمال شده و سرعت مماسی، سرعت محوری و افت فشار در ولتاژ‌های مختلف با هم مقایسه می‌شود. نتایج نشان دادند که نیروی الکتریسیته علاوه بر افزایش سرعت مماسی و سرعت محوری که باعث ازدیاد نیروی گریز از مرکز در سیکلون می‌شود، موجب پایدار شدن جریان شده و هوای خالص‌تری را وارد ورتکس‌یاب می‌کند. افزایش بازده و کاهش افت‌ فشار در اثر اعمال میدان الکتریکی نشان‌دهنده بهبود عملکرد سیکلون موردمطالعه است. نیروی الکتریکی باعث می‌شود افت‌فشار ناشی از عبور جریان سیال از این دستگاه در مقایسه با حالت بدون الکتریکی به مراتب کمتر شود. در نتیجه، سیکلون مربعی قادر خواهد بود گستره وسیعی از ذرات را با بازده بالا و افت فشار کم جدا نماید.

کلیدواژه‌ها

جداسازی ذرات

سیکلون مربعی

میدان الکتریکی

بازده جداسازی

افت فشار

موضوعات

• سیال با ذرات میکرو و نانو

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عنوان مقاله English

Effect of electric field on the performance of a square cyclone

نویسندگان English

Mahsa Fathi

Morteza Bayareh

Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran

چکیده English

The separation of solid particles from the liquid or gas phase is commonly done using mechanical devices, the most important of which are cyclones. The simple structure and low production and maintenance costs have increased the use of cyclone separators in the electricity, petrochemical, cement, wood, etc. industries. This study assesses an electric field's impact on a square cyclone's performance. Reynolds stress method is used to model turbulent flow. One-way coupling is employed to track solid particles and the Eulerian-Lagrangian approach is used to model two-phase flow. A lithium-ion battery applies the electric field to the cyclone body, and the tangential velocity, axial velocity, and pressure drop are compared at different voltages. The results demonstrate that the applied voltage, in addition to increasing the tangential and axial velocities, which causes an increase in the centrifugal force in the cyclone, stabilizes the flow and brings purer air into the vortex. The increase in efficiency and decrease in pressure drop due to the application of the electric field indicates an improvement in the performance of the studied cyclone. The electric field makes the pressure drop caused by the fluid flow passage through the device much less than the device when the voltage is zero. As a result, the square cyclone can separate a wide range of particles with high efficiency and low pressure drop.

کلیدواژه‌ها English

Particle separation

Square cyclone

Electric field

Separation efficiency

Pressure drop

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