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A novel Electrokinetic Micromixing System with Conductive Mixing-Enclosure-A Geometrical Study | ||
Journal of Heat and Mass Transfer Research | ||
دوره 9، شماره 1 - شماره پیاپی 17، مرداد 2022، صفحه 65-76 اصل مقاله (1.45 M) | ||
نوع مقاله: Full Length Research Article | ||
شناسه دیجیتال (DOI): 10.22075/jhmtr.2022.21707.1314 | ||
نویسندگان | ||
Morteza Nazari1؛ Saman Rashidi* 2؛ Javad Abolfazli Esfahani1؛ Souad Harmand3 | ||
1Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Iran | ||
2Department of Energy, Faculty of New Science and Technologies, Semnan University, Semnan, Iran | ||
3Université Polytechnique Hauts-de-France, Laboratoire d’Automatique, de Mécanique et d’Informatique Industrielles et Humaines (LAMIH-UMR CNRS 8201), Valenciennes, F59313, France | ||
تاریخ دریافت: 13 آبان 1399، تاریخ بازنگری: 31 خرداد 1401، تاریخ پذیرش: 25 تیر 1401 | ||
چکیده | ||
In this paper, an electrokinetic micromixing system with conductive mixing-enclosure is proposed. The simulated micromixer can be fabricated easily and accordingly, it can be used in the microfluidic systems effectively. The mixing process is intensified by controlling the geometry of the mixing-enclosure and electric field strength. The effects of different parameters including existence of mixing-enclosure, horizontal and vertical sizes of mixing-enclosure, orientation angle of mixing-enclosure, and electric field strength on the mixing index are studied. The mixing efficiencies and mixing lengths of current electrokinetic micromixer and those previously proposed by other researchers are compared. The results showed that the mixing efficiency can be enhanced significantly as a micromixer with conductive mixing-enclosure is employed. As an advantage of the proposed micromixer, the maximum mixing efficiency does not change by boosting the electric field strength in the range of 100 V.cm-1 to 200 V.cm-1, while the mixing time diminishes as the electric field strength increases in this range. For the conductive mixing-enclosure with the orientation angle of 45°, maximum mixing efficiency of 96.6% is achieved by exerting electric field with strength of 75 V.cm-1. The current electrokinetic micromixer has superior mixing efficiency and mixing length as compared with other electrokinetic micromixers. | ||
کلیدواژهها | ||
Electrokinetic micromixer؛ Intensification؛ Mixing index؛ Electric field؛ Mixing-enclosure geometry | ||
عنوان مقاله [English] | ||
مطالعه هندسی روی یک سیستم ریز مخلوطگر الکتروکینتیک با محفظه اختلاط رسانا | ||
چکیده [English] | ||
در این مقاله، یک سیستم میکرو مخلوط گر الکتروکینتیک با محفظه اختلاط رسانا پیشنهاد شده است. میکرو مخلوط گر شبیه سازی شده می تواند به راحتی ساخته شود و بر این اساس، می تواند به طور موثری در سیستم های میکروفلوئیدیک استفاده شود. فرآیند اختلاط با کنترل هندسه محفظه اختلاط و شدت میدان الکتریکی تشدید می شود. اثرات پارامترهای مختلف از جمله وجود محفظه اختلاط، اندازه های افقی و عمودی محفظه اختلاط ، زاویه جهت محفظه اختلاط و شدت میدان الکتریکی بر شاخص اختلاط مورد مطالعه قرار گرفته است. راندمان اختلاط و طول اختلاط ریز مخلوط گر الکتروکینتیک فعلی و مخلوط گرهایی که قبلاً توسط سایر محققان ارائه شده اند مقایسه می شوند. نتایج نشان داد که می توان با استفاده مخلوط گر با محفظه اختلاط رسانا، راندمان اختلاط را به میزان قابل توجهی افزایش داد. به عنوان یک مزیت، حداکثر کارایی اختلاط ریز مخلوطگر پیشنهادی با افزایش قدرت میدان الکتریکی در محدوده 100 تا 1200 ولت بر سانتیمتر تغییر نمی کند در حالی که با افزایش قدرت میدان الکتریکی در این محدوده، زمان مخلوط شدن کاهش می یابد. برای محفظه اختلاط رسانا با زاویه جهت 45 درجه، حداکثر بازده اختلاط 96.6 درصدی با اعمال میدان الکتریکی با قدرت 75 ولت بر سانتی متر متر حاصل می شود. ریز مخلوطگر الکتروکینتیک فعلی در مقایسه با سایر ریز مخلوطگرهای الکتروکینتیک دارای کارایی و طول اختلاط بهتری است. | ||
کلیدواژهها [English] | ||
ریز مخلوطگر الکتروکینتیک؛ تشدید, شاخص اختلاط, میدان الکتریکی؛ هندسه محفظه اختلاط | ||
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