Effect of ‎C‎ross-Section on the Mixing of Liquid Species in Helix Micromixers, A Numerical Approach‎

محورهای موضوعی : مجله بین المللی ریاضیات صنعتی

T. Dehgani ¹ , R. Pirkhoshghiafe ² , P. Balazadeh ³ , F. Sadegh Moghanlou ⁴

1 - Department of Mechanical Engineering; University of Mohaghegh Ardabili, Ardabil, Iran.
2 - Department of Mechanical Engineering; Tabriz University, Tabriz, Iran.
3 - Department of Mechanical Engineering; University of Mohaghegh Ardabili, Ardabil, Iran.
4 - Department of Mechanical Engineering; University of Mohaghegh Ardabili, Ardabil, Iran.

تاریخ دریافت : 1398/11/24 تاریخ پذیرش : 1400/06/09 تاریخ انتشار : 1400/04/10

کلید واژه: Mixing Index, Micromixer, numerical method, Laminar flow, Secondary flow,

چکیده مقاله :

Micromixers are an important part of microfluidics systems. In the present work, mixing was enhanced through the three helix types of micromixers. As a result of Dean vortices, a mixing index of 99% obtained at a very short length of the micromixers for the Reynolds number of 10. It is also obtained that the micromixer with rectangular cross-section showed better enhancement compared to the circular and triangular cross-section.

چکیده انگلیسی:

میکرومیکسرها بخش مهمی از سیستم‌های میکروسیالات هستند. در کار حاضر، اختلاط در سه سطح  مقطع بررسی شده است. در اثر تولید گردابه های دین، شاخص اختلاط ۹۹ درصد در طول کوتاهتری از میکرومیکسر ودر رینولدز ۱۰ بدست آمده است. همچنین در مقایسه با سطح مقطع های مثلثی و دایره ای سطح مقطع مستطیلی راندمان بهتری دارد.

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