تغییر شکل هندسی گلبول‌های قرمز در حضور میدان مغناطیسی

کدیور, عرفان; علیزاده, عاطفه

تغییر شکل هندسی گلبول‌های قرمز در حضور میدان مغناطیسی

نویسندگان

¹ صنعتی شیراز

² دانشگاه خلیج فارس بوشهر

چکیده

در این مقاله تاثیر میدان مغناطیسی بر شکل هندسی گلبولهای قرمز خون به روش عددی و تحلیلی مورد مطالعه قرار می گیرد. گلبولهای قرمز به صورت قطراتی تغییر شکل پذیر (ذرات نرم) که در پلاسمای خون در حال شارش هستند در نظر گرفته می شوند. با استفاده از روش المان مرزی، معادلات شارش گلبول قرمز در کانال میکروسیال تخت ، با به کارگیری مولفه‌ی عمودی تنش به عنوان شرایط مرزی درسطح ذرات به روش عددی حل می شوند. نتایج عددی نشان می دهد که گلبول قرمز در جهت میدان مغناطیسی کشیده می شود، شکل نهایی گلبول قرمز نتیجه ای از تعادل بین انرژی سطحی و انرژی مغناطیسی در سطح گلبول قرمز است.

کلیدواژه‌ها

20.1001.1.23223278.1397.7.1.6.0

عنوان مقاله [English]

Geometric Deformation of Red Cells in the Presence of a Magnetic Field

نویسندگان [English]

erfan kadivar ¹
atefe alizade ²

¹ shiraz

² khalije fars boushehr

چکیده [English]

In this study, we numerically and theoretically investigated the effect of magnetic field on shape of red cells. The two phase model was used for the dynamics of red cells. We considered red cells as deformable drops flowing through a flat microfluidic channel. We employed boundary element method (BEM) to numerically solve the two-dimensional Darcy equation by applying magnetic normal stress as a boundary condition at the interface of red cells and blood plasma. Our numerical and theoretical results indicate that red cells elongate in direction of magnetic fields. The final stable shape is a result of the balance between the surface energy and the magnetic energy of the drop. Our numerical and theoretical results are in good agreements with the experimental results.

کلیدواژه‌ها [English]

Red Cells
Microfluidic
Boundary Element Method Words

مراجع

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