Interaction between two spheroidal drops in Couette flow: impact of initial offset and deformability

سال انتشار: 1403
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 22

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شناسه ملی سند علمی:

JR_EES-12-1_001

تاریخ نمایه سازی: 9 اردیبهشت 1403

چکیده مقاله:

The collision of two spheroidal drops in a shear flow is simulated in this paper using the finite difference/front tracking method. The influences of deformability, initial offset, and the size of drops on their collision dynamics are assessed. It is demonstrated that the non-dimensional relative trajectory of a pair of drops, ∆z/R, is enhanced gradually as they approach and then, gains a maximum value and finally, reaches a new constant value after separation. An enhancement in the capillary number results in an increase in the deformation of the drops. The deformation and the time required for the collision of two drops are reduced as their initial offset is enhanced. It is revealed that as the ratio of major diameter to minor diameter of spheroidal drops is intensified, their deformation is enhanced.

نویسندگان

Parisa Armandoost

Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran

Morteza Bayareh

Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran

Afshin Ahmadi Nadooshan

Department of Mechanical Engineering, Shahrekord University, Shahrekord, Iran

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