EXPERIMENTAL INVESTIGATION ON RISING OF A SEQUENCE OF DROPS IN A VISCOUS FLUID

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AMINZADEH MILAD; MALEKI ZAMENJANI AMIR; AFSHIN HOSSEIN; FIROOZABADI BAHAR

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Journal: JOURNAL OF SOLID AND FLUID MECHANICS Year:2011 | Volume:1 | Issue:1 Page(s): 39-46

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Title

EXPERIMENTAL INVESTIGATION ON RISING OF A SEQUENCE OF DROPS IN A VISCOUS FLUID

Author(s)

AMINZADEH MILAD | MALEKI ZAMENJANI AMIR | AFSHIN HOSSEIN | FIROOZABADI BAHAR | Issue Writer Certificate

Keywords

IMMISCIBLE LIQUIDSQ2

SEQUENCE OF DROPSQ2

POLYMERIC SOLUTIONSQ2

DRAG COEFFICIENTQ1

Abstract

Motion and deformation of a SEQUENCE OF DROPS rising through an immiscible viscous fluid (water) were studied experimentally using an image analysis method. In order to have a complete investigation between the behavior of a drop moving in the wake region of another one and a single drop moving freely in a quiescent fluid, we compared the shape evolution and the DRAG COEFFICIENT related to a single drop and a distinct drop in a sequence. Also, the effect of non-Newtonian characteristics on the size variation and motion of drops was studied. Results show that addition of viscoelastic characteristics to a fluid causes a more stable shape in the drop and its deformation is closer to a single drop during motion in the wake region. Besides, in order to find a reasonable correlation between DRAG COEFFICIENT and Reynolds number for a drop moving in sequence, we used a two dimensional model based on drop trajectory. In addition, a theoretical correlation in the form CD=a.Reb was proposed by neglecting the effect of size variations of a single drop and it caused an error lower than 25% in comparison to real values. Comparison between DRAG COEFFICIENTs of a single drop and a SEQUENCE OF DROPS revealeddrops experience higher values of DRAG COEFFICIENT during the motion in sequence.

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APA: Copy

AMINZADEH, MILAD, MALEKI ZAMENJANI, AMIR, AFSHIN, HOSSEIN, & FIROOZABADI, BAHAR. (2011). EXPERIMENTAL INVESTIGATION ON RISING OF A SEQUENCE OF DROPS IN A VISCOUS FLUID. JOURNAL OF SOLID AND FLUID MECHANICS, 1(1), 39-46. SID. https://sid.ir/paper/212730/en

Vancouver: Copy

AMINZADEH MILAD, MALEKI ZAMENJANI AMIR, AFSHIN HOSSEIN, FIROOZABADI BAHAR. EXPERIMENTAL INVESTIGATION ON RISING OF A SEQUENCE OF DROPS IN A VISCOUS FLUID. JOURNAL OF SOLID AND FLUID MECHANICS[Internet]. 2011;1(1):39-46. Available from: https://sid.ir/paper/212730/en

IEEE: Copy

MILAD AMINZADEH, AMIR MALEKI ZAMENJANI, HOSSEIN AFSHIN, and BAHAR FIROOZABADI, “EXPERIMENTAL INVESTIGATION ON RISING OF A SEQUENCE OF DROPS IN A VISCOUS FLUID,” JOURNAL OF SOLID AND FLUID MECHANICS, vol. 1, no. 1, pp. 39–46, 2011, [Online]. Available: https://sid.ir/paper/212730/en

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