EXPERIMENTAL STUDY OF CONTACT VELOCITY EFFECT ON SPREADING FACTOR OF NON-NEWTONIAN AND NEWTONIAN DROPLETS DURING COLLISION WITH DRY SOLID SURFACE

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SHEYKHIAN MOHAMMAD KAZEM; NOROUZI MAHMOOD; SHAHMARDAN MOHAMMAD MOHSEN

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Journal: Modares Mechanical Engineering Year:2018 | Volume:18 | Issue:3 Page(s): 146-152

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Title

EXPERIMENTAL STUDY OF CONTACT VELOCITY EFFECT ON SPREADING FACTOR OF NON-NEWTONIAN AND NEWTONIAN DROPLETS DURING COLLISION WITH DRY SOLID SURFACE

Author(s)

SHEYKHIAN MOHAMMAD KAZEM | NOROUZI MAHMOOD | SHAHMARDAN MOHAMMAD MOHSEN | Issue Writer Certificate

Keywords

CONTACT VELOCITYQ1

NON-NEWTONIAN FLUID OF BOGERQ1

SPREADING FACTORQ1

VISCOSITYQ1

Abstract

The collision of droplets on solid surfaces is widely used in oil and gas industry, surface painting, hot surface cooling and spraying of agricultural products. In the present study, the SPREADING FACTOR of Boger non-Newtonian fluid is experimentally investigated on the dry solid surface such as an acrylic (Plexiglas) and stainless steel sheet and is compared with Newtonian droplets (water and glycerin). The plates of Plexiglas and stainless steel both have a hydrophilic surface. In this research, the Newtonian and non-Newtonian fluids droplets collapse at two heights of 27 and 47 cm from the dry solid surface and are examined in the range of Weber numbers245£We£538. The purpose of this study is to investigate the effects of CONTACT VELOCITY on the SPREADING FACTOR of non-Newtonian and Newtonian droplets during the collision. The results of this study show that with the growth of Weber number (increasing CONTACT VELOCITY), the maximum value and velocity of spreading and receding are increased for the Newtonian or non-Newtonian droplets. Also, with increasing the VISCOSITY of droplets, the value and velocity of spreading and receding are decreased for the Newtonian and non-Newtonian droplets. By increasing the velocity of collision on the Plexiglasas surface (raising the Weber number) up to 32%, the maximum value of droplets spreading is increased 22, 31 and 20 percentage respectively for the fluids of Boger, water and glycerin.

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APA: Copy

SHEYKHIAN, MOHAMMAD KAZEM, NOROUZI, MAHMOOD, & SHAHMARDAN, MOHAMMAD MOHSEN. (2018). EXPERIMENTAL STUDY OF CONTACT VELOCITY EFFECT ON SPREADING FACTOR OF NON-NEWTONIAN AND NEWTONIAN DROPLETS DURING COLLISION WITH DRY SOLID SURFACE. MODARES MECHANICAL ENGINEERING, 18(3 ), 146-152. SID. https://sid.ir/paper/178948/en

Vancouver: Copy

SHEYKHIAN MOHAMMAD KAZEM, NOROUZI MAHMOOD, SHAHMARDAN MOHAMMAD MOHSEN. EXPERIMENTAL STUDY OF CONTACT VELOCITY EFFECT ON SPREADING FACTOR OF NON-NEWTONIAN AND NEWTONIAN DROPLETS DURING COLLISION WITH DRY SOLID SURFACE. MODARES MECHANICAL ENGINEERING[Internet]. 2018;18(3 ):146-152. Available from: https://sid.ir/paper/178948/en

IEEE: Copy

MOHAMMAD KAZEM SHEYKHIAN, MAHMOOD NOROUZI, and MOHAMMAD MOHSEN SHAHMARDAN, “EXPERIMENTAL STUDY OF CONTACT VELOCITY EFFECT ON SPREADING FACTOR OF NON-NEWTONIAN AND NEWTONIAN DROPLETS DURING COLLISION WITH DRY SOLID SURFACE,” MODARES MECHANICAL ENGINEERING, vol. 18, no. 3 , pp. 146–152, 2018, [Online]. Available: https://sid.ir/paper/178948/en

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