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ID 423

Spreading Dynamics of Nanofluid Droplets Impact on Solid Surface

Hai Long Liu
Jiangsu University
China

Xuefeng Shen
Jiangsu University
China

Yuanping Huo
Jiangsu University
China

Junfeng Wang
Jiangsu University
China

 

Abstract:

The nanofluid is a class of fluids with high thermal conductivity and non-Newtonian flow behaviors. In this work, we conducted experimental and numerical studies on the transient spreading behaviors of nanofluid droplets containing multiwall carbon nanotube (MWCNT) and nano-graphene additives on a solid surface. The high-speed camera visualization was used to capture the spreading phenomenon experimentally. To capture the interface movement, the finite-element based scheme coupled with level set method has been employed. The shear thinning properties of those nanofluids were measured with rotational rheometer and analyzed by employing Carreau-Yasuda model. The dynamic contact angle (DCA) and transient relative height along with the spreading time of droplets under different Weber numbers (We) were investigated through post-image processing.