TY - JOUR
TI - Numerical simulation of slip behaviors and friction reduction effects in hydrophobic micro-channel in laminar flow conditions
AU - Dogan Bekir
AU - Ozbey Mustafa
AU - Namli Lutfu
AU - Aybek Unsal
JN - Thermal Science
PY - 2023
VL - 27
IS - 4
SP - 3405
EP - 3411
PT - Article
AB - In the study, a numerical simulation of the sliding properties of the rough  and smooth surfaces with micro-structure was made. The simulation of shear  flow in the micro-channel was performed with ANSYS FLUENT software. The 3-D  and two-phase flow is simulated by choosing the volume of fluid model. In  CFD analysis, water and air consist of two immiscible phases. In the  calculations, if water is the first fluid and air is the second fluid,  adjustments are made. At the beginning of the analysis, the channel was  considered to be completely filled with air and the effect of gravity was  ignored during the calculation. Water and air are considered Newtonian and  incompressible fluids. In addition, laminar flow and steady-state  calculations are made. It was found that the decrease in pressure drop  increased with increasing distance between asperities (no-shear fraction).  In the simulation results, approximately 14% of the velocity in the  micro-channel axis was measured at the interface. The main purpose of this  study is to evaluate the applicability of the volume of fluid model in a  hydrophobic micro-channel flow designed in 3-D using ANSYS Fluent CFD  software.