Simulation and analysis of the residual volume of the drop hitting a cylinder with a rhombus cross section by volume of Fluid method
Subject Areas : Mechanical EngineeringJavad Alishah 1 , Soroush Madah 2 , جواد علی نژاد 3 , yassr rostamiyan 4
1 - , Ph.D. student, Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran
2 - Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran
3 - Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran
4 - Department of Mechanical Engineering, Sari Branch, Islamic Azad University, Sari, Iran
Keywords: cylinder, rhombic cross-section, residual drop volume, volume of Fluid method,
Abstract :
Abstract In this article, the impact of a water drop on a horizontal cylinder with a rhombus cross-section is simulated in three dimensions. The innovation of the present work is to investigate the change in the shape of the division and the remaining volume of the collision of a Newtonian droplet with a rhombic cross-section. For the numerical simulation of this phenomenon, the volume of Fluid method based on the dynamic contact angle has been used to track the fluid-solid interface. To validate the results, the impact of a water drop with a diameter of 2 mm at a speed of 1 m/s on a horizontal pipe with a diameter of 3.18 mm and a deviation of 1.55 from the center has been simulated. The simulated images of drop shape change after impact agree well with the experimental results. Then the impact of drops on cylinders with a rhombus section was investigated. The calculation of the remaining and divided volume of the drop shows that the maximum remaining volume of the drop (2.7522 x 10-9m3) is on the cylinder with a diameter of d= 2.4 mm and speed V= 1m/s and the minimum remaining volume of the drop (0.8391 x 10-9m3) on the cylinder with a diameter of d= 1.6 mm and speed V=2 m/s.
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