Investigating the microlubrication flow inside the nozzle using computational fluid dynamics
| Autor: | Bhushan T. Patil, Sujata P. Deshmukh, Vasim A. Shaikh, Dipali K. Bhise |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Cutting tool Petroleum engineering Compressed air Mist 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Machining 0103 physical sciences Volume fraction Volume of fluid method Lubrication Environmental science Cutting fluid 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 27:492-496 |
| ISSN: | 2214-7853 |
| Popis: | The rising demand for the sustainable manufacturing processes and the fast-growing price in getting rid of cutting fluids has increased the requirement to find substitute solutions to the conventional metal cutting methods. Green machining is one such technique which uses Microlubrication method using biodegradable metal cutting fluids. Microlubrication uses a very small amount of cutting fluid which ranges between 5 and 150 ml/hr to reduce the friction between a cutting tool and the workpiece. To maintain a controlled machining environment, it is mandatory to use adequate lubrication. Hence, the adequate utilization of Microlubrication for heat extraction and lubrication requires continuous examination of mist. In this paper, Microlubrication flow inside the nozzle is estimated by using Computational Fluid Dynamics (CFD) simulating techniques for air pressures 2 to 4 bars for AccuLube 2000 cutting fluid. In MQL, an aerosol is a mixture of small oil particles dispersed in a compressed air which is applied as cutting fluid. The volume fraction of oil and air in the aerosol is important and affects the heat extraction of the cutting fluid. Hence, it is important to select the accurate proportion of oil and air mixture for getting a better surface finish and tool life. This paper includes investigation of a volume of fraction of oil and air in the fluid volume of the nozzle which helps to enhance the MQL performance. For CFD, multiphase volume of fluid model with realizable k-e viscous model was selected. Simulation results show that, by changing the air pressure from 2 to 4 Bars, the volume fraction of oil decreases by approximately 22 percentage. Hence it has been hypothesized that change in the inlet air pressure directly affects the volume fraction of oil and air. By using low air pressure one can get higher volume fraction of oil which can help to increase the MQL performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect