Salawu, Enesi Y. and Ajayi, O. O. and Inegbenebor, A.O. (2019) TURBULENCE FLOW SIMULATION OF MOLTEN METALS IN RUNNERS FOR DEFECT CONTROL IN CASTING OF A SPUR GEAR BLANK. International Journal of Mechanical Engineering and Technology, 10 (1). pp. 1921-1933. ISSN 0976-6359
![[img]](http://eprints.covenantuniversity.edu.ng/style/images/fileicons/application_pdf.png) |
PDF
Download (654kB) |
Abstract
The study investigates the effects of turbulence flow of molten metal on the walls of the runner and the mould cavity during pouring via simulation approach. Effects of temperature, solidification time, shrinkage porosity, thermal modulus, hot spot formation and interfacial heat transfer coefficient were simulated under turbulent flow condition. Turbulence kinetics and flow properties which include velocity and viscosity were equally simulated. The result of temperature simulation showed an ideal variation of temperature distribution during flow and in the cavity. Molten metal at liquid state was observed to vary from 654.7-636.0 oC and became solid at 473.3- 492.0 oC for a total simulation time of 169.5838 seconds. Consequently, at higher pouring temperature, diffusion of heat into the walls of the mould will occur due to the momentum of flow thereby leading to erosion of the mould content. In addition to this, velocity and viscosity of the molten metal was found to have effect on the turbulent kinetics. Thus, this simulation technique will help the foundry industry in improving the gating system design by studying the defects associated with turbulence flow and incorporating filters to remove the inclusions in the gating system.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Spur gear, Production, Failure Analysis, Turbulence |
| Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery |
| Divisions: | UNSPECIFIED |
| Depositing User: | Mrs Hannah Akinwumi |
| Date Deposited: | 27 Oct 2021 09:07 |
| Last Modified: | 27 Oct 2021 09:07 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/15401 |
Actions (login required)
 |
View Item |
