Computation of the Heat Exchange Coefficient in Cylindrical Coordinates Mathematical Modelling of Castings Solidification
Journal Title: RECENT - Year 2012, Vol 13, Issue 36
Abstract
The paper discusses the advantages of utilizing cylindrical coordinates in the mathematical modelling of the solidification of castings with rotational symmetry. In this case the mould - casting assembly is divided into elementary rings. It is shown that for elementary rings undergoing solidification the equivalent thermal conductibility coefficient is influenced by the direction of motion of the solidification front. The paper presents study results concerning this influence. Further study concerned the influence of ring radius and thickness on this coefficient. Eventually a working methodology is established for developing mathematical models considering these aspects.
Authors and Affiliations
Ionuţ IONESCU, Daniela IONESCU, Ioan CIOBANU, Vasile JIMAN
Keywords
Related Articles
- EP ID EP92987
- DOI -
- Views 80
- Downloads 0
Research on X 42 and X 52 Steel Weldability by MAG-STT Procedure
This paper presents research into the use of MIG-MAG welding in STT version (surface tension transfer) in the welding of root layers. The aim for researching this aspect is to increase the range of applications of the ST...
Energy Simulation of a Solar Thermal System for Domestic Hot Water and Space Heating
Analyzing the use opportunity of solar heating systems is based on factors such as necessary heat load, solar energy available to the location where it is implemented, auxiliary power capacity, cost of investment and its...
Pneumatic Driving in Material Handling Systems
Pneumatics is one of the most used systems in these days. Today equipment and system use this type of actuating because it is a very safe, economic and ease to implement. Another advantage that recommends this type of ac...
Α Parameter Design in Turning of Copper Alloy
An optimization of the cutting parameters during turning of a copper alloy (GC-CuSn12) using the Taguchi design is attempted. Test specimens in the form of near-to-net-shape bars and a titanium nitride coated cemented ca...
Modelling and Simulating the Pressing Process of Iron Powders with Different Particle Sizes
This paper brings into focus new modelling features in the context of pressing process of iron powders with different particle sizes. The study is focused on the evolution of green density function of the pressing speed,...