ANALYSIS OF FLOW IN INJECTION MOLDS, THE DERIVATION OF THE GOVERNING EQUATIONS FOR THE MATHEMATICAL MODELLING OF THE FLOW OF POLYMER MELT

Abdülmecit GÜLDAŞ, Onuralp ULUER, Ahmet ÖZDEMİR
1.718 467

Abstract


ABSTRACT

In the injection molds, the governing equations that describe the flow front of a polymer melt and form of the pressure, velocity and temperature distribution have been derived for the mathematical modeling. The continuity, the momentum and the energy equations derived from different methods in the literature wereobtained in detail and they were prepared as a set on which the solving methods of differential equations can be applied. In discretization process using Finite Control Volume, Full Implicit and Upwind methods were used. For two dimensional cavity, variations of density were calculated using Boussinesq Approach by Phoneics program. Filling simulation in the cavity were achieved. In addition, solid layer was determined by Darc’y method.


Keywords


Key Words: Injection molding, Flow analysis and simulation, Melt flow, Finite control volume method

Full Text:

PDF