Heat Transfer and Solidification Analysis Using Adaptive Resolution Particle Method

Abstract

Finer calculation elements (meshes) are required to conduct an accurate solidification simulation for castings with thin sections. Calculation methods using non-structural meshes can keep its efficiency even for complex shaped castings, because the methods can use adaptive mesh size for parts with various size and regions around interfaces. However, methods using non-structural mesh tend to have difficulty in mesh generation and complexed calculation program. In this study, we conducted heat transfer and solidification simulation using an adaptive resolution particle method (ARPM), which uses various kind of element size as adaptive resolution method with simple calculation program similar to the method using structural meshes. As a result, the ARPM showed good accuracy of solidification simulation and improve its efficiency of the computational time and the memory usage, slightly reducing an energy conservation quality.

Sand-sodium-silicate mixtures structured in steam-microwave environment effective values of thermo-physical properties

“…These mixtures properties include: specifi c heat (с 2 ), thermal conductivity ( 2 ), thermal diff usivity (а 2 ), heat storage capacity (b 2 ) and specifi c density ( 2 ). These parameters have been widely used in analytical calculations and computer modeling of casting solidifi cation processes [9,10], in cast parts quality and material properties prediction [11,12], etc. At the same time, such forecasts accuracy largely depends on adequacy of casting molds and cores material thermo-physical parameters used values.…”