Evaluation of Microgravity Heat Conductivity Measurements with FLUENT System

Viktor Bánhidi

doi:10.4028/www.scientific.net/MSF.589.287

Paper Titles

The Examination of Weld Line Properties in Injection Molded PP Composites
p.263

Preparation of MWCNT/Carbon Fabric Reinforced Hybrid Nanocomposite and Examination of its Mechanical Properties
p.269

A New Technique for Characterization of Residual Stresses in Glass Surfaces: Scratch Test Completed with Image Analysis
p.275

Investigation of Time-Dependent Behavior of Starch-Based, Injection Molded Biodegradable Polymer
p.281

Evaluation of Microgravity Heat Conductivity Measurements with FLUENT System
p.287

Equations and Verification of New Diffusion Parameters
p.293

Transformation of Temperature and Time Diagrams Constructed by Different Time Intervals Applying the Newton Formula
p.299

The Effect of a Rotating Magnetic Field on the Solidification of A356 Alloy Modified by Strontium
p.305

Computer Aided Measuring of Textile-Mechanical Parameters
p.311

HomeMaterials Science ForumMaterials Science Forum Vol. 589Evaluation of Microgravity Heat Conductivity...

Evaluation of Microgravity Heat Conductivity Measurements with FLUENT System

Abstract:

Microgravity experiments were executed to measure the convection free, pure heat conductivity and heat diffusivity parameters in molten metals. The application of well known numerical methods to evaluate the data collected under low gravity conditions was only partially successful. None of the methods (Crank-Nicolson, error function fitting or simple FEM model) could be used over the whole measured temperature range. The purpose of this work was to alleviate the previously experienced problems by using a commercially available finite value method package on high performance computers, to simulate the coupled thermal and fluid mechanical model in order to accurately determine the heat transport properties of Ga, Sn-Bi, Sn and Zn melts, and by incorporating device geometry data, compare the results to the values gathered from short time microgravity experiments.