Gamma Values for the XML

JM_Sarthak

I intend to simulate molten aluminium flow in DualSPHysics, and am having a hard time finding the exact gamma value for Molten Aluminium. Would anyone know the Gamma value of molten aluminium, or for that matter molten metals , which can be used in DualSPHysics ?!

agavino

Gamma value is the K0' material parameters in the Tait-Murnaghan equation of state. You can further search.

I have found data in the following link ("Thermodynamic properties and equation of state of fcc aluminum
and bcc iron, derived from a lattice vibrational method. Michel H. G. Jacobs. Rainer Schmid-Fetzer), you can find in page 427 values for three different aluminium models that exhibit values from 4.84 to 4.93:
https://www.researchgate.net/publication/227130271_Thermodynamic_properties_and_equation_of_state_of_fcc_aluminum_and_bcc_iron_derived_from_a_lattice_vibrational_method

A snapshot of the link:


Curves reach temperatures of 1000 K, above aluminium melting point (933 K). Look that the behaviour of measurement points in the curves begin to separate beyond the melting point. This means that you have to use these values carefuly and not in high compressive scenarios (pressure casting?).

Good luck!