Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.
The Transient Hot Wire method is well established as the
most accurate, reliable and robust technique for evaluating the
thermal conductivity of fluids and solids. Unfortunately its
direct application to dual-phase systems such as solid
suspensions in fluids or porous media cannot be supported by
the very principles and methodology underlying this method.
The derivation of possible ways of rendering the transient hot
wire method to dual-phase applications including the
development of validity criteria for such applications is
proposed and discussed.