Dynamic Shear Stress and Heat Transfer of Solid Hydrogen, Deuterium, and Neon

Abstract

Solidifying and solid cryogens in steady shear are of fundamental importance to the fueling of fusion energy reactors. We present steady-state measurements of the dynamic shear stress, thermal-conductivity, and heat transfer during flow of solid hydrogen, deuterium, and neon in a Couette-type viscometer cell. The measurements span a range of shear rates and temperatures from the onset of solidification to sub-cooled solid states. Normalization of the shear stress with parameters of the Lennard-Jones 6-12 potential indicates a favorable prediction of tritium properties using the quantum law of corresponding states.