Helium Research Center internal report

By R.A. Guereca

Subjects: Helium, Viscosimeter

Description: An analysis to determine criteria for steady-state, laminar flow boundary conditions for a coiled-tube gas viscosimeter is made by comparing experimental data from thick-walled, stainless steel capillary in a horizontal, straight-tube condition with similar data taken after the same capillary was formed into a helix. Overlapping volumetric flowrates and pressure drops are covered for both configurations at pressure levels of 28, 225, and 1,000 psia at 300℗ʻ K. Friction factor, Reynolds number, and Dean number correlation plots show conditions where the coiled-tube flow deviates from straight-tube flow...