High Temperature Viscosity Ratios for Neon

Abstract

Capillary flow viscometry measurements were made to determine neon viscosity ratios . η(T)/η(T0). T ranges from 1100 to 2100 °K and T0 is the reference, arbitrarily taken as 283 °K. Results are higher than those of previous workers.

Viscosity of monatomic gases at temperatures up to 5000–6000°K

“…( 4) (the solid lines in the figure) agree well with new, adequately reliable test results throughout the investigated temperature range [5,7,[10][11][12][13][16][17][18][19]. A similar picture is seen for the other monatomlc gases [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Thus, Eq.…”

Ab initiopotential energy curve for the neon atom pair and thermophysical properties for the dilute neon gas. II. Thermophysical properties for low-density neon

“…Slaman [7]; -· -· -· potential by Cybulski and Toczylowski [6]; ----potential by Wüest and Merkt [5]. Stensland [40]; Vogel [29], fitted values; Vogel [29], experimental data corrected according to new helium standard. Calculated values:…”

Erratum

“…This demonstrates that the measurements by Vogel with his all-quartz oscillating-disc viscometer represent the best experiments in this temperature range. The comparison concerning the experimental data by Dawe and Smith [39] and by Guevara and Stensland [40], which result from relative measurements with capillary viscometers based on a reasonable calibration at room temperature, shows that these data should be influenced by systematic errors. Lastly it is concluded that the theoretical determination of viscosity values is to be preferred to experiments at these high temperatures.…”

“…Deviations of experimental and calculated viscosity coefficients from values cal(pres) calculated with the new interatomic potential for Ne at higher temperatures. Experimental data with uncertainties characterized by error bars: 5 Kestin et al [27], best estimate; Hellemans et al [37]; Kestin et al [38]; s Dawe and Smith [39]; oe Guevara and Stensland [40]; i Vogel [29], fitted values; m Vogel [29], experimental data corrected according to new helium standard. Calculated values: Á Á Á Á Á Á Á Á Á fifth-order classical calculation [] cl,5 ; ----potential by Aziz and Slaman [7]; -Á -Á -Á potential by Cybulski and Toczylowski [6]; ----potential by Wu¨est and Merkt [5].…”