Effect of viscosity in speed measurements with double-throat Venturi tubes
This is a 1931 NASA technical report, issued through the NASA Technical Reports Server, on how fluid viscosity affects speed readings taken with double-throat Venturi tubes, written for aeronautical engineers. Its pictures are engineering graphs of a dimensionless coefficient plotted against pressure difference at several temperatures, plus a dimensioned line drawing of a tapered Venturi tube with its throats and tappings; a designer might take from them the restrained, grid-based look of technical charts and the clean outline of a measuring instrument.
