Engineering topics
Publications and source records attributed to Johnson, R. C..
Computer program obtains the real-gas isentropic flow functions and thermodynamic properties of gases for which the equation of state is known. The program uses FORTRAN 4 subroutines which were designed for calculations of nitrogen and helium. These subroutines are easily modified for calculations of other gases.
Venturi meter with separable diffuser and radial outward step at transition from throat to diffuser, noting effect of step on efficiency
Venturi meter with separable diffuser and radial outward step at transition from throat to diffuser, noting effect of step on efficiency
The diffuser and nozzle of venturi meters are made as separate pieces for easier fabrication. Venturi meter efficiency is affected by the diffuser inlet diameter being greater than two percent larger than the throat diameter, by Reynolds number and by Mach number.
Performance of venturi meter with separable diffuser
FORTRAN 4 subroutines for calculating critical flow factor to determine mass flow rate of gaseous helium and nitrogen through critical flow nozzles
Measuring conductive heat flow and thermal conductivity of laminar gas stream in cylindrical plug to simulate atmospheric reentry
Steady-state, stagnation-point, heat transfer rate measuring device