DIERS Benchmarks
Case 3 Two-phase hybrid Flow Download
DIERS two-phase hybrid flow benchmark is based on the same relief pressure of 72.5 psia but 5 psi is nitrogen and 67.5 psi is the steam. The physical properties of the liquid remain the same but now the physical properties of the nitrogen/steam mixture is based on mixture properties based on partial pressures of each gas.
Case 5 Two-phase high viscosity hybrid flow Download
DIERS two-phase high viscosity hybrid flow is the save as above except the liquid viscosity is based on the equation µ = exp(A + B/ T(oK)), where B = 2959.3 and A = -1.74. The viscosity varies with temperature.
Mach II Nozzle Results & Piping Results
Flowrate (lbs/hr) Choke (psia) Quality (x) Inlet dP / %Pset Outlet dP / %Pset Pipe
Hybrid Flow 88,839 60.1 0.025 --------- ---------- nozzle
87,305 59.1 0.026 0.75 /1.4 6.0 / 11.4 4 X 6
88,364 59.8 0.026 0.23 / 0.44 6.0 / 11.4 6 X 6
DIERS Results Hybrid Flow
RRERSP 98,947 60.9 0.0207 ------ ------- nozzle
RRERSP 94,855 59.8 0.0221 0.7 / 1.3 6.3 / 12.1 4 X 6
RRERSP 96,971 60.3 0.0213 0.1 / 0.2 6.7 / 12.9 6 X 6
Two-phase high viscosity hybrid flow
88,839 60.1 0.025 ------- ------ nozzle
86,494 58.6 0.027 1.0 / 2.0 6.0 / 11.4 4 X 6
88,245 59.7 0.026 0.29 / 0.6 6.0 / 11.4 6 X 6
DIERS Results high viscosity hybrid Flow
RRERSP 96,643 60.9 0.0207 -------- ------- nozzle
RRERSP 91,834 59.5 0.0223 1.0 / 2.0 6.6 / 12.6 4 X 6
RRERSP 93,139 60.2 0.0214 0.3 /0.5 6.8 / 13.1 6 X 6
