Inerting Strategy for a Demonstration-Scale Hot Cell Facility Based on Experiences from Pilot-Scale Argon Cell Facility Operation and CFD Analysis

Table 6

Case of simulation runtime comparison according to time step (auto step vs. manual step; flow rate: 900 CMH).

Contents		99.00%	99.90%	99.95%
		Unit: seconds
Outlet surface volume fraction of argon, average	Auto step	4,086.76	4,715.83	4,957.90
Outlet surface volume fraction of argon, average	Manual step: (0.06)	3,913.20	4,943.16	5,182.50
Deviation		4%	5%	5%
Outlet surface volume fraction of argon, maximum	Auto step	4,055.52	4,593.66	4,637.52
Outlet surface volume fraction of argon, maximum	Manual step: (0.06)	3,888.24	4,864.68	5,065.32
Deviation		4.12%	5.90%	9.22%
Volume fraction of argon (nine points), average	Auto step	3,465.49	4,184.28	5,116.89
Volume fraction of argon (nine points), average	Manual step: (0.06)	3,260.16	4,359.96	4,970.82
Deviation		5.93%	4.20%	2.85%