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Code Manual for CONTAIN 2.0 - Federation of American Scientists

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Table C-3 Validation Matrix <strong>for</strong> Atmosphere Thermal Hydraulics and Intercell Flow Modeling (Continued)<br />

Integral Test Accident Type Reference Nodes <strong>Code</strong> Model Rankin@ Comment<br />

Experiment Facility or Process Version<br />

Simulated Pressure Gas<br />

Mixing<br />

>.<br />

221.1,222.1 WC Long-term Ti196 4, 17 1.12 H M The 17-cell nodalization effectively<br />

LST passive with allowed convection loops resulting in the<br />

facility an elevated overmixing <strong>of</strong> gas. A more restrictive<br />

injection point nodalization scheme prevented some <strong>of</strong><br />

the mixing and gave better results <strong>for</strong><br />

local gas temperatures.<br />

17 1.2 H M-H The overmixing <strong>of</strong> gas below the<br />

injection point was reduced, giving better<br />

agreement with measurements.<br />

219.1 Long-term 4 1.12 H L-M The long-term mixing <strong>of</strong> helium was<br />

passive with underpredicted. Gas mixing was believed<br />

helium to be dominated by gas diffusion which<br />

injected into was not modeled.<br />

the steam<br />

generator<br />

room<br />

Rev. O C-18 6/30/97

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