Treatment of Downward Flow

The MCSTDP for the Super LWR is improved to treat the seed assemblies with downward flow. Even though the hot spot is located at the upward flow region, the downward flow region is also affected by the uncertainties of the system parameters. The improved MCSTDP consists of two parts. One is for the upward flow 

Upward/Downward Flow Seed Assembly / Protrusion + Large Guide Tube 

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