Thermalhydraulic Investigations of a Horizontal Rod Bundle Target at High-Powers During Operation
NURETH-14 - 2011 September 25-30

Presented at:
2011 September 25-30
Toronto, Canada
Session Title:
B3-4 Core Thermalhydraulics and Subchannel Analysis

Rade Milenkovic (Paul Scherrer Institut)
Sergejs Dementjevs (Paul Scherrer Institut)


In order to understand the complex hydraulic, thermal and structural behavior of the rodbundle

target of the Swiss Spallation Neutron Source-SINQ at PSI during operation at high

powers, a well-controlled experiment has been conducted by increasing the proton beam

current in stops, permitting steady state heat transfer conditions to be reached at different

power levels. During the experiment, the total mass flow rate, the pressure loss in the target,

temperatures at various locations, pressures at the inlet and outlet of the target and structural

acceleration of the target head were acquired at various powers (i.e. steady-state conditions).

Experimental data are used as benchmark boundary conditions for coupled thermal-structural

analysis with the aim to evaluate and indentify reliable operating conditions.

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