Numerical Investigation of Startup Instabilities in Parallel-Channel Natural Circulation Boiling Systems

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td align="left">Parameter</td><td align="center">Model-to-Prototype Ratio</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Elevations</td><td align="center">1/4</td></tr><tr><td align="left">Power</td><td align="center">1/2702.6</td></tr><tr><td align="left">Number of fuel rods</td><td align="center">1/663</td></tr><tr><td align="left">Linear heating rate</td><td align="center">2/1</td></tr><tr><td align="left">Core hydraulic diameter</td><td align="center">1/1</td></tr><tr><td align="left">Cross sectional area</td><td align="center">1/1351.3</td></tr><tr><td align="left">Feed flow</td><td align="center">1/2702.6</td></tr><tr><td align="left">Length of links</td><td align="center">1/4</td></tr><tr><td align="left">Number of risers/feeders</td><td align="center">1/51</td></tr><tr><td align="left">Number of downcomers</td><td align="center">1/4</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Model-to-prototype scaling ratios [<a href="/journals/stni/2010/574195/#B10">8</a>].

Science and Technology of Nuclear Installations

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Table 2

Table 2: Numerical Investigation of Startup Instabilities in Parallel-Channel Natural Circulation Boiling Systems 