04.01.2013 Views

Simulation of Criticality Accident Transients in Uranyl Nitrate ...

Simulation of Criticality Accident Transients in Uranyl Nitrate ...

Simulation of Criticality Accident Transients in Uranyl Nitrate ...

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Neutron K<strong>in</strong>etics Balance<br />

dP<br />

dt<br />

�t� ��t<br />

�<br />

�<br />

Delayed Neutron Precursor Concentration<br />

�t� Nuclear Eng<strong>in</strong>eer<strong>in</strong>g<br />

� �<br />

�<br />

eff<br />

P<br />

dCi<br />

�i<br />

� n �i<br />

dt �<br />

Reactivity<br />

Po<strong>in</strong>t K<strong>in</strong>etics<br />

6<br />

�t� � � C �t� �<br />

i�1<br />

�t� � C �t� i<br />

i<br />

i<br />

�1:<br />

�t� � � � �t� ��<br />

�T<br />

��<br />

�V<br />

� 0<br />

T<br />

V<br />

�<br />

k<br />

temperature<br />

void volume<br />

�<br />

�<br />

�k<br />

�<br />

ramp T V<br />

i<br />

6<br />

P<br />

�<br />

�<br />

Ci<br />

�<br />

ANS W<strong>in</strong>ter Conference 2012 San Diego<br />

i<br />

�<br />

�<br />

i<br />

eff<br />

fission rate (fission/s)<br />

reactivity<br />

mean neutron generation time (s)<br />

DNP concentration (neutrons/m 3 )<br />

decay constant (1/s)<br />

delayed neutron fraction<br />

�<br />

6<br />

�<br />

i�1<br />

�<br />

i<br />

University <strong>of</strong> Tennessee (6)

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!