Code Manual for CONTAIN 2.0 - Federation of American Scientists

where
Table 4-6
Conservation of Energy Equation for the Coolant Pool in Cell i
dU
Q = qp,in- qp,out- qboil + %q + qp,g ‘qp,ex,so - qp,ex,si + qp,gr,ex - qwk
dt
Up,i = the pool internal energy in cell i;
qp,in = the energy inflow rate, defined by qP,ti = ~ Wji 6jihPj , where the ji sum
includes pool flow paths only and ji
%j = pool specific enthalpy in cell j;
qp,out = the energy outflow rate, qP,Ou~= ~ Wij(lijh,,i , where the ij sum includes
pool flow paths only; i
qboil = energy transfer from pool boiling calculated by the implicit solver, see Whi
in Table 4-3;
qeq = energy transfer rate into the pool as a result of the equilibration of gas flows
into the pool from flow paths submerged under the pool surface, see Section
4.4.7;
‘4P,SI
= energy dissipation rate in the pool from work done by gravity for implicit
processes;
= z gWjieji(HPj -H~i) , where the ji sum extends over pool flow paths
ji
only,
qp,e~,so = energy transfer rate into the pool from explicit processes
= qes,o.t+ qa,dep+ qhs,o.t+ qp,cond + qp,c + qdrop + q p,ha+ q p,ud,so+ q I&q+ q SRV,eq +
%RV,out;
!tes,out = energy transfer rate from effluent routed to the pool as a result
of engineered systems operation, or transferred to the pool
through a liquid transport model, see Chapter 12;
q,,d.p = energy transfer rate from coolant aerosols deposited on the
pool surface, see Section 7.2.3;
Rev O 434 6/30/97