Na-HPMR Multiphysics Results

Multiphysics analysis was completed in the 1/6 core HP-MR model for the steady state operation of the Na-HPMR by coupling the Griffin high-fidelity neutronics with CFEM-SN(1,3) neutronics solver, the BISON heat conduction model, and the Sockeye heat-pipe performance model. In this section, the simulation results are discussed.

Steady State Results

Figure 1: Steady state operation conditions as predicted by the Na-HPMR multiphysics model.

At the nominal power of ~2.07 MW, the Griffin-BISON-Sockeye model predicts the steady state operating conditions shown in Figure 1 with key parameters summarized in Table 1

Table 1: Key Na-HPMR operating parameters at steady state at nominal power

Parameter	Unit	Value
Thermal Power (1/6 core)	kW	345.6
Avg. Fuel Temperature	K	939.6
Max. Fuel Temperature	K	964.3
Min. Fuel Temperature	K	914.4
Avg. Moderator Temperature	K	937.4
Max. Moderator Temperature	K	959.1
Min. Moderator Temperature	K	910.5
	n/a	1.055887