Some thermal hydraulic challenges in sodium cooled fast reactors

Status of CATHARE code for sodium cooled fast reactors

A novel domain overlapping strategy for the multiscale coupling of CFD with 1D system codes with applications to transient flows

System–CFD coupled simulations of flow instability in steam generator U tubes

Development of the plant dynamics analysis code NETFLOW

Heat transfer in heat exchangers of sodium cooled fast reactor systems

Stability of single-phase natural-circulation flows in steam generator U tubes

This paper describes a thermal-hydraulic calculation of an intermediate heat exchanger (IHX) with the computational fluid dynamics (CFD) code CFX. The motivation of this paper is to clarify a heat transfer degradation phenomenon in the IHX through three-dimensional calculation. The whole IHX of the “Monju” reactor is modeled with three parts, i.e., the primary side, the secondary side and the heat transfer region. Through a partial calculation using these models, the flows on the primary side and the secondary side are shown to be axisymmetric. Therefore, a sector model is adopted for the calculation model in the heat transfer region. The calculated temperatures in the IHX are compared with the measured results using the IHX in the “Monju” reactor. Good agreement is obtained for the predicted outlet temperatures and temperatures on the shell surface. As a result of the CFD calculation, it is evaluated that a heat transfer in the lower plenum on the secondary side is dominant under the low flow rate condit...

https://www.tandfonline.com/doi/pdf/10.1080/00223131.2015.1006704

Masahito Takano

Papers

Heat transfer in heat exchangers of sodium cooled fast reactor systems

System–CFD coupled simulations of flow instability in steam generator U tubes

Stability of single-phase natural-circulation flows in steam generator U tubes

A thermal hydraulic calculation method of an intermediate heat exchanger of a loop type FBR

Experimental and analytical studies on heat transfer in a scaled intermediate heat exchanger with water