Temperature Distribution in the Duct Wall and at the Exit of a 19-Rod Simulated LMFBR Fuel Assembly (FFM Bundle 2A)

Fontana, Mario; MacPherson, R.E.; Gnadt, P.A.; Parsly, L.F.; Wantland, J.L.

doi:10.13182/nt74-a31474

Cited by 44 publications

(14 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure shows the sub‐channel configuration of the test assembly. Tables and present the geometry parameters and test conditions, respectively …”

Section: Resultsmentioning

confidence: 99%

“…The test assembly is in hexagon arrangement and contains 19 heating rods.Figure 3shows the sub-channel configuration of the test assembly. Tables 4 and 5 present the geometry parameters and test conditions, respectively [22][23][24][25]. Figures 4 and 5 present the comparisons to experiment data and calculation results by MATRA code developed for wire-wrapped LMR subassembly analysis by Kim et al…”

mentioning

confidence: 99%

See 1 more Smart Citation

Sub-channel analysis for Pb-Bi-cooled direct contact boiling water fast reactor

et al. 2018

View full text Add to dashboard Cite

Summary Pb‐Bi‐cooled direct contact boiling water fast reactor (PBWFR) featured with a direct‐contact heat exchanger between lead‐bismuth eutectic coolant and water could significantly simplify the primary system and enhance the natural circulation capability, meeting the potential needs for small modular reactor design. It is of great importance to conduct thermal‐hydraulic analysis of the PBWFR core in detail. In this paper, a self‐developed SUB‐channel AnalysiS code SUBAS is adopted to study the thermal hydraulic characteristics of the PBWFR core. The fidelity and the reliability of the code have been preliminarily benchmarked. With SUBAS, the space grid is studied to figure out its impact on the temperature and flow distributions in each sub‐channel. Besides, the application of space grids would increase the pressure drops and decreases the cross flow between adjacent sub‐channels. To study the transient performance of the PBWFR core, the power transient and the inlet blockage accident are calculated by SUBAS. The results of the power transient show the cross‐flow effect would be weakened in the sub‐channel which has higher coolant temperature and larger mass flow rate. For the inlet blockage accident, the results indicate the influence of the small area blockage is relatively weak on the overall performance of the assembly but is significant on the local parameters. With consideration of time and space, the blockage influence only exists in a certain area. This research may provide contribution to the design of PBWFR.

show abstract

“…Figure shows the sub‐channel configuration of the test assembly. Tables and present the geometry parameters and test conditions, respectively …”

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Sub-channel analysis for Pb-Bi-cooled direct contact boiling water fast reactor

et al. 2018

View full text Add to dashboard Cite

show abstract

“…This has been observed; in water experiments in rod bundles for four-channel 1 * and for ?lx-and for 24-channel planar blockages. 1 * Kirsch and Schleislek 30 made the rather startling prediction that flow recirculation in Che separated flow zone behind a blockage would safely remove the heat generated behind a blockage extending to more than 40% of the total full-scale SMR Na-2 reactor bundle flow area. They investigated this effect with sodium flowing in an obstructed annulus having one wall shaped to loosely simulate fuel rods.…”

Section: Flow In the Wake Zone Behind Blockagesmentioning

confidence: 99%

Effect of partial blockages in simulated LMFBR fuel assemblies

Fontana¹,

Gnadt²,

Kress³

et al. 1973

View full text Add to dashboard Cite

“…A lot of experimental [1][2][3] as well as numerical works have been performed for a flow field and heat transfer characteristic analysis in fuel assemblies. Most of the numerical works have been carried out using simplified analysis methods, such as those based on a subchannel analysis approach 4) and a porous body model.…”

Section: Introductionmentioning

confidence: 99%