Cross-flow between identical subchannels caused by a severe blockage

Gençay, S.; Tapucu, A.

doi:10.1016/0029-5493(91)90038-j

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…The lateral velocity occurs periodically around the gap without the help of an additional mechanical device and this eventually develops into pulsating flow. The occurrence of pulsating flow due to the gap could be observed from the flow phenomena in the narrow area between the rods which make the sub-channel in the fuel rod bundle assembly of nuclear reactor, and this causes strong flow mixing within the sub-channel [1,2]. The narrow area between the rods is commonly referred to as narrow flow passage or gap.…”

Section: Introductionmentioning

confidence: 98%

Turbulent heat transfer characteristics in compound channels with gap

et al. 2011

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To examine the characteristics of turbulent flow and heat transfer about the compound channel with gap, the present study has performed a numerical analysis by using large eddy simulation (LES). Our first aim was to analyze the cause of pulsating flow by investigating the turbulent flow through the unsteady analysis of compound channel. Next, to understand the correlations between gap width and heat transfer enhancement, we tried to verify the enhancement effect of heat transfer when a gap exists within the compound channel. From this numerical analysis, we could see that the lateral velocity occurs periodically around the gap and this is developed in the pulsating flow. The pulsating flow has generated a strong turbulent flow mixing within the compound channel. And the turbulent flow mixing in the pulsating flow plays an effective role of enhancing heat transfer effect by making the fluid temperature uniformly within the compound channel.

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Section: Introductionmentioning

confidence: 98%