Computational investigation of the dynamic response of a supercritical natural circulation loop to aperiodic and periodic excitations

Tilak, Abhilash K.; Basu, Debabrata

doi:10.1016/j.nucengdes.2014.12.028

Cited by 15 publications

(1 citation statement)

References 22 publications

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“…According to Chen et al [25], numerical modeling of supercritical CO 2 revealed a shift from unstable repetitive-reversal flow to stable one-directional flow at a crucial heat source temperature near the pseudocritical temperature. Abhilash et al in 2015 [26], reported the dynamic response of the SCNCL using power upsurge or downsurge. Power upsurge increases initial instability in the system, characterized by more significant amplitude variations.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Effect of Geometry and Operating Variables on Density Wave Oscillation in a Supercritical Natural Circulation Loop

et al. 2022

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Nowadays, a prime technology in generation IV nuclear reactors, the supercritical water reactor (SCWR), is the main object of focus. The current article aims to develop a thermal hydraulic numerical model for predicting density wave oscillation (DWO) in a supercritical water natural circulation loop (SCWNCL). A one-dimensional thermal hydraulic mathematical model was developed. The numerical model consists of nonlinear mass, momentum, and energy conservation equations, which were discretized by applying the implicit finite difference technique. The numerical model was validated with experimental results, and numerical simulations were carried out to find the marginal stability boundary (MSB) and draw the stability map for the loop. Further, the effects of geometry (i.e., diameter and hot leg length) and operating parameters (i.e., inlet system pressure and friction factor) on the density wave oscillation of the SCWNCL were analyzed.

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Section: Introductionmentioning

confidence: 99%