Computational and experimental investigation of steady state and transient characteristics of molten salt natural circulation loop

Computational fluid dynamics analysis of the natural circulation system in vertical heater horizontal cooler (VHHC) molten salt loop

“…In this case, that makes it easier for users to enter models, constants, initial conditions, boundary conditions, and other physical parameters to simulate and complete various physics and engineering applications. In this study, COMSOL Multiphysics software was used to simulate the natural circulation loop of molten salt based on the parameters obtained from the experimental results carried out in papers [15] and [16]. In this case, the finite element method used COMSOL Multiphysics software was utilised to solve differential equations governing fluid dynamics and heat transfer in the fluid.…”

“…Table 1. Constants in equation ( 6) to evaluate the thermophysical properties of molten salt [15,16] No The construction of geometry as input in computational fluid dynamics modelling refers to the molten salt natural circulation loop model designed in the experiments that have been carried out in the paper [15], as shown in figure 1. The natural circulation experimental facility is a rectangular loop composed of pipes with 13.88 mm inner diameter and 21.34 mm outside diameter.…”

“…Paper [14] discussed experimentally and modelling the instability of NCL with a working fluid in the form of Lead Bismuth Eutectic (LBE). Paper [15] and [16] studied the steady-state and transient characteristics of single-phase natural circulation loops with molten salt as working fluid computationally and experimentally.…”

“…Motivated from the above description, in this paper, we studied the transient and steady-state of the natural circulation system in the molten salt loop with vertical heater and horizontal cooler using computational fluid dynamics. This paper discussed computational fluid dynamic modelling from experimental results carried out in papers [15] and [16].…”

Experimental and simulation approach of the loop geometry effect on the natural circulation system of the advanced nuclear reactor

“…The study of natural circulation that utilized molten salt as a working fluid has been carried out by several researchers. The work in papers 24,25 utilized molten nitrate salt consisted of a mixture of NaNO 3 and KNO 3 at a ratio of 60:40 as the working fluid in the natural circulation loop (NCL) with vertical heater and horizontal cooler. Paper 26 utilized molten nitrate salt consisted of a mixture of KNO 3 ‐NaNO 2 ‐NaNO 3 with a ratio of 53‐40‐7 wt% as the working fluid in the NCL with double heat exchangers.…”