A coolant flow simulation in fast reactor wire-wrapped assembly

Volkov, V. Yu.; Belova, O. V.; Krutikov, A. A.; Skibin, A. P.

doi:10.1134/s0040601513060116

Cited by 9 publications

(3 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Volkov et al found that using high-Reynolds k-ε turbulence model to simulate the flow in the fuel pin bundle could reduce the dimension of the computational mesh. The results are in good agreement with the empirical dependences and international calculations [6]. Talebi et al conducted a parameter research of the Reynolds number, inlet temperature and heat flux on the fluid flow, and heat transfer inside the sub-channel with a CFD code that solves the algorithm [7].…”

Section: Introductionsupporting

confidence: 72%

Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR

et al. 2022

View full text Add to dashboard Cite

Sodium-cooled reactors (SFR) have always been recognized as one of the most promising candidates for the fourth-generation nuclear systems as announced by the Generation-IV International Forum. In the design of SFR, helical wire-wrapped rod is applied to stabilize the structure of the rod bundle and enhance coolant mixing. Although there has been considerable research on SFR in computational fluid dynamics (CFD), the phenomenon of heat transfer has rarely been paid attention to. This article discovered that there exists reversed heat flux from coolant to wrapped wire, which is contrary to our usual understanding. This phenomenon has not been reported in previous CFD calculations. Hence, a solid heat conduction model is proposed to prove this phenomenon and analyze the heat transfer process. The simulation results show that the wrapping wire embedding depth, the shape of the calculation domain and the physical properties of all components have great influence on the magnitude of the reversed heat flux. The present findings will have strong influence on the temperature field and maximum value of the fuel rod as well as profound reference value for future flow calculation, especially in grid generation and treatment of the junction between the winding wire and fuel rod.

show abstract

Section: Introductionsupporting

confidence: 72%

Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Unfortunately, further information on the numerical scheme and the used wall functions is not given. Volkov et al (2013) reported for the k-ε model a discrepancy in the pressure loss of about 10% between wall function and wall resolved formulation. Mikuž and Shams (2019) reported similar observations for bare rod bundle flow similar to Configuration 1 of section 3.2.…”

Section: Quantitative Comparison Of Pressure Lossesmentioning

confidence: 97%

Investigation of pressure loss and velocity distribution in fuel assemblies with wire-wrapped rods by using RANS and LES with wall functions

Bieder

Uitslag-Doolaard

Mikuž

2021

Annals of Nuclear Energy

View full text Add to dashboard Cite

“…After starting the vacuum pump and opening the valves in the inlet VE2, VE4, the chamber is pumped down and the elastic membrane is bent due to the pressure difference between vacuum and hydraulic compartments. At the same time, the control hydraulic valve VE5 is opened in the upper part of the chamber, the liquid enters the chamber under the effect of pressure difference [6]. Valves VE, VE3, VE6 are closed at this time.…”

Section: Description Of the System Design For Which The Calculation Mmentioning

confidence: 99%

Development of calculation method of main parameters of vacuum liquid transportation system

Demikhov

Ochkov

Gordeeva

2018

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

View the article online for updates and enhancements. Related contentVacuum pumping system for the multiaperture low-energy continuously-operated electron accelerator with a high-density beam current A G Ivanov, D A Karpov, S L Kosogorov et al. Abstract. The design of a vacuum pumping system based on the principle of the displacement membrane was proposed. This principle does not imply contact of the working metal surfaces with the transported liquid. This article presents a calculation method of the main parameters of the proposed vacuum fluid transportation system. As a result of the calculation, the values of the pumping speed, the dimensions of the displacement membrane, the required chamber height, the pressure drop in the chamber, required to ensure the deflection of the displacement membrane, were obtained. Based on the proposed method, a program for calculation the main parameters of a liquid transfer system based on the mathematical software MathCAD was developed.

show abstract

A coolant flow simulation in fast reactor wire-wrapped assembly

Cited by 9 publications

References 1 publication

Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR

Numerical Investigation of Special Heat Transfer Phenomenon in Wire-Wrapped Fuel Rod of SFR

Investigation of pressure loss and velocity distribution in fuel assemblies with wire-wrapped rods by using RANS and LES with wall functions

Development of calculation method of main parameters of vacuum liquid transportation system

Contact Info

Product

Resources

About