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Showing papers in "Annals of Nuclear Energy in 2016"


Journal ArticleDOI
TL;DR: In this article, the effect of chemical composition on these parameters is investigated in the form of six different glass compositions, which are compared with specialty concrete for nuclear radiation shielding, particularly for dry cask storage.

130 citations


Journal ArticleDOI
Yican Wu1, Yunqing Bai1, Yong Song1, Qunying Huang1, Zhao Zhumin1, Liqin Hu1 
TL;DR: In this paper, the development strategy and conceptual design of China LEAd-based Research Reactor (CLEAR-I) are proposed, and major design principles are oriented at technology feasibility, safety reliability, experiment flexibility and technology continuity.

126 citations


Journal ArticleDOI
TL;DR: High confidence in the MCNP6 code is based on its performance with the verification and validation test suites, comparisons to its predecessor codes, the authors' automated nightly software debugger tests, the underlying high quality nuclear and atomic databases, and significant testing by many beta testers.

111 citations


Journal ArticleDOI
TL;DR: In this paper, a new CFD-aided correlation covering an extended range of Reynolds number 2000-58,000 for Nusselt number and friction factor is proposed to facilitate PCHE designs for the supercritical CO2 Brayton cycle application.

95 citations


Journal ArticleDOI
TL;DR: The purpose of this paper is to bring the methodological description provided in earlier publications up to date, and provide insight into the developed methods and capabilities, including their limitations and known flaws.

73 citations


Journal ArticleDOI
TL;DR: A new major version of the European severe accident integral code ASTEC, developed by IRSN with some GRS support, was delivered in November 2015 and constitutes the back-bone of the CESAM FP7 project, which final objective is to further improve ASTEC for use in Severe Accident Management analysis of the Gen.II–III nuclear power plants presently under operation or foreseen in near future in Europe.

72 citations


Journal ArticleDOI
TL;DR: The magnitude of the artificially diffusive term is numerically investigated and optimized using Fourier analysis and shows that the optimal coefficient increases as the coarse cell optical thickness increases, indicating that the pCMFD method overcorrects the diffusion coefficient which increases the spectral radius.

64 citations


Journal ArticleDOI
TL;DR: In this article, the steady-state thermal performance of a straight-channel printed circuit heat exchanger (PCHE) was analyzed and compared with the experimental data, and the results indicated that the numerical solutions are sufficiently accurate and conservative and that the applicability of the dynamic model proposed for predicting the steadystate and transient performance of the straight channel PCHE has been confirmed.

60 citations


Journal ArticleDOI
TL;DR: In this article, a literature survey on the supercritical water heat transfer researches in order to provide the references for the SCWR researchers is presented, where both the experimental and numerical studies related to the super critical water transfer, especially for nuclear reactor applications, are reviewed.

60 citations


Journal ArticleDOI
TL;DR: In this paper, the authors measured the thermal conductivity of compacted bentonite as a buffer material and investigated its dependence upon various disposal conditions: the dry density, water content, anisotropic structure of the compressed bentonite, and temperature.

56 citations


Journal ArticleDOI
TL;DR: In this article, thermal energy storage integration with light-water cooled and advanced nuclear power plants is analyzed to assess technical feasibility of different options, including molten salts, synthetic heat transfer fluids, and packed beds of solid rocks or ceramics.

Journal ArticleDOI
TL;DR: In this article, the most interesting rare earth nuclides for neutron absorption are studied and compared from the point of view of their possibilities for the control of core reactivity in PWRs to increase the cycle length.

Journal ArticleDOI
TL;DR: In this paper, the COPRA facility was used to investigate the in-vessel molten corium pool behavior for the invessel corium retention during severe accidents in Chinese large-scale advanced PWRs.

Journal ArticleDOI
TL;DR: In this paper, the authors used a capacitance probe to measure the pressure drop and the average void fraction for two-phase flows through porous media, which is a key point to assess the coolability of debris beds resulting from nuclear severe accidents.

Journal ArticleDOI
TL;DR: In this article, the authors deal with nuclear data uncertainty propagation (cross-sections, fission spectrum, neutron multiplicities and fission yields) on the nuclide composition of two UO2 spent fuel samples of different burnup.

Journal ArticleDOI
TL;DR: In this paper, the authors applied principle component analysis (PCA) and Fisher discriminant analysis (FDA) for fault detection and fault isolation in Pakistan Research Reactor-2 (PARR-2) for known faults of control rod withdrawal and external reactivity insertion.

Journal ArticleDOI
TL;DR: In this paper, the authors investigate the sloshing dynamics of liquid in a storage tank, subjected to seismic excitation, and two types of baffles viz., ring and vertical baffle are examined.

Journal ArticleDOI
TL;DR: In this paper, an overall scaled-down IRWST and PRHR HX models are built to simulate the thermal hydraulic process in the residual heat removal accident in the AP1000 plant.

Journal ArticleDOI
TL;DR: In this article, a comparison of results for different methods of uncertainty propagation due to nuclear data for 330 criticality-safety benchmarks is presented, showing that all three methods are globally equivalent for criticality calculations considering the two first moments of a distribution (average and standard deviation).

Journal ArticleDOI
TL;DR: In this article, the Jacobian-free Newton-Krylov (JFNK) method was used to solve the two-phase flow four-equation drift flux model with realistic constitutive correlations.

Journal ArticleDOI
TL;DR: In this article, a systematic CFD validation has been performed and is presented in terms of a comparative evaluation of two different tests in the German THAI and French MISTRA facilities.

Journal ArticleDOI
TL;DR: In this article, the numerical stability of solving the ODEs by using a fourth-order Runge-Kutta scheme is analyzed by a theoretical method in order to increase the time step size to save the computational time.

Journal ArticleDOI
TL;DR: In this paper, the flow characteristics in the impeller passage of a nuclear centrifugal pump model were systematically investigated under steady and transient cavitation conditions, and the results showed that the fluctuations of the radial force on the pump impeller are mainly affected by rotor-stator interaction effects, but are strongly influenced by cavitation under developed Cavitation conditions.

Journal ArticleDOI
TL;DR: In this paper, a large scale COPRA experiment was performed to study the natural convection heat transfer in corium pools inside the reactor pressure vessel lower plenum during severe accidents, where 20 custom-designed heating rods were located in the facility to provide homogenous internal heating.

Journal ArticleDOI
TL;DR: In this article, the critical moderator level was measured for various graphite block configurations in an experimental dry assembly of the LR-0 reactor and the results provided by the different nuclear data libraries are within 3 sigma interval of experimental uncertainties.

Journal ArticleDOI
TL;DR: In this article, a cost-effective heat exchanger for a 20MW FLiNaK-SCO 2 secondary Heat Exchanger in Fluoride salt-cooled high-temperature Reactors was designed.

Journal ArticleDOI
TL;DR: The domain overlapping method was found to achieve convergence at larger integration time steps than the domain decomposition approach and exhibited superior convergence and numerical stability characteristics in both steady state and transient scenarios.

Journal ArticleDOI
TL;DR: In this article, the authors show that the entropy function may lead to a misleading interpretation, and that potential issues occur when spatial correlations induced by fission events are important, and support their analysis by examining the higher-order moments of the entropy functions and the center of mass of the neutron population.

Journal ArticleDOI
TL;DR: In this paper, a 3-dimensional computational fluid dynamic (CFD) simulation of flow and temperature fields in a fast reactor fuel subassembly has been carried out using RANS.

Journal ArticleDOI
TL;DR: The present paper describes the diffusion solver in more details and provides an overview of new features recently implemented, including the use of acceleration techniques and discontinuity factors.