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Showing papers in "Nuclear Engineering and Design in 2017"


Journal ArticleDOI
TL;DR: In this paper, the impact of alloying elements on the material properties of Zirconium-based claddings has been systematically presented, including the impact on coating layer on the surface of Zr-based alloys, mainly referring coating materials and fabrication methods.

214 citations


Journal ArticleDOI
TL;DR: In this article, a dependence assessment model based on D numbers and analytic hierarchy process (AHP) is proposed to assess the dependence degree of human errors in HRA which inherently has a linguistic assessment process.

103 citations


Journal ArticleDOI
TL;DR: In this article, the influence of airfoil profile on flow and heat transfer performance of printed circuit heat exchanger (PCHE) in supercritical carbon dioxide (S-CO 2 ) Brayton cycle is investigated.

78 citations


Journal ArticleDOI
TL;DR: In this article, a BP neural network predictive model has been built for the determination of supercritical water heat transfer coefficient using 14 groups of experimental data have been collected for determining the heat transfer coefficients within the scope of super critical water pressure.

78 citations


Journal ArticleDOI
TL;DR: In this article, a detailed flow visualization study is performed using a high-speed video camera in a wide range of two-phase flow conditions to verify previous flow regime maps, and three additional test conditions are determined in horizontal bubbly flow to extend the database by Talley et al.

70 citations


Journal ArticleDOI
TL;DR: In this article, the authors investigated the radiation shielding properties of two types of high strength concrete reinforced with basalt fibers infused with 12-20% boron oxide, containing varying fractions of natural and enriched borson.

68 citations


Journal ArticleDOI
TL;DR: In this article, different fragility analysis methods are described and their advantages and disadvantages are discussed: (i) the safety factor method, in which the fragility curve is estimated based on safety margins with respect on an existing deterministic design; (ii) regression analysis or (iii) maximum likelihood estimation from a set of nonlinear time history analysis at different seismic levels; (iv) the incremental dynamic analysis method where the set of accelerograms is scaled until failure.

65 citations


Journal ArticleDOI
TL;DR: In this paper, the response of a wire-mesh sensor to the passage of small bubbles is studied and a significant deviation from the linear dependency between the received current and the local instantaneous gas fraction is found, which can be described by the average conductivity of an emulsion according to Maxwell.

53 citations


Journal ArticleDOI
B.H. Yan1
TL;DR: In this article, the nuclear reactor thermal hydraulic research in ocean motions was systematically summarized and experimental data were analyzed and classified, and the inherent mechanism for controversial issues in different experiments was explained.

48 citations


Journal ArticleDOI
TL;DR: In this article, the efficiency of a local aquatic plant located in the Egyptian environment for phytoremediation of hazardous toxic and radioactive elements dissolved in aqueous wastes dispersed from industrial and urban applications through the human activities was evaluated.

48 citations


Journal ArticleDOI
TL;DR: In this paper, an experimental study was carried out to understand how three main geometrical parameters, including the injection hole diameter, injection hole number, and divergent angle, influence the bubble size distributions.

Journal ArticleDOI
TL;DR: In this paper, the authors present the results from a study on multi-hazard risk assessment that is conducted using a Bayesian network (BN) with Bayesian inference, which can consider statistical dependencies among risks from multiple hazards, allows updating by considering the newly available data/information at any level, and provide a novel way to explore alternative failure scenarios that may exist due to vulnerabilities.

Journal ArticleDOI
TL;DR: In this article, a sub-sized specimen geometry, SS-Mini, is designed for irradiation in materials test reactors such as the High Flux Isotope Reactor and post-irradiation out-of-hot cell testing.

Journal ArticleDOI
TL;DR: In this article, a numerical study of a nuclear fuel rod system is performed using a combined computational fluid dynamics (CFD) and computational structural mechanics (CSM) approach, where the material properties of the model are tuned to match the experimental natural frequencies measured in free air.

Journal ArticleDOI
TL;DR: In this paper, three aspects of FSI problems are numerically studied and two different coupling schemes namely IQN-ILS and Guess-Seidel are thoroughly assessed for a laminar flow single rod experiment performed by Vattenfall (Lillberg et al. 2015).

Journal ArticleDOI
TL;DR: In this paper, the effects of obstacle geometry (obstacle pitch, obstacle shape, flow blockage) on the wall temperature and heat transfer coefficient were investigated and compared with leading prediction methods for supercritical heat transfer in bare tubes and for spacer effects.

Journal ArticleDOI
TL;DR: In this paper, the authors used a neural network to predict the behavior of a small light water Reactor (SWR) during various core power inputs and a loss of flow accident.

Journal ArticleDOI
TL;DR: In this article, a wall condensation model (WCM) is used to handle wall condense wherein the condensate is computed as a sink term and the simulated results are benchmarked against available data from several small and large scale experiments (such as TOSQAN, CONAN and others).

Journal ArticleDOI
Xiaotao Zheng1, K.W. Wu1, Wang Wei1, Jiuyang Yu1, Jianmin Xu1, Linwei Ma1 
TL;DR: In this paper, the effects of stress rates on low cycle fatigue and ratcheting deformation of 35CrMo steel under uniaxial stress-controlled loading were investigated at 500°C.

Journal ArticleDOI
TL;DR: In this article, transient studies of the Molten Salt Fast Reactor (MSFR) are presented, where an innovative neutronic approach called "Transient Fission Matrix" is used to perform spatial kinetic calculations with a reduced computational cost through a pre-calculation of the Monte Carlo spatial and temporal response of the system.

Journal ArticleDOI
TL;DR: In this article, rate theory simulations of fission gas behavior in U 3 Si 2 were reported for light water reactor (LWR) steady-state operation scenarios, and the reliability of the model was examined by performing sensitivity analysis of the key parameters.

Journal ArticleDOI
TL;DR: In this article, the effects of liquid subcooling, surface coating, material property, and surface oxidation on transient pool boiling heat transfer were investigated experimentally using the vertical metal rod and quenching method.

Journal ArticleDOI
TL;DR: In this paper, the effects of wear and creep relaxation on gap formation in a grid-to-rod fretting PWR are analyzed. But the authors focus on the early stages of the gap formation and do not consider the effect of wear on the entire contact between the rod and grid.

Journal ArticleDOI
TL;DR: In this article, an interval fractional-order proportional integral derivative (INFOPID) controller was proposed for the power control of a highly nonlinear Pressurized Heavy Water Reactor (PHWR) under step-back condition.

Journal ArticleDOI
Long Yun1, Wang Dezhong1, Yin Junlian1, Hu Yaoyu1, Ran Hongjuan1 
TL;DR: In this paper, the inlet and outlet pressure pulsation characteristics of a nuclear reactor coolant pump with different inflows were investigated using the CFD approach, and the results showed that the non-uniform inflow leads to an offset of the X radial force and the Y radial force, which leads to the increasing of the asymmetric degrees of radial force.

Journal ArticleDOI
TL;DR: In this article, the authors compared the flow fields through wire-wrapped rod bundles of 19, 37, 61, and 91 pins and investigated the ability of each to capture the relevant physics of a larger bundle.

Journal ArticleDOI
TL;DR: The results suggested that human factor criterions have a significant effect on operators’ MWL so they should be considered during designing of interface, and using of NASA-TLX tool and eye movement technique is useful for assessing of human-computer interface (HCI) designs in NPPs.

Journal ArticleDOI
Chang Wook Shin1, Hee Cheon No1
TL;DR: In this paper, the effects of system pressure, inlet water temperature and heat input on the thermal-hydraulic characteristics of PCHE were investigated and compared and analyzed various existing correlations.

Journal ArticleDOI
TL;DR: In this paper, a stochastic searching algorithm to find the collision droplet pairs is performed by utilizing the collision kernels and defining the mean free path of a droplet, and the criteria to distinguish the different regimes of binary droplet collision are carried out.

Journal ArticleDOI
TL;DR: In this paper, the effect of turbulence on the propagation speed of hydrogen/air flames was investigated using a spherical vessel equipped with 8 motors which are linked to fans inside the bomb, and the results showed that a homogeneous and isotropic turbulence is created with a fluctuation speed that can reach 4m/s at 5000rpm.