Results 41 to 50 of about 419,560 (212)

Analysis of effective thermal conductivity of pebble bed by artificial neural network and its computational and experimental verification

Case Studies in Thermal Engineering, 2022
While dealing with a solid-type ceramic breeding blanket for a fusion reactor, it is critical to determine the basic and thermal properties of the functional material in the form of a pebble bed.
Chirag Sedani, Maulik Panchal, Vipul Tanna, Paritosh Chaudhuri, Manoj Kumar Gupta   +4 more
doaj   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

CFD Investigations of Subcooled Flow Boiling in a Random Pebble Bed

Chemical Engineering Transactions, 2017
A new concept of nuclear reactors, Pebble Bed Water Reactor (PBWR), has attracted wide attention due to the advantages in the inherent safety performance, high conversion efficiency and low power density design.
S. Bu, J. Wu, J. Wang, W. Sun, Z. Ma, L. Pan   +5 more
doaj   +1 more source

Numerical Study on the Thermal Field and Heat Transfer Characteristics of a Hexagonal-Close-Packed Pebble Bed

Computation, 2022
Fuel elements in a high-temperature gas-cooled reactor (HTGR) core may be stacked with a hexagonal close-packed (HCP) structure; therefore, analyzing the temperature distribution and heat transfer efficiency in the HCP pebble bed is of great significance
Leisheng Chen, Jiahao Zhao, Yuejin Yuan, Jaeyoung Lee   +3 more
doaj   +1 more source

Dynamic response of communities and ecosystem functions to ecosystem engineering and multiple stressors in a marine mussel bed

Oikos, EarlyView.
Ecosystem engineers are crucial to the development of coastal ecosystem communities and functions. However, a better understanding of how environmental stressors affect ecosystem engineering and thereby influence communities and ecosystem dynamics is needed. We conducted an in situ experiment in a blue mussel Mytilus spp.
Félix Lauzon, Charlotte Carrier‐Belleau, Jérémie Boucher‐Fontaine, Philippe Archambault, Mathieu Cusson, Frédéric Guichard   +5 more
wiley   +1 more source

Effect of pebble size and bed dimension on the distribution of voidages in pebble bed reactor

, 2017
The HTR-10 built at Tsinghua University is an advanced pebble bed reactor because of its inherent safety and economic efficiency. It is fundamental to explore the voidage of the pebble bed.
Jiang Shengyao, Tu Jiyuan, Yin Xiong, Gui Nan, Ge Liang, Yang Xingtuan   +5 more
core   +1 more source

Study of Clogging Phenomenon for a Conical Hopper: The Influence of Particle Bed Height and Hopper Angle

Science and Technology of Nuclear Installations, 2021
The granular flow is one of the principal issues for the design of pebble bed reactors. Particularly, the clogging phenomenon raises an important issue for pebble bed reactors. In this paper, we conduct experiments and discrete particle simulation of two-
Muhammad Hammad Khalid, Yixian Zhou
doaj   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

Thermal and stress performance of a pebble red reactor. [PDF]

, 1966
A method for determining the thermal and stress performance of a pebble bed reactor is described.
Hawker, PAE
core  

Individual pebble temperature peaking factor due to local pebble arrangement in a pebble bed reactor core

, 2019
Scientists at the German AVR pebble bed nuclear reactor discovered that the surface temperature of some of the pebbles in the AVR core were at least 200 K higher than previously predicted by reactor core analysis calculations.
Kadak, Andrew, Sobes, Vladimir, Forget, Benoit   +2 more
core   +1 more source