Research on flow field characteristics and force analysis of fuel elements pneumatic transportation in a pebble bed reactor

2018 ◽  
Vol 111 ◽  
pp. 568-578 ◽  
Author(s):  
Hongbing Liu ◽  
Dong Du ◽  
Peng Shen ◽  
Baohua Chang ◽  
Wenzeng Zhang ◽  
...  
Keyword(s):  
Flow Field ◽  
Force Analysis ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Flow Field Characteristics ◽  
Pneumatic Transportation ◽  
Fuel Elements

Experimental study of flow field characteristics on bed configurations in the pebble bed reactor

2017 ◽  
Vol 102 ◽  
pp. 1-10 ◽  
Author(s):  
Xinlong Jia ◽  
Nan Gui ◽  
Xingtuan Yang ◽  
Jiyuan Tu ◽  
Haijun Jia ◽  
...  
Keyword(s):  
Experimental Study ◽  
Flow Field ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Flow Field Characteristics

Dynamic analysis and application of fuel elements pneumatic transportation in a pebble bed reactor

Energy ◽  
2015 ◽  
Vol 79 ◽  
pp. 33-39 ◽  
Author(s):  
Hongbing Liu ◽  
Dong Du ◽  
Zandong Han ◽  
Yirong Zou ◽  
Jiluan Pan
Keyword(s):  
Dynamic Analysis ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Pneumatic Transportation ◽  
Fuel Elements

scholarly journals Modeling of Fuel Elements Cycling System in Pebble Bed Reactor Based on Timed Places Control Petri Nets

2013 ◽  
Vol 05 (04) ◽  
pp. 510-516
Author(s):  
Hongbing Liu ◽  
Peng Shen ◽  
Dong Du ◽  
Xin Wang ◽  
Haiquan Zhang
Keyword(s):  
Petri Nets ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Cycling System ◽  
Fuel Elements

Fuel elements of the high temperature pebble bed reactor

1975 ◽  
Vol 34 (1) ◽  
pp. 93-108 ◽  
Author(s):  
L. Wolf ◽  
G. Ballensiefen ◽  
W. Fröhling
Keyword(s):  
High Temperature ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Fuel Elements

Pneumatic transportation pattern of fuel pebbles in a pebble-bed reactor

2017 ◽  
Vol 99 ◽  
pp. 434-443 ◽  
Author(s):  
Hongbing Liu ◽  
Dong Du ◽  
Zandong Han ◽  
Baohua Chang ◽  
Jiluan Pan ◽  
...  
Keyword(s):  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Pneumatic Transportation

Investigations on the Movement of Fuel Elements in the Core of a Pebble Bed Reactor

1969 ◽  
Vol 91 (2) ◽  
pp. 390-394
Author(s):  
D. Bedenig ◽  
C. B. v. d. Decken ◽  
W. Rausch
Keyword(s):  
Theoretical Model ◽  
Flow Behavior ◽  
Experimental Studies ◽  
Experimental Equipment ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
The Core ◽  
Method Of Measurement ◽  
Fuel Elements ◽  
Type Fuel

For several years gas-cooled high temperature reactors have been developed in Germany, the main feature of which are their pebble-type fuel elements. The pebble bed is in the state of a continuous circulation process which is the reason for a series of nuclear and technical advantages. To make use of these advantages, comprehensive experimental studies on the flow behavior of a pebble bed were carried out. First, experimental equipment and the most successful method of measurement are described. Then typical results of parameter studies are reported as well as a theoretical model to calculate the pebble bed flow behavior. At last typical functions describing the flow behavior in the core of the THTR 300 MWe Prototype Reactor are reported.

Gas-Cooled Modular Reactors With Spherical Fuel Elements — Their Inherent Safety and Applications Not Just for Power Generation

2014 ◽  
Author(s):  
Walter Jaeger ◽  
H. J. Hamel ◽  
Heinz Termuehlen
Keyword(s):  
Power Generation ◽  
High Temperature ◽  
Reactor Design ◽  
Inherent Safety ◽  
Pebble Bed ◽  
Pebble Bed Reactor ◽  
Pebble Bed Reactors ◽  
Fuel Elements ◽  
High Temperature Gas

The gas-cooled reactor design with spherical fuel elements, referred to as high-temperature gas-cooled reactors (HTGR or HTR reactors) or pebble bed reactors has been already suggested by Farrington Daniels in the late 1940s; also referred to as Daniels’ pile reactor design. Under Rudolf Schulten the first pebble bed reactor, the 46MWth AVR Juelich reactor (Atom Versuchs-Reactor Jülich) was built in the late 1960s. It was in operation for 22 years and extensive testing confirmed its inherent safety.

Experimental and Numerical Study of the Movement Mechanism and Characteristics of the Quasi-Static Pebble Flow

2013 ◽  
Author(s):  
Xinlong Jia ◽  
Nan Gui ◽  
Xingtuan Yang ◽  
Jiyuan Tu ◽  
Shengyao Jiang
Keyword(s):  
Numerical Study ◽  
Mixing Zone ◽  
Force Analysis ◽  
Particle Movement ◽  
Pebble Bed ◽  
Dem Simulation ◽  
Pebble Bed Reactor ◽  
Pebble Bed Reactors ◽  
Movement Mechanism ◽  
Pebble Flow

Quasi-static pebble flow, or so-called the very slow pebble flow, in a pebble bed reactor, with evident randomicity and dispersibility, is extremely complex. Improving the knowledge of the movement mechanism of quasi-static pebble flow can be beneficial to the safety of the pebble bed reactor. This study utilizes a phenomenological method and a discrete element method to investigate the interface features of two regions composed of differently colored pebbles. A pseudo-two dimensional experimental setup is established to facilitate the observation of movement of pebble. Then, the DEM simulation is carried out to analyze the further details of particle movement mechanism. To some extent, the two methods are closely related and mutually confirmed. In this study, some special phenomena are observed, such as the non-uniformity, mixing zone, stagnant zones, the propagation of voids, slow flow zone, etc. Moreover, some basic issues on the movement mechanism and characteristics of quasi-static pebble flow are discussed, e.g. the interpretation of force analysis inside the pebble packing, propagation and distribution of voids, formation of equilibrium arches, the effects of stagnant zone on the flow field, and so on. These characteristics of the quasi-static pebble flow are very different from the continuous flow, and the understanding of these characteristics is very helpful for the design and analysis of pebble bed reactors.

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