scholarly journals Scheme Design and Data Analysis of Critical Physical Experiment for Hexagonal Casing Type Fuel Reactor

2021 ◽  
Vol 9 ◽  
Author(s):  
Wang Lianjie ◽  
Wei Yanqin ◽  
Lou Lei ◽  
Huang Shien
Keyword(s):  
Design Method ◽  
Physical Experiment ◽  
Design Code ◽  
Experiment Data ◽  
Scheme Design ◽  
The Core ◽  
Physical Experiments ◽  
Fuel Reactor ◽  
Type Fuel ◽  
Loading Scheme

Based on the requirement of Hexagonal Casing Type Fuel Reactor (HCTFR) nuclear design and the critical physical experiment design method introduced by a single factor, 11 core critical physical experiments are proposed to validate the calculation accuracy and reliability of the nuclear design code CPLEV2. The experiment loading scheme fully takes into account the various components and more than one irradiate hole in the HCTFR core, which is used as critical physical experiment schemes successfully. According to the critical physical experiment data, the reactivity calculation deviations of all critical physical experiments are within ±1.0%. The validation results show that the nuclear design code CPLEV2 has high calculation accuracy and reliability for the core of hexagonal casing type fuel, and it can be used for HCTFR nuclear design.

Design Method of a New Type of Expansive Stressed Grouted Clamp

2013 ◽  
Vol 838-841 ◽  
pp. 586-592
Author(s):  
Cong Li ◽  
Xiang Shi
Keyword(s):  
Structural Strength ◽  
Design Method ◽  
Design Procedure ◽  
Experiment Data ◽  
The Core ◽  
Practical Design ◽  
New Type ◽  
Previous Design ◽  
Stress Formation ◽  
Design Experience

Considering the different mechanism of self-stress formation, a new type of structure was proposed for expansive grouted clamp, which is used for underwater repair on steel tubular. Since the structure is changed totally, the corresponding design method should be modified. This paper summarizes a design method of the new type of expansive stressed grouted clamp and sorts out a set of practical design procedure for the new structure. The core principles of the design method are based on the checks on slip capacity, member crushing and structural strength, associated with the experiment data and previous design experience as reference. An example of such clamp design for repairing a horizontal brace of a jacket platform is also introduced to describe how this method works.

Judgment Method of Accelerated Testing Effects on Compound Friction Material

2013 ◽  
Vol 750-752 ◽  
pp. 76-80
Author(s):  
Shi Meng Xu ◽  
Run Bo Ma ◽  
Jian Hua Du ◽  
Jun Hong Liu ◽  
Qi Jin
Keyword(s):  
Design Method ◽  
Block Design ◽  
Friction Material ◽  
Accelerated Life Testing ◽  
Accelerated Testing ◽  
Experiment Data ◽  
Testing Effects ◽  
Accelerated Life ◽  
Distribution Laws ◽  
Basic Statistical Analysis

For an copper-based composite friction material the accelerated testing effects was judged under three kinds of testing stress in this paper, that was, through the block design method and analysis, the forthright and functional judging method was given in certain extent for the accelerated testing designed by this paper. Meanwhile, the both methods about basic statistical analysis and basic accelerated life testing was used for discussing the statistical distribution laws on the experiment data which that the copper-based composite friction material were under three kinds of testing stress.

Influence of Xe-135 Dynamic Behavior on Core Operation Safety for a Molten Salt Reactor

2018 ◽  
Author(s):  
Wu Jian-hui ◽  
Li Xiao-xiao ◽  
Hu Ji-feng ◽  
Chen Jin-gen ◽  
Yu Cheng-gang ◽  
...  
Keyword(s):  
Dynamic Behavior ◽  
Density Variation ◽  
Reactor System ◽  
The Core ◽  
Gas Removal ◽  
Fuel Reactor ◽  
System Functioning ◽  
Neutron Poison ◽  
Neutron Absorption Cross Section ◽  
Removal System

The isotope Xe-135 has a large thermal neutron absorption cross section and is considered to be the most important fission product. A very small amount of such neutron poison may significantly affect the reactor reactivity since they will absorb the neutrons from chain reaction, therefore monitoring their atomic density variation during reactor operation is extremely important. In a molten reactor system, Xe-135 is entrained in the liquid fuel and continuously circulates through the core where the neutron irradiation functions and the external core where only nuclei decay occurs, at the same time, an off-gas removal system operates for online removing Xe-135 through helium bubbling. These unique features of MSR complicate the Xe-135 dynamic behaviors, and the calculation method applied in the solid fuel reactor system is not suitable. From this point, we firstly analytically deduce the nuclei evolution law of Xe-135 in the flowing salt with an off-gas removal system functioning. A study of Xe-135 dynamic behavior with the core power change, shutdown, helium bubbling failure and startup then is conducted, and several valuable conclusions are obtained for MSR design.

scholarly journals MASHUP SCHEME DESIGN OF MAP TILES USING LIGHTWEIGHT OPEN SOURCE WEBGIS PLATFORM

2018 ◽  
Vol XLII-3 ◽  
pp. 565-571
Author(s):  
T. Hu ◽  
J. Fan ◽  
H. He ◽  
L. Qin ◽  
G. Li
Keyword(s):  
Coordinate System ◽  
Low Cost ◽  
Image Data ◽  
Source Image ◽  
Scheme Design ◽  
Paper Cover ◽  
Data Source ◽  
Single Data Source ◽  
Single Data ◽  
Loading Scheme

To address the difficulty involved when using existing commercial Geographic Information System platforms to integrate multi-source image data fusion, this research proposes the loading of multi-source local tile data based on CesiumJS and examines the tile data organization mechanisms and spatial reference differences of the CesiumJS platform, as well as various tile data sources, such as Google maps, Map World, and Bing maps. Two types of tile data loading schemes have been designed for the mashup of tiles, the single data source loading scheme and the multi-data source loading scheme. The multi-sources of digital map tiles used in this paper cover two different but mainstream spatial references, the WGS84 coordinate system and the Web Mercator coordinate system. According to the experimental results, the single data source loading scheme and the multi-data source loading scheme with the same spatial coordinate system showed favorable visualization effects; however, the multi-data source loading scheme was prone to lead to tile image deformation when loading multi-source tile data with different spatial references. The resulting method provides a low cost and highly flexible solution for small and medium-scale GIS programs and has a certain potential for practical application values. The problem of deformation during the transition of different spatial references is an important topic for further research.

scholarly journals Conceptual Core Design Study of the Very High Temperature Gas-Cooled Reactor (VHTR) Upgrading the Core Performance by Using Multihole-Type Fuel

2008 ◽  
Vol 7 (1) ◽  
pp. 32-43 ◽  
Author(s):  
Kazutaka OHASHI ◽  
Tetsuo NISHIHARA ◽  
Kazuhiko KUNITOMI ◽  
Masaaki NAKANO ◽  
Yujiro TAZAWA ◽  
...  
Keyword(s):  
High Temperature ◽  
Design Study ◽  
The Core ◽  
Conceptual Core ◽  
Very High ◽  
Type Fuel ◽  
High Temperature Gas

scholarly journals PUSAT KREATIVITAS ANAK DI PONTIANAK

2021 ◽  
Vol 9 (2) ◽  
pp. 398
Author(s):  
Adilla Chairiah ◽  
Lestari Lestari ◽  
Irwin Irwin
Keyword(s):  
Design Method ◽  
Secondary Data ◽  
Building Design ◽  
Primary Data ◽  
Circular Shape ◽  
The Core ◽  
The Future ◽  
Human Need ◽  
Child Friendly ◽  
The Right

Children are the future successors of the nation who must be equipped with supporting knowledge and education. One of the factors that influence the development of children are children’s creativity. Creativity is important for children because creativity is useful as a human need to be creative, creativity allows children to express themselves and thoughts in solving problem and many more. Creativity activities in schools are limited, namely 4-5 hours due to strict curriculum (Kemendikbud, 2012). The facilities that support the development of children's creativity in Pontianak is quite limited. This condition shows that Pontianak needs facilities that support the development of children's creativity, namely the Child Creativity Center in Pontianak. The design method starts from identifying the problem by looking at the issues, data collecting consists of primary data and secondary data, and then the data is analyzed which produced pre design drawing. The emphasis on the design is child-friendly which includes aspects of safety, comfort, freedom and stimulates children's potential. This concept produces a mass building design with a circular shape that has been transformed. The use of the right colors, shapes, materials and dimensions is the core of the design of the Children's Creativity Center in Pontianak.

scholarly journals USE OF MOBILE DEVICE SENSORS TO CONDUCT THE PHYSICAL EXPERIMENT

2019 ◽  
pp. 345-354
Author(s):  
Sergii Tereschuk ◽  
Vira Kolmakova
Keyword(s):  
Stem Education ◽  
Mobile Device ◽  
Mobile Application ◽  
Positive Impact ◽  
Physical Experiment ◽  
Science Journal ◽  
Conservation Of Energy ◽  
Physical Experiments ◽  
Physical Laws ◽  
Physical Phenomena

The concept of "sensor" in the system of physical experiment at school is considered in the article. The possibility of using sensors in physics lessons is substantiated: transformation of an input signal into an output is accompanied by transformation of one type of energy into another (according to the law of conservation of energy), and the functioning of the sensors are based on physical phenomena (physical effects or principles), which are described by the relevant physical laws. The article deals with the methodical aspects of using the Google Science Journal mobile application in physics lessons. This application allows you to use the sensors of your mobile device for a physical experiment. As an example we consider the frontal laboratory work "Determination of the period of oscillation of the mathematical pendulum". The method of its carrying out is offered in two approaches: the first one involves the traditional technique of conducting the experiment, and the second approach is using the mobile application Google Science Journal. The article shows that the use of smartphone sensors in physics lessons has perspectives in the context of STEM education. Thus, the use of the considered application is of current importance and requires further scientific and methodological research on its use in the high school physical experimentation system. The Science Journal mobile application can be used to connect external sensors, which will have a positive impact on the introduction of STEM education, and to use Arduino in the demonstration of physical experiments by a physics teacher. Connecting sensors using an Arduino microcontroller is particularly promising in creative lab work on physics.

scholarly journals Exploring Deep-Rock Mechanics through Mechanical Analysis of Hard-Rock In Situ Coring System

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Jianan Li ◽  
Heping Xie ◽  
Ling Chen ◽  
Cong Li ◽  
Zhiqiang He
Keyword(s):  
Rock Mechanics ◽  
Hard Rock ◽  
Design Method ◽  
Drill Pipe ◽  
In Situ Stress ◽  
Drilling Depth ◽  
Innovative Design ◽  
The Core ◽  
Deep Rock

Exploration of deep-rock mechanics has a significant influence on the techniques of mining and rock mechanics. Rock coring technique is the basic method for all rock mechanics study. With the increase of the drilling depth and increasing strength of the hard rock, how to obtain high-quality rock core through various coring techniques is an eternal work. Here an innovative method is applied to design the new coring system to maximize the efficiency of operation. The stress conditions or parameters of rock core in the coring are analyzed, and the mechanism of the core with in situ stress is shown in this paper. The conflict of the core and coring tool chamber is proposed for the innovative design. The innovative design method is fulfilled by the theory of inventive problem solving (TRIZ). An improved coring system for the full-length core with in situ stress was obtained with the solutions of improved coring mechanism, cutting mechanism, and spiral drill pipe.

Repeatability Assessment and Sensitivity Analysis of Needle Insertion Physical Experiment

2018 ◽  
Author(s):  
Murong Li ◽  
Yong Lei
Keyword(s):  
Sensitivity Analysis ◽  
Parameter Estimation ◽  
Model Validation ◽  
Ground Truth ◽  
Needle Insertion ◽  
Physical Experiment ◽  
Future Experiment ◽  
Parameter Uncertainties ◽  
Tissue Interactions ◽  
Physical Experiments

Needle insertion physical experiments are used as the ground truth for model validation and parameter estimation by measuring the needle defection and tissue deformation during the needle-tissue interactions. Hence parameter uncertainties can contribute experiment errors. To improve the repeatability and accuracy of such experiments, one-at-a-time (OAT) sensitivity analysis is used to study the impacts of the factors, such as stirring temperature, frozen time, thawing time during the process of making hydrogels as well as repeated path insertion and different puncture plane in the planer needle insertion experiments. The results show that the puncture plane has the greatest effect on the repeatability of needle insertion physic experiments, followed by repeated path insertion, while other factors have the least effect. The results serve to guide future experiment design for greater repeatability and accuracy.

Study of Conceptual Design of the Extension Method for Mechanical Products

2002 ◽  
Author(s):  
Yanwei Zhao ◽  
Guoxian Zhang
Keyword(s):  
Conceptual Design ◽  
Design Method ◽  
Extension Method ◽  
The Core ◽  
Function Decomposition ◽  
Core Technology ◽  
Mechanical Products ◽  
Function Expression ◽  
The Given ◽  
Important Significance

On the foundation summing up existing intelligent conceptual design method, this paper puts forward the research content, characters, path, and method of the conceptual design of extension for mechanical products. This paper rounds the core technology of intelligent conceptual design to research the modeling method of extension design in function-principle-layout-configuration. It includes the function expression, function decomposition and synthesis, function illation and decision. The computers are utilized to simulate the human dialectic thought when resolve problems in this method. The given example shows that the extension method has been applied in the field of conceptual design for mechanical products. This method has important significance to resolve the bottleneck problem of theory studying and engineering realizing of intelligent CAD.

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