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1 – 4 of 4Zhizhong Kang, Shixing Ding, Zhi-ang Shuai and Baomin Sun
This paper aims to shows the ability of the EDC model with a global reaction mechanism to describe reactions in the Eulerian simulation of a circulating fluidized bed (CFB).
Abstract
Purpose
This paper aims to shows the ability of the EDC model with a global reaction mechanism to describe reactions in the Eulerian simulation of a circulating fluidized bed (CFB).
Design/methodology/approach
The eddy dissipation concept (EDC) model is embedded in an Eulerian-Eulerian approach to simulate homogeneous reactions.
Findings
EDC_G is better than ED_FR in describing chemical reactions. The reaction of CH4 with O2 is faster than that of CO with O2, and NH3 is more liable to be converted than HCN. The combustion rate is higher than the Boudouard reaction rate of coal particles.N2O is mainly reduced by carbon, and NO is mainly converted by carbon into N2 and CO2.
Originality/value
The EDC model with a global reaction mechanism is embedded in a multi-fluid Eulerian approach to simulate the homogeneous reactions in the coal combustion in a CFB, including combustion of volatile gases, desulfurizing reactions and NOx reactions.
Details
Keywords
Lan Song, Yang Zhao, Yaoming Zhou and Haifei Xiang
The purpose of this paper is to analyze and figure out the temperature field and thermal stress field with the calculation model of thermal insulation material and composite…
Abstract
Purpose
The purpose of this paper is to analyze and figure out the temperature field and thermal stress field with the calculation model of thermal insulation material and composite material.
Design/methodology/approach
The paper adopted the three-dimensional finite element algorithm.
Findings
The simulated results showed great shearing strength between the chipset and the printed circuit board. The position of chip exerts great influence on the distribution of temperature field and thermal stress field of circuit board. The reasonable distribution of chip will effectively reduce the temperature extremum and stress extremum of circuit board.
Originality/value
The paper analyzes and presents a discussion of the problems relating to the density of electronic packaging. The analysis process and the method of the paper provide essential help in resolving electronic device heat problems.
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Keywords
By reviewing the related literature on the Jiaoshi Pinren Zhi (JPZ) system, this paper seeks to indicate that the implementation of JPZ not only has led to domestic brain drain…
Abstract
Purpose
By reviewing the related literature on the Jiaoshi Pinren Zhi (JPZ) system, this paper seeks to indicate that the implementation of JPZ not only has led to domestic brain drain and the imbalance of teachers' qualities between different areas and schools, but also has violated children's equal rights to education guaranteed by the Constitution and educational laws in PR China.
Design/methodology/approach
By analysing national policies and laws and some cases, the paper points out that the reforms on teachers' employment causes the imbalance of teachers' qualities between different areas and schools and it is against the principle of children's equal rights to education guaranteed by the Constitution and some educational laws in China.
Findings
Since the late 1980s, many reform initiatives have been launched in the context of the transition from planned economy to market economy in China.
Originality/value
The reforms on the teachers' employment system from “Tongyi Fenpei” (TF, a system of unified placement for all graduates) and the life‐time employment system to JPZ (a free contract employment system) is one of the important reform initiatives.
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Numerous Chinese management studies have demonstrated significant differences between Chinese and Western management. This exploratory paper investigates the impact of Chinese…
Abstract
Numerous Chinese management studies have demonstrated significant differences between Chinese and Western management. This exploratory paper investigates the impact of Chinese culture and Western traditions on China's contemporary school leaders' views of leadership and management, particularly in the areas of relationship building, delegation, and promotion. Data were drawn from questionnaires completed by school leaders and individual interviews with principals from different parts of China. The findings indicate that the differences between Chinese and Western management practices in Chinese schools are not static and should not be over-stressed. To different extents, the respondent school leaders of China were affected by both Chinese and Western values and practices in school leadership and management. Specifically, they were more influenced by Chinese culture in the areas of school management and organization and by Western values and practices in the areas of relationship building, staff performance, and promotion. Their leadership and management preferences were also influenced by other factors, including gender, domestic politics, and development.