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某8缸柴油机冷却水套CFD分析及优化 被引量:1
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作者 田小飞 薛冬新 《农业装备与车辆工程》 2015年第7期52-57,共6页
对某8缸柴油机冷却水套的流场进行了数值模拟及分析。运用ICEM CFD软件对整机冷却水套进行了网格划分,获得较高质量的有限元模型,导入FLUENT计算水套的流场。通过对水套速度场和压力场的分析,得出各缸冷却特性分布的规律,判断出第8缸冷... 对某8缸柴油机冷却水套的流场进行了数值模拟及分析。运用ICEM CFD软件对整机冷却水套进行了网格划分,获得较高质量的有限元模型,导入FLUENT计算水套的流场。通过对水套速度场和压力场的分析,得出各缸冷却特性分布的规律,判断出第8缸冷却性能相对较差。尝试通过改变进水总管末端的长度,探究其对各缸冷却液流动的影响,尤其是对第8缸的影响。结果表明,适当延长进水总管末端的长度,可以有效平衡各缸冷却水流量。 展开更多
关键词 柴油机 冷却水套 流场分析 改动研究
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An Action Research on Constructing a Multiple Learning Evaluation System on the Context of College English Teaching Reform
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作者 ZHAO Yu-shan 《Sino-US English Teaching》 2013年第11期842-846,共5页
Learning evaluation reform, an important part of the College English Teaching Reform, is not only a basis for teachers to reflect on their teaching method, to improve their teaching management, and to ensure the teach... Learning evaluation reform, an important part of the College English Teaching Reform, is not only a basis for teachers to reflect on their teaching method, to improve their teaching management, and to ensure the teaching quality, but also an effective means for students to enhance their learning efficiency and to gain sound learning effect as well. This research was intended to apply action research to the construction of multiple learning evaluation system with the aim of proving the effectiveness of the system on raising students' learning autonomy to find problems in the teaching, to testify the problems through questionnaire, then to design a feasible teaching strategy and carry out an experimental teaching, and finally to reflect on the whole teaching process from the perspective of how well the learner's learning autonomy was enhanced. The research result is valid, positively testifying the presupposition that the Multiple Evaluation System is a comprehensive one, which makes it possible to evaluate the students' progress in the whole learning process. 展开更多
关键词 learning evaluation learning autonomy action research
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Thinking on Practical Curriculum in Normal Education
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作者 Fang Chen 《International English Education Research》 2014年第3期106-108,共3页
In the forefi'ont of education reform issues, teacher training has got unprecedented attention. College students are the main force future teachers, especially whose professional skill level improvement is the one of... In the forefi'ont of education reform issues, teacher training has got unprecedented attention. College students are the main force future teachers, especially whose professional skill level improvement is the one of the current problems to be solved. The key to solve the problems lies in the rational development of practical education courses. Practical curriculum is a theory of practice, whose law of development expressed as a paradigm of action research. Practical Curriculum development is a prospective co-development law practice combined with theory. 展开更多
关键词 normal students Practical Curriculum theory research
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