国家自然科学基金(50675112)

作品数:8被引量:51H指数:4
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相关作者:陈大融汪家道秦力李永健陈皓生更多>>
相关机构:清华大学中国舰船研究院更多>>
相关期刊:《清华大学学报(自然科学版)》《Chinese Physics B》《Science Bulletin》《科学通报》更多>>
相关主题:防污技术海洋生物污染物理方法丁基锡化合物生物杀灭剂更多>>
相关领域:理学化学工程交通运输工程动力工程及工程热物理更多>>
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一种二元复合结构聚合物减阻涂层的制备被引量:2
《清华大学学报(自然科学版)》2011年第12期1844-1848,1854,共6页豆照良 汪家道 余锋 陈大融 
国家自然科学基金资助项目(50721004,50675112,50505020)
为了通过表面形貌构型实现水下减阻,基于Benard对流理论制备了一种具有二元复合结构的聚合物涂层。采用高压空气喷涂工艺,将涂料喷涂在基体材料上形成液膜;液膜固化后,亚mm级和μm级二元复合的形貌结构在涂层表面自发形成。对液膜体系...
关键词:二元复合结构 Benard对流 减阻 
Fabrication of a micro-structured surface based on interfacial convection for drag reduction被引量:1
《Chinese Science Bulletin》2011年第7期626-632,共7页DOU ZhaoLiang WANG JiaDao YU Feng CHEN DaRong 
supported by the National Natural Science Foundation of China (50721004, 50675112)
Based on interfacial convection in the presence of solvent evaporation, a novel method for the fabrication of a micro-structured surface is proposed to facilitate drag reduction. A mixture was coated on a substrate th...
关键词:界面张力梯度 减阻性能 微结构 对流 表面制备 溶剂蒸发 表面加工 喷漆系统 
Progress of marine biofouling and antifouling technologies被引量:20
《Chinese Science Bulletin》2011年第7期598-612,共15页Shan Cao JiaDao Wang HaoSheng Chen DaRong Chen 
supported by the National Natural Science Foundation of China (50675112 and 50721004);the National Basic Research Pro-gram of China (2007CB707702)
Adhesion of marine fouling organisms on artificial surfaces such as ship hulls causes many problems, including extra energy consumption, high maintenance costs, and increased corrosion. Therefore, marine antifouling i...
关键词:海洋生物污染 防污技术 物理方法 丁基锡化合物 化学方法 生物杀灭剂 能源消耗 生物附着 
Electronic properties of hydrogen- and oxygen-terminated diamond surfaces exposed to the air被引量:1
《Chinese Physics B》2009年第5期2041-2047,共7页刘峰斌 汪家道 陈大融 颜大运 
supported by the National Natural Science Foundation of China(Grant No 50675112);National Basic Research Program of China(Grant No 2007CB707702);the China Postdoctoral Science Foundation(Grant No 20070410515)
The electronic properties of hydrogen- and oxygen-terminated diamond surfaces exposed to the air are investigated by scanning probe microscopy (SPM). The results indicate that for the hydrogen-terminated diamond sur...
关键词:hydrogen-termination oxygen-termination electronic properties diamond film 
Cl与H_2O在Fe(100)表面共吸附的稳定结构与电子特性被引量:6
《科学通报》2009年第6期740-746,共7页赵巍 汪家道 刘峰斌 陈大融 
国家自然科学基金(批准号:50675112;50721004);教育部博士点基金(编号:20070003103)资助项目
采用基于密度泛函理论的第一性原理研究了Cl与H2O共同吸附于Fe(100)晶面上的稳定几何结构与电子特性,得出了Cl与H2O在Fe(100)晶面上的最稳定吸附位置、相应的能量关系及表面电子结构特性.研究结果表明,Cl与H2O在Fe(100)晶面上的最稳定...
关键词:密度泛函理论 Fe(100)晶面 H2O CL 分子吸附 
Effect of roughness and wettability of silicon wafer in cavitation erosion被引量:5
《Chinese Science Bulletin》2008年第18期2879-2885,共7页JIANG NaNa LIU ShiHan CHEN DaRong 
the National Natural Science Foundation of China (Grant Nos. 50475018, 50675112 and 50505020)
Material damage of silicon wafer with different roughness and wettability was investigated by using the self-made vibration cavitation apparatus in de-ionized water. Various roughness and wettability of sili- con wafe...
关键词:气蚀 粗糙度  可湿度 
Key roles of micro-particles in water on occurrence of cavitation-erosion of hydro-machinery被引量:4
《Chinese Science Bulletin》2008年第10期1603-1607,共5页WANG JiaDao CHEN HaoSheng QIN Li LI Yongdian CHEN DaRong 
the National Natural Science Foundation of China (Grant Nos. 50675112, 50475018 and 50505020)
It has been believed for about one hundred years that the cavitation directly induces the cavitation erosion. It is proposed in this research that cavitation is only the necessary condition but not the sufficient cond...
关键词:气穴现象 侵蚀作用 表面粗糙度 微粒物 
水力机械空蚀中微颗粒的关键作用被引量:13
《科学通报》2007年第22期2683-2687,共5页汪家道 陈皓生 秦力 李永健 陈大融 
国家自然科学基金资助项目(批准号:50675112;50475018;50505020)
100多年来,人们一直认为空化直接导致了空蚀的发生.但本研究发现,空化仅仅是导致空蚀的必要条件,而不是充分条件.旋转圆盘空蚀实验结果显示,微颗粒在空蚀过程中起到了不可或缺的作用,而且颗粒粒径对钢样表面蚀坑的形成有显著影响.钢样...
关键词:空化 空蚀 表面形貌 颗粒 
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