重力式油水分离器内部流场仿真及实验研究

建立了重力分离器油水两相分离模型,通过CFD软件模拟含水率为20%、60%和90%油水混合物分离效果,进而对分离器内部结构进行改进。通过建立实验装置,进行油水两相分离实验。研究结果表明：1）油水分离效果明显,可分为原油层、乳化层和水层。随着含水率升高,乳化层厚度递减。2）同模拟结果相比分离器出口处油和水实际分离效果的最大误差为0.25%和0.63%,从而说明改进结构后重力油水分离器分离效果明显。     

基于重力卫星数据探测核幔边界动态过程信号

使用GRACE（Gravity Recovery and Climate Experiment）重力场数据，联合多源数据模型剔除地表过程的重力信号，以分离得到核幔边界处包含液态外核流体运动特征的重力信号，同时根据CHAOS-7地磁场模型重建核幔边界与地球表面的地核地磁场变化，以此为基础使用主成分分析（PCA）与独立主成分分析（ICA）方法对重力信号与磁场信号进行统计分解，得到2种信号的时变模态与空间模态，对比分析2种信号分解结果的相关性，研究表明，重力信号第3模式的时变模态与磁场信号第2模式的时变模态相关性较好，同时，其空间模态反映了太平洋低纬度地区较为明显的东西向“偶极子”形式的变化特征，与地磁场二阶导数在太平洋地区的空间变化特征相对应，在2014年以后重力信号的时变模态与磁场信号二阶导数的时变模态均表现出相同的线性快速变化特征，与现有的研究成果相符合。     

Did Samuel Clarke really disavow action at a distance in his correspondence with Leibniz?: Newton,Clarke, and Bentley on gravitation and action at a distance

In this paper I ague against John Henry's claim that Newton embraced unmediated action at a distance as an explanation of gravity (Henry, 1994, 1999, 2011, 2014). In particular, I take issue with his apparent suggestion that the fact, as he sees it, that two of Newton's prominent followers, namely, Richard Bentley and Samuel Clarke, embraced unmediated action at a distance as an explanation of gravity provides significant supporting evidence that Newton did as well (see Henry, 1994 and 1999). Instead, I argue that while Bentley did ultimately defend the notion of unmediated action at a distance as an explanation of gravity, Newton himself accepted that notion neither in his correspondence with Bentley, as Henry has maintained, nor in any of his later works. I also provide evidence that suggests that Newton did, in fact, accept both the principle of local causation and the passivity of matter. Finally, I argue that whatever the case may be with respect to Newton on the matter, it is clear from his correspondence with Leibniz, as well as from his Boyle lectures, that contrary to what Henry has maintained, Clarke was a stalwart opponent of unmediated action at a distance due to his strong commitment to both the principle of local causation and the passivity of matter.     

Leibnizian relationalism for general relativistic physics

An ontology of Leibnizian relationalism, consisting in distance relations among sparse matter points and their change only, is well recognized as a serious option in the context of classical mechanics. In this paper, we investigate how this ontology fares when it comes to general relativistic physics. Using a Humean strategy, we regard the gravitational field as a means to represent the overall change in the distance relations among point particles in a way that achieves the best combination of being simple and being informative.     

宾汉非牛顿稠油微观驱替特征

利用加入毛管力修正项的Ｂｕｋｌｅｙ－Ｌｅｖｅｒｅｔｔｅ偏微分方程，对水驱宾汉型稠油进行了数值求解，并研究了毛管力和重力对水驱宾汉稠油的影响．结果表明，含水饱和度和驱替效率不仅与相对渗透率有关．还要受到稠油内在的宾汉非牛顿特征的影响．毛管力在水驱宾汉稠油低速渗流时对驱替的影响较为显著，其影响程度与稠油的非牛顿性有关．在油田开发实践中，水驱稠油低速渗流时．要充分考虑和利用毛管力进行驱油．     

基于引力的入侵检测方法

将万有引力的思想引入聚类分析，提出一种基于引力的聚类方法和度量聚类异常程度的引力因子概念，同时给出了一种计算聚类闽值的简单而有效的方法，在此基础上提出一种新的入侵检测方法GBID，GBID关于数据库的大小、属性个数具有近似线性时间复杂度，这使得GBID具有好的扩展性。在KDDCUP99数据集上的测试结果表明，GBID在准确性方面优于文献中已有无指导入侵检测方法，且对新的入侵有一定的检测能力。     

基于引力模型的安徽省县域经济增长影响因素分析

基于城市经济引力模型,构建了安徽省县域经济增长的引力模型,利用安徽省17个城市及其所辖县2003—2012年的面板数据进行实证检验,对安徽省县域经济增长的引力因素和阻力因素进行检验.检验结果表明:农村人均家庭经营耕地规模、农业技术水平、城市经济规模对县域经济增长产生了显著的促进作用,而农村经济规模、偏向于城市的收入分配体制、城乡距离、农业现代化水平则抑制了县域经济的增长.研究表明,要顺利推进安徽省县域经济增长需要转变经济发展思路,在保证三次产业共同发展的同时,加强基础设施建设,缩小收入差距,促进社会公平.     

带重力补偿的机器人分散自校正控制器

本文通过引入重力补偿,提出了一种有效的机器人分散自校正控制器。在一典型三自由度机器人上,在强负载扰动下对该控制器进行了仿真检验,仿真结果表明,该控制器控制效果良好。     

重力反演预测乌伦古地区泥岩分布

准噶尔盆地乌伦古地区石炭系碳质泥岩广泛发育,对该区烃源岩研究有重大意义。通过对重力资料场源分离和界面反演,获取了石炭系泥岩的深度、厚度及范围,有效指导了乌伦古地区烃源岩研究。