检索结果-南通市图书馆

A BLOW-UP CRITERION OF STRONG SOLUTIONS TO THE QUANTUM HYDRODYNAMIC MODEL

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Scientia 2020年第3期40卷 795-804页

作者： guangwu wang Boling GUO School of Mathematics and Information Science Guangzhou UniversityGuangzhou 510006China Institute of Applied Physics and Computational Mathematics China Academy of Engineering PhysicsBeijing 100088China

In this article,we focus on the short time strong solution to a compressible quantum hydrodynamic *** establish a blow-up criterion about the solutions of the compressible quantum hydrodynamic model in terms of the gradient of the velocity,the second spacial derivative of the square root of the density,and the first order time derivative and first order spacial derivative of the square root of the density.

关键词： Compressible quantum hydrodynamic model blow-up criterion strong solution

EXPONENTIAL DECAY FOR THE VISCOUS BIPOLAR QUANTUM HYDRODYNAMIC MODEL

在线全文

学校读者我要写书评

暂无评论

Annals of Applied Mathematics 2015年第3期31卷 329-336页

作者： guangwu wang Graduate School of China Academy of Engineering Physics

In this paper, we pay attention to the time-decay rate of the viscous bipolar quantum hydrodynamic （QHD） models for semiconductors. By applying the entropy method, we prove that the solution of the viscous bipolar QHD models tends to the equilibrium state at an exponential decay rate for the multi-dimensional cases. The arguments is based on a series of a priori estimates.

关键词： viscous bipolar quantum hydrodynamic exponential time-decay rate

The study on the mechanical properties of PU/MF double shell self-healing microcapsules

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2020年第5期28卷 1459-1473页

作者： Guohao Du Jianfeng Hu Jianhui Zhou guangwu wang Shengli Guan Hailing Liu Man Geng Chuang Lv Yaoqiang Ming Jinqing Qu School of Chemistry and Chemical Engineering South China University of TechnologyGuangzhou 510641China State Key Laboratory of Advanced Transmission Technology Beijing 100000China Guangzhou Goaland Energy Conservation Tech.Co. Ltd.Guangzhou 510663China

The self-healing microcapsules can be buried in the coating to improve the anticorrosive *** this paper,self-healing microcapsules of polyurea(PU)/melamine resin(MF)double shell were prepared by in-situ polymerization and interfacial polymerization with isocyanate as the core *** electron microscope was used to observe the microcapsule *** structures of microcapsules prepared with different chain extenders were characterized by Fourier transform infrared *** micromanipulation system was used to loading–holding,loading–unloading and loading to rupture individual microcapsules,so as to explore the mechanical properties of *** Young’s modulus corresponding to microcapsules was calculated by mathematical model *** self-healing properties of microcapsule coating were characterized by optical *** experimental results showed that the microcapsule shell prepared under optimized conditions had a complete morphology and good mechanical *** microcapsule was in the elastic deformation stage under small deformation,and the plastic deformation stage under large *** Young’s modulus range of microcapsules was 9.29–14.51 MPa,and the corresponding Young’s modulus could be prepared by adjusting the *** surface crack of the coating containing microcapsule could heal itself after48 h in a humid environment.

关键词： Microcapsules Self-healing Double-layered Mechanical properties Young’s modulus

THE EULER EQUATION AND ONSAGER CONJECTURE

在线全文

学校读者我要写书评

暂无评论

Annals of Applied Mathematics 2017年第4期33卷 331-339页

作者： Boling Guo guangwu wang Institute of Applied Physics and Computational Math. China Academy of Engineering Physics School of Math.and Information Science Guangzhou University

In this paper, we introduce the progress of the Euler equation and Onsager conjecture. We also introduce the Euler＇s life, the researches about the incompressible Euler equation, and the Onsager conjecture.

关键词： incompressible Euler equation Onsager conjecture boundary layer Lax pair inviscid limit

GLOBAL FINITE ENERGY WEAK SOLUTION TO THE VISCOUS QUANTUM NAVIERSTOKES-LANDAU-LIFSHITZ-MAXWELL MODEL IN 2-DIMENSION

在线全文

学校读者我要写书评

暂无评论

Annals of Applied Mathematics 2016年第2期32卷 111-132页

作者： Boling Guo guangwu wang Institute of Applied Physics and Computational Math. China Academy of Engineering Physics Beijing 100088 PR China Graduate School of China Academy of Engineering Physics Beijing 100088 PR China

In this paper,we prove the global existence of the weak solution to the viscous quantum Navier-Stokes-Landau-Lifshitz-Maxwell equations in two-dimension for large *** main techniques are the Faedo-Galerkin approximati... 详细信息

关键词： global finite energy weak solution viscous quantum NavierStokes-Landau-Lifshitz-Maxwell system Faedo-Galerkin method

一种新的固固相变模型的弱解的存在性（英文）

在线全文

学校读者我要写书评

暂无评论

数学进展 2016年第3期45卷 403-416页

作者：王光武方兴张隽浙江工业大学理学院浙江杭州310023 中国工程物理研究院研究生院北京100088 北京应用物理与计算数学研究所北京100088

本文研究了一个新的基于构型力的序参数不守恒的相变模型.这个模型由两个线性方程和一个非线性的抛物方程组成.给出了其初边值问题的弱解的一种定义,并在一维情形下证明了弱解的存在性.

关键词：椭圆抛物耦合方程组弱解的存在性分部积分

量子Navier-Stokes-Landau-Lifshitz方程光滑解的爆破问题

在线全文

学校读者我要写书评

暂无评论

数学物理学报（A辑） 2022年第4期42卷 1074-1088页

作者：邱臻王光武广州大学数学与信息科学学院广州510006

该文研究量子Navier-Stokes-Landau-Lifshitz(QNSLL)方程组在区域Ω?R^(n)(n=1,2)上光滑解的爆破问题,证明了QNSLL方程组在上半空间R_(+)^(n)、全空间R^(n)以及球形区域上的光滑解将在有限时间内爆破,其中上半空间R_(+)^(n)、全空间R^(n)上的局部光滑解的爆破时间依赖于边界条件,球形区域的局部光滑解的爆破时间则依赖于边界条件和初值条件.特别地,以上结论对NSLL方程组也成立.

关键词：最子Navier-Stokes-Landau-Lifshitz方程局部光滑解爆破时间

铁路曲线地段机械化钢轨大修施工工艺探讨与研究

在线全文

学校读者我要写书评

暂无评论

高速铁路新材料 2023年第4期2卷 64-68页

作者：王光伍中国铁路济南局集团有限公司济南工务机械段济南250002

近年来,随着移动闪光焊轨车、气压焊轨车和快速换轨车的推广应用,钢轨大修施工进一步实现了机械化水平的突破,不仅提高了作业效率,同时也相应降低了劳动强度,成果较为显著。相较于直线段,曲线地段换轨车换轨施工的工艺控制和施工组织难... 详细信息

近年来,随着移动闪光焊轨车、气压焊轨车和快速换轨车的推广应用,钢轨大修施工进一步实现了机械化水平的突破,不仅提高了作业效率,同时也相应降低了劳动强度,成果较为显著。相较于直线段,曲线地段换轨车换轨施工的工艺控制和施工组织难度都大为增加,因此,聚焦京沪线曲线地段机械化换轨施工,从该线路状况、技术标准、施工方法、质量控制等方面对机械化钢轨大修施工工艺进行分析,以期提升机械化换轨作业的规范化、流程化、标准化,为机械化钢轨大修施工提供参考。

关键词：无缝线路曲线地段钢轨大修机械化工艺控制

在线全文

学校读者我要写书评

暂无评论

蒸汽锅炉联箱裂纹成因分析与对策

山西科技 2008年第2期23卷 152-153页

作者：王光武太原重型机械集团有限公司热力公司

锅炉受压元件工作特点为高温、高压、高应力、变载荷、介质的侵蚀。文章通过对一起蒸汽锅炉受压元件——联箱裂纹成因进行分析,提出了解决问题的措施和对策。

关键词：蒸汽锅炉联箱裂纹应力分析