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petrov分布式文件系统的设计与实现

石油地球物理勘探 2019年第3期54卷 641-649,489页

作者：盛秀杰金之钧彭成景妍中国石化石油勘探开发研究院

为了实现可存储ZB级文件数量、单一文件TB级大小的行业基础数据的需求,以及利于实践'端到端'的、驱动油气重大发现的'地质智能'深度学习解决方案,本文设计、开发并验证了一种充分考虑油气勘探行业基础数据特点的分布式文件系统(petrov D... 详细信息

为了实现可存储ZB级文件数量、单一文件TB级大小的行业基础数据的需求,以及利于实践'端到端'的、驱动油气重大发现的'地质智能'深度学习解决方案,本文设计、开发并验证了一种充分考虑油气勘探行业基础数据特点的分布式文件系统(petrov Distributed File System,petrov DFS)。结合全球地理网格剖分编码和地质信息编码,petrov DFS建立了基于空间位置索引的分布式文件命名、分配与管理机制,可高效管理ZB级数量的文件并快速定位;基于ST-Based KIDA元数据建模下的本地空间数据库集成机制和空间索引、八叉树切分、空间键值对等三种分布式数据子块存储机制,可快速读写一个TB量级基础数据。petrov DFS具有'地理位置相近、存储位置相近'的特点——同一地理区域的基础数据存储于同一数据中心的同一批机柜,在提升本地基础数据的访问和计算速度的基础上,能'就近'高效利用不同类型基础数据。以440GB叠前地震数据文件的分布式存储、全时窗频率振幅属性分布式计算为例,利用C++泛化编程技术实现的petrov DFS可有效部署于当前普通计算机中,为后续深入实践不同类型深度学习解决方案提供新的、可行的大数据存储模式。

关键词：地质智能地理网格剖分八叉树子块空间键值对 petrov DFS

Professor Yuri V. petrov

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Journal of Rock Mechanics and Geotechnical Engineering 2015年第5期7卷 612-612页

Professor Yuri V. petrov （born January 27, 1958） graduated fromLeningrad （St. Petersburg） State University in 1980. He obtained hisPh.D. degree from Leningrad （St.-Petersburg） State University in 1985and ***. degree from the Russian Academy of Sciences （RAS） in *** 2006, Professor petrov was elected to serve as a CorrespondingMember of the RAS. Currently he holds the positions of the head ofDepartment of Extreme States of Materials and Structures, Institutefor Problems in Mechanical Engineering of the RAS.

关键词： petrov Professor Yuri V

THE p-VERSION OF FINITE ELEMENT METHODS FOR STEADY VISCOELASTIC FLOWS BETWEEN ECCENTRIC ROTATING CYLINDERS

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Journal of Hydrodynamics 1999年第3期11卷 19-26页

作者： Lu Zhu min Department of Mechanics, Zhejiang University, Hangzhou 310027, P.R.China Wang Lin xiang State Key Laboratory for Fluid Power Transmission & Control, Zhejiang University, Hangzhou 310027, P.R.China Fan Yu run Department of Mechanics,

The steady state, two dimensional creeping flow of an upper convected Maxwell (UCM) fluid between two eccentric cylinders, with the inner one rotating,is computed by p version of EVSS/SUPG finite element method. The solutions converge as the polynomial order of the approximation increases. An upper Deborah number (De) limit attains 30 (p≤5). With De increasing, The boundary layers form and develop in the stress, which match closely with those predicted by asymptotic analysis. The results show that numerical oscillations is caused by the boundary layers of stress and can be reduced by increasing the polynomial order of the approximation.

关键词： streamline upwind petrov Galerkin (SUPG) formulation elastic viscous split stress (EVSS) method viscoelastic flows eccentric cylinders

A Krylov Space-Based Finite Element Time Domain Method for Broadband Frequency Domain Solutions

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Open Journal of Acoustics 2017年第4期7卷 95-104页

作者： Weiyang Lin Independent Researcher Huntsville AL USA

A Krylov space based time domain method for wave propagation problems is introduced. The proposed method uses the Arnoldi algorithm to obtain broad-band frequency domain solutions. This method is especially advantageous in cases where slow convergence is observed when using traditional time domain methods. The efficiency of the method is examined in several test cases to show its fast convergence in such problems.

关键词： Time Domain Method Krylov Space Frequency Domain petrov Galerkin