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Analysis of 2D Flow and Heat Transfer Modeling in Fracture of Porous Media

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Journal of Thermal Science 2017年第4期26卷 331-338页

作者： GUO Chunsheng NIAN Xianbo LIU Yong QI Chao song jinsheng YU Wenhe Dynamics and mechanical&electrical equipment engineering technology research center Shandong UniversityWeihaiShandong264209China State Key Laboratory of Petroleum Pollution Control Beijing102206China

Heat and mass transfer between porous media and fluid is a complex coupling process, which is widely used in various fields of engineering applications, especially for natural and artificial fractures in oil and gas extraction. In this study, a new method is proposed to deal with the flow and heat transfer problem of steady flow in a fracture. The fluid flow in a fracture was described using the same method as Mohais, who considered a fracture as a channel with porous wall, and the perturbation method was used to solve the mathematical model. Unlike previous studies, the shear jump boundary condition proposed by Ochoa-Tapia and Whitaker was used at the interface between the fluid and porous media. The main methods were perturbation analysis and the application of shear jump boundary conditions. The influence of permeability, channel width, shear jump degree and effective dynamic viscosity on the flow and heat transfer in the channel was studied by analysing the analytical solution. The distribution of axial velocity in the channel with the change of the typical parameters and the sensitivity of the heat transfer was obtained.

关键词： Heat and Mass Transfer Fracture Porous Media Stress Jump Boundary Condition Analytical Solution

HER2 gene status and the relationship with p21 protein expression in gastric cancer

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The Chinese-German Journal of Clinical Oncology 2011年第3期10卷 162-165页

作者： Yongjie Li Yangkun Wang Xianwei Zhang Fulin Li Nianlong Meng Xutao Yuan jinsheng song Henan Province People＇s Hospital of Ruyang County Ruyang 471200 China Department of Laboratory The 150 Centre Hospital of Chinese PLA Luoyang 471031 China

Objective： We aimed to analysis the HER2 gene status and its relationship with p21 protein expression in gastric carcinoma. Methods： Fluorescence in situ hybridisation （FISH） and immunohistochemistry （IHC） techniques were used to detect HER2 gene status and p53 protein in 59 cases of gastric cancer. Results： FISH detection of HER2 gene amplification rate was 16.9% （10/59）, HER2 gene amplification in 49 cases without copy number gain and gene amplification were a total of 49.2% （29/59）. HER2 protein expression was 42.4% （25/59）, HER2 gene amplification rates in patients with ＋＋＋, ＋＋ HER2 protein expression were 3/3 and 5/8, while in patients with ＋ HER2 protein expression, it was 2/14, there was significant difference （P 0.05）. p21 protein expression rate was 49.2% （29/59）, HER2 gene amplification rates and p21 protein expression had significant difference in tumor invasion depth, lymph node metastasis （P 0.05）; had no statistical significance in histological type, age, gender differences （P 0.05）. Conclusion： HER2 gene amplification rate and gene copy number had positively correlation with p21 protein expression, HER2 gene status and expression of p21 protein combined detection can provide a reference value in gastric cancer metastasis, patient’s condition development and prognosis, it also can guide clinical development of individual treatment.

关键词： stomach cancer HER2 gene p21 protein expression

“马鞍型”环八四噻吩-三嗪体系的合成与聚集诱导发光(AIE)性质研究

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有机化学 2018年第5期38卷 1119-1125页

作者：张卫杰徐莉宋金生马志英王华河南大学纳米材料工程研究中心开封475004 河南大学化学化工学院开封475004

以"马鞍型"环八四噻吩(COTh)与1,3,5-三嗪为构筑模块,通过Kumada类型反应有效地制备了三种分别含有1~3个COTh结构单元的环八四噻吩-三嗪衍生物,即2,4-二甲氧基-6-(5,8,11-三甲基硅基)-环八[1,2-b:4,3-b':5,6-b'':8,7-b''']四噻吩-1,3,5-三嗪(1),2-甲氧基-4,6-二{(5,8,11-三甲基硅基)-环八[1,2-b:4,3-b':5,6-b'':8,7-b''']四噻吩}-1,3,5-三嗪(2)和2,4,6-三{(5,8,11-三甲基硅基)-环八[1,2-b:4,3-b':5,6-b'':8,7-b''']四噻吩}-1,3,5-三嗪(3).理论计算表明了该类化合物的长波长的两个吸收峰来自于分子内的电荷转移(CT)吸收.在溶液相它们发射分子内电荷转移(ICT)态荧光,峰位在560~570nm.而在冻结态下呈双荧光发射,即短波长的环八四噻吩本征态发光(400 nm)与长波长的ICT发光(480~500 nm).在四氢呋喃(THF)-H2O二元溶剂体系中,该类化合物产生聚集诱导发光(AIE)现象,可能与化合物分子同时受分子内旋转受阻(RIR)与分子内振动受阻(RIV)机制控制有关.单晶数据表明,化合物1分子内噻吩环与三嗪环之间呈现近平面构象.相邻分子之间噻吩环上的碳原子与三嗪环上的碳原子存在C-C相互作用,制约着连接分子内噻吩环与三嗪环之间单键的自由旋转,从而一定程度上制约了非辐射失活过程,有利于AIE现象的产生.

关键词：环八四噻吩 1,3,5-三嗪晶体结构聚集诱导发光

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海底输气管道泄漏扩散可视化仿真软件开发

西安石油大学学报（自然科学版） 2019年第2期34卷 117-122,126页

作者：宋金升刘超李长江肖文生中国石油大学(华东)机电工程学院山东青岛266580 海洋物探及勘探设备国家工程实验室山东青岛266580

为实现海底输气管道泄漏扩散结果的实时可视化仿真,对海底输气管道泄漏扩散可视化仿真软件进行了结构分析与功能模块划分,以数值模拟实验为基础建立了海底输气管道泄漏扩散模型数据库,编写Matlab程序读取数据库信息并进行简化处理,生成... 详细信息

为实现海底输气管道泄漏扩散结果的实时可视化仿真,对海底输气管道泄漏扩散可视化仿真软件进行了结构分析与功能模块划分,以数值模拟实验为基础建立了海底输气管道泄漏扩散模型数据库,编写Matlab程序读取数据库信息并进行简化处理,生成了泄漏气体扩散影响范围数据点矩阵。使用统计学方法,并引入边界曲线拟合系数对泄漏影响范围边界进行曲线拟合,实现了对泄漏气体影响范围的实时判断。在此基础上,使用Matlab/C++混合编程方法,完成了海底输气管道泄漏扩散可视化仿真软件设计及开发。

关键词：海底输气管道泄漏扩散可视化仿真混合编程软件开发

Tectonic modes of mantle convection and their implications for Earth's tectonic evolution based on three-dimensional numerical simulations

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Science China Earth Sciences 2025年第1期68卷 270-296页

作者： song XIANG Jinshui HUANG Bingcheng WU School of Earth and Space Sciences University of Science and Technology of China CAS Center of Excellence in Comparative Planetary Studies

Five tectonic modes of mantle convection are obtained and analyzed with three-dimensional numerical models in a spherical shell domain. The five tectonic convective modes are non-plate mobile-lid, plate-like mobile-lid, episodic plate-like mobile-lid, episodic stagnant-lid, and stagnant-lid convective modes, respectively. The typical characteristics of these five tectonic modes and their numerical classification criteria based on plateness, mobility, and their standard deviations are presented and discussed. The results show that the yield stress of the lithosphere has profound effects on the tectonic convective *** the gradual increase of yield stress, the tectonic mode of mantle convection changes from one to another sequentially through the aforementioned five modes. Additionally, as the Rayleigh number increases, the range of yield stress for the platelike mobile-lid convective mode decreases, and the dimensionless transition stress between different tectonic modes ***, the dimensional transition stress between the non-plate mobile-lid convective mode and plate-like mobile-lid convective mode increases with the increase of Rayleigh number, but decreases between other tectonic modes. Furthermore, we find that the transition stress between different tectonic modes is inversely proportional to the internal heating rate, with the transition stress decreasing as the internal heating rate increases. The fitting analysis of the transition stress between tectonic modes shows that Earth's current plate tectonics correspond to a lithospheric yield stress of 150–250 MPa, which aligns with the strength of serpentinized mantle rock determined by experimental petrography. If the Archean mantle was 300°C warmer than it is today, then the Earth was in an episodic stagnant-lid convective mode. The tectonic evolution of the Earth's surface is closely related to the lithospheric strength and the process of thermal evolution. If the lithospheric strength w

关键词： Tectonic mode of mantle convection Plate-like mobile-lid convection Episodic plate-like mobile-lid convection Episodic stagnant-lid convection Plate tectonics and tectonic evolution of the Earth

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铝车轮多层加热炉导风系统的设计

金属热处理 2019年第6期44卷 220-224页

作者：陈润哲李贤君张文良宋金升北京机电研究所有限公司

为保证铝车轮多层加热炉炉膛内流场均匀和工件温度场均匀,对炉内导风系统进行了研究,利用有限元软件对多层加热炉不同设计方案下的导风系统,进行了模拟分析,优化了设计方案,获得了较佳的流场与温度场。结果表明,分别在第二层与第三层车... 详细信息

为保证铝车轮多层加热炉炉膛内流场均匀和工件温度场均匀,对炉内导风系统进行了研究,利用有限元软件对多层加热炉不同设计方案下的导风系统,进行了模拟分析,优化了设计方案,获得了较佳的流场与温度场。结果表明,分别在第二层与第三层车轮附近的导流板上各增加一个导风口与导流圆弧板,且当两层圆弧板尺寸分别为100 mm和150 mm时,炉膛内流场较均匀,各层工件温度均匀性较佳。

关键词：多层热处理加热炉数值模拟导风结构优化导流板尺寸

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锻造铝合金轮毂动态淬火过程的数值模拟

金属热处理 2019年第10期44卷 213-218页

作者：宋金升张文良李贤君陈润哲罗平机械科学研究总院集团有限公司北京100044

使用计算流体力学(Computational fluid dynamic,CFD)方法,考虑沸腾传热及两相流动,采用三维动网格技术对锻造6061铝合金轮毂入水淬火冷却处理的动态过程进行了多物理场耦合模拟。模拟得到了淬火水槽内流体的流场与系统整体温度场,在此... 详细信息

使用计算流体力学(Computational fluid dynamic,CFD)方法,考虑沸腾传热及两相流动,采用三维动网格技术对锻造6061铝合金轮毂入水淬火冷却处理的动态过程进行了多物理场耦合模拟。模拟得到了淬火水槽内流体的流场与系统整体温度场,在此基础上分析了侧边与底部冷却喷管对轮毂淬火温度分布均匀性的影响及轮毂在淬火过程中的温度变化。结果表明:该模拟方法能够反应淬火过程的流场与温度场变化,侧边与底部冷却喷口能够对轮毂均匀降温,该工况下多轮毂同时冷却过程中各轮毂间的温度差异较小,轮毂温度变化曲线符合工艺要求。

关键词：锻造铝合金轮毂淬火 CFD 数值模拟

新结构四联噻吩:5,5'-二[2,5-二(三甲基硅)-3-噻吩]基-2,2'-联噻吩的合成与晶体结构(英文)

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河南大学学报（自然科学版） 2014年第1期44卷 34-39,49页

作者：王勇宋金生史建武王华河南大学特种功能材料重点实验室河南开封475004 河南大学化学化工学院环境与分析科学研究所河南开封475004

一种结构明确的新结构四联噻吩化合物:5,5'-二[2,5-二(三甲基硅)-3-噻吩]基-2,2'-联噻吩(1)被有效合成出来。以2,3'-联噻吩(4)为建筑模块,通过NBS选择性溴代高产率得到5-溴-2,3'-联噻吩(5),进而通过氯化铜氧化偶联有效的合成出1。本文... 详细信息

一种结构明确的新结构四联噻吩化合物:5,5'-二[2,5-二(三甲基硅)-3-噻吩]基-2,2'-联噻吩(1)被有效合成出来。以2,3'-联噻吩(4)为建筑模块,通过NBS选择性溴代高产率得到5-溴-2,3'-联噻吩(5),进而通过氯化铜氧化偶联有效的合成出1。本文还对目标产物的单晶结构和紫外吸收光谱进行了分析。

关键词： 2,3'-联噻吩四联噻吩合成晶体结构紫外可见光谱

锰基催化剂低温选择催化还原处理NO_x的研究现状与展望

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材料导报 2017年第11期31卷 38-43,50页

作者：解智博宋艳军梁金生薛刚孟军平孙剑锋河北工业大学生态环境与信息特种功能材料教育部重点实验室天津300130 河北工业大学能源与环保材料研究所天津300130

锰基催化剂具有较高的催化活性,且成本低,在选择性催化还原(SCR)尾气中的NO_x领域具有广阔应用前景。介绍了锰基低温SCR催化剂处理NO_x的最新进展。锰基催化剂可分为两类:锰氧化物催化剂和锰基掺杂过渡金属氧化物催化剂。针对锰氧化物... 详细信息

锰基催化剂具有较高的催化活性,且成本低,在选择性催化还原(SCR)尾气中的NO_x领域具有广阔应用前景。介绍了锰基低温SCR催化剂处理NO_x的最新进展。锰基催化剂可分为两类:锰氧化物催化剂和锰基掺杂过渡金属氧化物催化剂。针对锰氧化物催化剂,主要分析了锰的氧化价态、结晶形态、比表面积以及形态学对催化效果的影响;对于锰基掺杂过渡金属氧化物催化剂,重点分析了掺杂物对催化剂的催化能力、催化温度范围、N_2的选择性和抗SO_2、H_2O毒化能力的影响。最后在总结全文的基础上,展望了锰基催化剂的应用前景。

关键词：选择性催化还原低温锰氧化物脱硝