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Parameter study on numerical simulation of corner separation in LMFA-NACA65 linear compressor cascade

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Chinese Journal of Aeronautics 2017年第1期30卷 15-30页

作者： Gao Feng Ma Wei sun jinjing Jérome Boudet Xavier Ottavy Liu Yangwei Lu Lipeng Shao Liang National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics School of Energy and Power Engineering Beihang University Beijing 100191 China Department of Mechanical Engineering Sciences University of Surrey Guildford GU2 7XH UK School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai 200240 China Laboratoire de Mecanique des Fluides et d'Acoustique Ecole Centrale de Lyon Ecully 69134 France

Large-eddy simulation（LES） is compared with experiment and Reynolds-averaged Navier-Stokes（RANS）, and LES is shown to be superior to RANS in reproducing corner separation in the LMFA-NACA65 linear compressor cascade, in terms of surface limiting streamlines,blade pressure coefficient, total pressure losses and blade suction side boundary layer profiles. However, LES is too expensive to conduct an influencing parameter study of the corner *** approach, despite over-predicting the corner separation, gives reasonable descriptions of the corner separated flow, and is thus selected to conduct a parametric study in this paper. Two kinds of influencing parameters on corner separation, numerical and physical parameters, are analyzed and discussed： second order spatial scheme is necessary for a RANS simulation; incidence angle and inflow boundary layer thickness are found to show the most significant influences on the corner separation among the parameters studied; unsteady RANS with the imposed inflow unsteadiness（inflow angle varying sinusoidally with fluctuating amplitude of 0.92°） does not show any non-linear effect on the corner separation.

关键词： Corner separation Influencing parameter LES Linear compressor cascade RANS

An exon skipping in a SEPALLATA-Like gene is associated with perturbed floral and fruits development in cucumber

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Journal of Integrative Plant Biology 2016年第9期58卷 766-771页

作者： Xin Wang Dongli Gao jinjing sun Min Liu YaoYao Lun Jianshu Zheng Shenhao Wang Qingzhi Cui Xiaofeng Wang Sanwen Huang State Key Laboratory of Crop Stress Biology for Arid Areas College of HorticultureNorthwest A&F UniversityYangling 712100China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops Ministry of AgricultureInstitute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural SciencesShenzhen 518120China Vegetable Research Institute Hunan Academy of Agricultural SciencesChangsha 410125China

Summary We isolated a mutant showing perturbations in the development of male and female floral organs and fruits. Analysis of the single nucleotide polyTnorphisms from bulked F2 pools identified the causative variant occurring in Csa4G126690. Csa4G126690 shows high homol- ogy to Arobidopsis 5EPALLATA2 （SEP2） thus being desig- nated CsSEP2. The causative variant was located on the splicing site of CsSEP2, resulting in the skipping of exon 6 and abolishment of the transcriptional activity. Our data suggest that CsSEP2 is involved in the floral organ and fruits development by conferring transcriptional activity.

关键词： Cucumis sativus L EMS mutant exon skipping floral and fruits development whole genome re-sequencing

Engineering Non-transgenic Gynoecious Cucumber Using an Improved Transformation Protocol and Optimized CRISPR/Cas9 System

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Molecular Plant 2017年第12期10卷 1575-1578页

作者： Bowen Hu Dawei Li Xin Liu Jingjing Qi Dongli Gao Shuqiao Zhao Sanwen Huang jinjing sun Li Yang Key Laboratory of Genome Analysis of the Ministry of Agriculture Agricultural Genomics Institute at Shenzhen Chinese Academy of Agricultural Sciences Shenzhen 518120 China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops Ministry of Agriculture Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China Gembloux Agro-Bio Tech University of Liege Liege 4000 Belgium College of Horticulture Northwest A&F University Yangling Shaanxi 712100 China College of Life Sciences Nanjing Agricultural University Nanjing 210095 China

Dear Editor,Gynoecism has been extensively exploited in cucumber breeding. The utilization of a gynoecious line permits earlier pro- duction of hybrids, higher yield, and more concentrated fruit set. In addition, the utilization of a gynoecious line eliminates the need for hand emasculation and reduces the labor cost of crossing （Robinson, 2000）. Therefore, the development of gynoeoious inbred lines is instrumental for cucumber breeding. Gynoecious inbreds can be produced by selection from crosses of monoecious inbreds, or can arise spontaneously from natural variation. However, both methods have disadvantages. For instance, the time-consuming and laborious process of crossing can also lead to the introduction of undesirable traits,

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Control of Corner Separation by Optimized Slot Configuration in a Linear Compressor Cascade

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风机技术 2016年第6期58卷 9-18页

作者： jinjing sun Yangwei Liu Lipeng Lu Xavier OTTAVY School of Energyand Power Engineering Beihang University Laboratoirede Mecaniquedes Fluidesetd’Acoustique Ecole Centralede Lyon

为控制压气机叶片吸力面与端壁处所形成的三维角区分离,本文在叶根处引入了从压力面到吸力面的槽道来控制角区分离流动。基于利用优化算法对叶根处槽道几何的优化结果,本文通过数值模拟和实验来分析槽道在不同进口攻角下对角区分离的控... 详细信息

为控制压气机叶片吸力面与端壁处所形成的三维角区分离,本文在叶根处引入了从压力面到吸力面的槽道来控制角区分离流动。基于利用优化算法对叶根处槽道几何的优化结果,本文通过数值模拟和实验来分析槽道在不同进口攻角下对角区分离的控制效果。本文通过对比原始和开槽叶栅中总压损失、静压升和三维角区分离特征表明叶根处引入的槽道对角区分离有明显的控制效果。

关键词：压气机角区分离叶根开槽被动控制

Dynamic Analysis of Single Pile in Liquefied Soils Considered as Newtonian Fluid

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Open Journal of Geology 2021年第2期11卷 19-37页

作者： jinjing sun Xinlei Zhang Zhihua Wang Hongmei Gao Lian Xu The 3rd Geological Brigade of Jiangsu Geology & Mineral Exploration Bureau Nanjing China Urban Underground Space Research Center Nanjing Tech University Nanjing China

Case histories have shown that the liquefaction-induced soil lateral spreading is one of the main causes of damage to pile foundations subjected to seismic loading. Post-liquefaction soil behaves similarly to a viscous fluid. This study investigated the effect of soil lateral spreading on a single pile based on fluid mechanics in which the liquefied soils were treated as Newtonian fluids. A numerical simulation on a single pile embedded in a fully saturated sandy foundation was conducted and compared with shake table tests. The lateral flow effect and the effect of shear strain rate were discussed. After liquefaction, the acceleration of the foundation shows that there are no obvious spikes and finally reaches a stable state. The presented method can predict the pile response better than p-y curve method. A parametric study was performed to explore the effect of several influence factors on pile behaviors. The results show that the pile head displacement decreases and the maximum bending moment at pile bottom increases with the increase of bending stiffness. With the same pile bending stiffness, the displacement and bending moment of pile increase with the increase of soil viscosity and acceleration amplitude.

关键词： Pile Liquefaction-Induced Lateral Spreading Newtonian Fluid CFD Method

An ACC Oxidase Gene Essential for Cucumber Carpel Development

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Molecular Plant 2016年第9期9卷 1315-1327页

作者： Huiming Chen jinjing sun Shuai Li Qingzhi Cui Huimin Zhang Fengjiao Xin Huaisong Wang Tao Lin Dongli Gao Shenhao Wang Xia Li Donghui Wang Zhonghua Zhang Zhihong Xu Sanwen Huang Hunan Vegetable Research Institute Hunan Academy of Agricultural Sciences Changsha 410125 China Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural Genomicsinstitute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China Agricultural Genomic Institute at Shenzhen Chinese Academy of Agricultural Sciences Shenzhen 518120 China Institute of Agricultural Product Processing Chinese Academy of Agricultural Sciences Beijing 100193 China College of Life Sciences Peking University Beijing 100871 China These authors contributed equally to this article

Sex determination in plants gives rise to unisexual flowers that facilitate outcrossing and enhance genetic diversity. In cucumber and melon, ethylene promotes carpel development and arrests sta- men development. Five sex-determination genes have been identified, including four encoding 1-aminocyclopropane-l-carboxylate （ACC） synthase that catalyzes the rate-limiting step in ethylene biosynthesis, and a transcription factor gene CmWIP1 that corresponds to the Mendelian locus gynoecious in melon and is a negative regulator of femaleness. ACC oxidase （ACO） converts ACC into ethylene; how- ever, it remains elusive which ACO gene in the cucumber genome is critical for sex determination and how CmWIP1 represses development of female flowers. In this study, we discovered that mutation in an ACO gene, CsAC02, confers androecy in cucumber that bears only male flowers. The mutation disrupts the enzymatic activity of CsAC02, resulting in 50% less ethylene emission from shoot tips. CsAC02 was ex- pressed in the carpel primordia and its expression overlapped with that of CsACS11 in female flowers at key stages for sex determination, presumably providing sufficient ethylene required for proper CsACS2 expression. CmAC03, the ortholog of CsACO2, showed a similar expression pattern in the carpel region, suggesting a conserved function of CsACO2/CmACO3. We demonstrated that CsWlP1, the ortholog of CmWlP1, could directly bind the promoter of CsAC02 and repress its expression. Taken together, we propose a presumably conserved regulatory module consisting of WlP1 transcription factor and ACO controls unisexual flower development in cucumber and melon.

关键词： cucumber sex determination carpel development ACC oxidase

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一种旋转振动圆柱获取能量的参数化研究

机械工程学报 2020年第22期56卷 142-147页

作者：崔致斐孙槿静许斌黄典贵上海理工大学能源与动力工程学院上海200093

提出一种旋转振动圆柱从潮流能中主动获取能量的方法。基于Fluent软件的用户自定义函数求解旋转振动圆柱升力,采用动网格技术对一定速度下的旋转振动圆柱获取潮流能进行数值模拟研究。参照相关试验结果,进行数值模拟结果确认,得到的最... 详细信息

提出一种旋转振动圆柱从潮流能中主动获取能量的方法。基于Fluent软件的用户自定义函数求解旋转振动圆柱升力,采用动网格技术对一定速度下的旋转振动圆柱获取潮流能进行数值模拟研究。参照相关试验结果,进行数值模拟结果确认,得到的最大升力系数幅值与平均阻力系数幅值与试验结果基本吻合。分析相位差、振幅比及转动幅值对旋转振动圆柱获能效率的影响。结果表明,同振幅比、同转动幅值的旋转振动圆柱,能量利用率都是随着相位差先逐渐增大后减小;同相位差、同转动振幅的旋转振动圆柱,在有效获能范围,其振幅比越大则能量利用率越高;同相位差、同振幅比的旋转振动圆柱,随着转动幅值的增加,其能量利用率先逐渐增加后减小;当相位差为243°,转动幅值为3,振幅比为2.0时,能量利用率最高。

关键词：潮流能旋转振动圆柱振幅比能量利用率相位差

花器官发育B类基因AP3同源基因在几种葫芦科植物单性花发育过程中的作用研究

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园艺学报 2019年第8期46卷 1604-1615页

作者：蔡广华路洪凤黄三文孙进京西北农林科技大学园艺学院陕西杨凌712100 中国农业科学院蔬菜花卉研究所北京100081 中国农业科学院深圳农业基因组研究所广东深圳518120

前期研究发现黄瓜花器官发育B类基因CsAP3可以通过调控乙烯受体基因CsETR1表达量参与雌花中雄蕊滞育而形成雌花的过程。本试验中进一步对丝瓜、苦瓜、甜瓜、西瓜、美洲南瓜和印度南瓜中的AP3同源基因进行了分析。利用简并PCR方法得到了... 详细信息

前期研究发现黄瓜花器官发育B类基因CsAP3可以通过调控乙烯受体基因CsETR1表达量参与雌花中雄蕊滞育而形成雌花的过程。本试验中进一步对丝瓜、苦瓜、甜瓜、西瓜、美洲南瓜和印度南瓜中的AP3同源基因进行了分析。利用简并PCR方法得到了丝瓜和苦瓜中AP3同源基因序列,并根据已发表的基因组序列信息得到了甜瓜、西瓜、美洲南瓜和印度南瓜中AP3同源基因序列。分析发现这几个物种中AP3蛋白C端短GV重复序列编码区存在同义突变,表明该基因可能在形成雌性花的演化过程中具有保守功能。凝胶阻滞和烟草瞬时表达体系双荧光试验表明,甜瓜、西瓜和印度南瓜的AP3同源蛋白均具有结合ETR1同源基因启动子并调控其表达的潜力。这些结果为研究葫芦科雌性花发育调控机制提供了新的入手点,为揭示葫芦科植物雌性花起源提供了重要信息。

关键词：葫芦科单性花 AP3同源基因乙烯受体

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新媒体环境下高校德育话语权探索

学理论 2016年第12期 238-240页

作者：孙金晶丁慧民合肥工业大学马克思主义学院

新媒体时代下网络计算机技术不断发展,使得信息的传播和接受也不同于传统媒体。信息具有开放性、大众性、及时性和复杂性,这些新特点虽然给高校德育提供了更多的教育内容和素材,但是也给高校德育带来了很多的困难和冲击。因此培育大学... 详细信息

新媒体时代下网络计算机技术不断发展,使得信息的传播和接受也不同于传统媒体。信息具有开放性、大众性、及时性和复杂性,这些新特点虽然给高校德育提供了更多的教育内容和素材,但是也给高校德育带来了很多的困难和冲击。因此培育大学生社会主义的道德观和政治观势在必行。

关键词：新媒体高校德育意识形态性话语权