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中国洗涤用品工业 2024年第1期 46-49页

作者：刘晓臣焦提留陈波霍月青曹圣悌冀创新中国日用化学研究院有限公司山西太原030001 功能性表面活性剂山西省重点实验室山西太原030001 中轻化工绍兴有限公司浙江绍兴312369 中轻化工股份有限公司浙江杭州311215

本研究对采用SO3膜式磺化工艺制备的特种醇醚硫酸盐阴离子表面活性剂CYS-221进行了性能研究,测定了CYS-221的表面张力、泡沫、乳化、不同浓度产品黏度、毛细效应,并与常规阴离子表面活性剂AES、非离子表面活性剂AEO-9、1309进行了比较... 详细信息

本研究对采用SO3膜式磺化工艺制备的特种醇醚硫酸盐阴离子表面活性剂CYS-221进行了性能研究,测定了CYS-221的表面张力、泡沫、乳化、不同浓度产品黏度、毛细效应,并与常规阴离子表面活性剂AES、非离子表面活性剂AEO-9、1309进行了比较。结果表明:CYS-221泡沫低于AES、AEO-9、1309;CYS-221乳化能力优于AES、AEO-9、1309;CYS-221稀释过程凝胶区窄;经CYS-221处理后的坯布毛细效应高于AES和1309。

关键词：前处理阴离子表面活性剂泡沫毛细效应

Applications of survival functions to continuous semi-Markov processes for measuring reliability of power transformers

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Journal of Modern Power Systems and Clean Energy 2017年第6期5卷 959-969页

作者： Yifei WANG Mohammad SHAHIDEHPOUR chuangxin GUO School of Automation Guangdong University of TechnologyGuangzhou 510006China Galvin Center for Electricity Innovation Illinois Institute of TechnologyChicagoIL 60616USA College of Electrical Engineering Zhejiang UniversityHangzhou 310058China

The reliability of power transformers is subject to service age and health condition.This paper proposes a practical model for the evaluation of two reliability indices:survival function(SF)and mean residual life(MRL).In the proposed model,the periodical modeling of power transformers are considered for collecting the information on health conditions.The corresponding health condition is assumed to follow a continuous semi-Markov process for representing a state transition.The proportional hazard model(PHM)is introduced to incorporate service age and health condition into hazard rate.In addition,the proposed model derives the analytical formulas for and offers the analytical evaluation of SF and MRL.SF and MRL are calculated for new components and old components,respectively.In both cases,the proposed model offers rational results which are compared with those obtained from comparative models.The results obtained by the contrast of the proposed analytical method and the Monte Carlo method.The impact of differentmodel parameters and the coefficient of variation(CV)on reliability indices are discussed in the case studies.

关键词： Power system reliability Transformers Proportional hazard model Survival function Mean residual life Semi-Markov process

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海上低渗气藏压裂液优选实验研究

广东化工 2024年第9期51卷 28-30页

作者：刘创新李小凡高红艳夏瑜单理军左磊中海石油(中国)有限公司上海分公司

面对东海靶区工区面积大、井稀疏、非均质性较强的不利条件，结合现有压裂手段，利用控制变量法，对不同的压裂液配方体系进行减阻性能测定、表面张力测定、防膨性能测定、流变性能测定、破胶液配伍性测定与破胶液破乳率测定及压裂液伤... 详细信息

面对东海靶区工区面积大、井稀疏、非均质性较强的不利条件，结合现有压裂手段，利用控制变量法，对不同的压裂液配方体系进行减阻性能测定、表面张力测定、防膨性能测定、流变性能测定、破胶液配伍性测定与破胶液破乳率测定及压裂液伤害评价，优选出适合低渗气藏压裂液配方体系。并对优选出的压裂液配方体系进行压后岩石润湿性测试，根据实验结果，最终选择0.54%羟丙基瓜尔胶+0.1%助排剂A+0.1%助排剂B+0.05%黏土稳定剂A+0.1%黏土稳定剂B+0.1%的pH调节剂+0.24%高温破胶剂A作为最佳的东海A气藏压裂液配方体系。

关键词：低渗-致密气藏压裂液体系压裂液伤害压后润湿性控制变量

耦合粒子图像测速误差的连续伴随数据同化技术

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航空学报 2022年第5期43卷 231-242页

作者：邓志文何创新刘应征上海交通大学机械与动力工程学院动力机械与工程教育部重点实验室上海200240 上海交通大学燃气轮机研究院上海200240

提出了一种耦合粒子图像测速(PIV)实验误差的连续伴随数据同化算法,通过优化目标损失函数,增强算法在不同误差场景下的鲁棒性。为了验证该算法的有效性,先对已知PIV流场植入合成误差进行同化对比测试,继而对PIV互相关算法不同参数设置... 详细信息

提出了一种耦合粒子图像测速(PIV)实验误差的连续伴随数据同化算法,通过优化目标损失函数,增强算法在不同误差场景下的鲁棒性。为了验证该算法的有效性,先对已知PIV流场植入合成误差进行同化对比测试,继而对PIV互相关算法不同参数设置所获得的流场进行同化研究。结果表明:相比于原连续伴随数据同化,耦合PIV实验误差的同化算法能够对实验观测数据去伪存真,抗误差干扰能力明显提升,鲁棒性更强,能够对高误差场景下的流动数据进行更好地同化,准确地预测流场的真实分布规律,还原流场细节。

关键词： PIV 数据同化连续伴随算法 PIV实验误差平板绕流

TiO_(2)包覆高镍NCM811的电化学性能研究

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强激光与粒子束 2024年第2期36卷 161-166页

作者：叶创新宛传友瞿诗霞张俊林陈光巳陈志缘上海空间电源研究所空间电源全国重点实验室上海200245

高镍材料具有较好的电化学性能,但其存在着表面稳定性较差的问题,通过钛酸四丁酯在NCM811材料表面水解生成TiO_(2),改善了高镍材料的表面稳定性。利用SEM和TEM对改性后的材料进行表面分析,结果表明,实验成功将TiO_(2)层均匀地包覆在高镍... 详细信息

高镍材料具有较好的电化学性能,但其存在着表面稳定性较差的问题,通过钛酸四丁酯在NCM811材料表面水解生成TiO_(2),改善了高镍材料的表面稳定性。利用SEM和TEM对改性后的材料进行表面分析,结果表明,实验成功将TiO_(2)层均匀地包覆在高镍NCM811表面,并且发现,在表面包覆过程中,还发生了体相掺杂。利用表面包覆和体相掺杂的共同作用,在1C放电的条件下,循环200圈后,材料的容量保持率从81.40%提升至92.39%,改善了材料的电化学性能。

关键词：高镍材料三元材料表面包覆二氧化钛循环性能

An improved discrete artificial bee colony algorithm for the distributed permutation flowshop scheduling problem with preventive maintenance

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An improved discrete artificial bee colony algorithm for the...

第三十九届中国控制会议

作者： Jiayang Mao XiaoLu Hu Quan-ke Pa Zhonghua Miao chuangxin he M Fatih Tasgetiren School of Mechanical and Electrical Engineering and Automation Shanghai University China Rural Technology Development Center International logistics management department Yasar University

The distributed permutation flowshop scheduling problem with preventive maintenance operator（PM/DPFSP） is closely related to modern industry.This paper presents an improved discrete artificial bee colony（IDABC） algorithm for solving this problem.The criterion to be optimized is the makespan.An improved NEH heuristic method is proposed to initialize the population effectively.We adapted a local search method with insertion and swap operator to produce neighboring solutions in employ bee phase and onlooker bee phase.A global search method with destruction and reconstruction phase is introduced to avoid local optima in scout bee phase.The parameters for the proposed IDABC are calibrated by means of a design of experiments and analysis of variance.We conduct extensive experiments to test the performance of IDABC.Computational results indicate that IDABC has promising advantages on PM/DPFSP.

关键词： Distributed scheduling Flowshop Preventive maintenance Artificial bee colony

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出口分流装置对振荡射流流场的影响

空气动力学学报 2023年第4期41卷 104-115,I0002页

作者：杨帆温新何创新王士奇上海交通大学机械与动力工程学院叶轮机械研究所上海200240 中国空气动力研究与发展中心低速空气动力研究所绵阳621000 中国航空发动机集团有限公司中国航空发动机研究院北京101304

为了探究连续-离散脉冲式振荡器内部的流动过程及分流楔对出口峰值速度和振荡频率的影响,二维非定常模拟了五种工况下的两种分流距离的连续-离散脉冲式振荡器以及连续扫掠式振荡器的内部流场。结果表明:该类构型振荡器出口速度普遍具有... 详细信息

为了探究连续-离散脉冲式振荡器内部的流动过程及分流楔对出口峰值速度和振荡频率的影响,二维非定常模拟了五种工况下的两种分流距离的连续-离散脉冲式振荡器以及连续扫掠式振荡器的内部流场。结果表明:该类构型振荡器出口速度普遍具有三峰值特性,且当分流距离增长时第一峰值速度(U_(max,1,O))下降,第三峰值速度(U_(max,3,O))上升,而第二峰值速度(U_(max,2,O))受到的影响较小;当入口流量在一定范围内变化时,三峰值速度具有一定的大小关系:U_(max,3,O)>U_(max,1,O)>U_(max,2,O),其中U_(max,1,O)在入口流量过大或过小时,有随之同向变化的趋势。连续-离散脉冲式振荡器振荡频率随分流距离增长呈先降低后升高的变化趋势,但连续扫掠式振荡器始终最高且与前者的差值随流量增大而增大。研究中还发现,当分流距离增长或入口流量减小后,将使该类构型振荡器出口速度具有更多波动。该研究结果可为优化连续-离散脉冲式振荡器设计以及相关流动控制方案设计提供支撑。

关键词：流体振荡器离散出口数值模拟振荡频率峰值速度

An iterated greedy algorithm for the distributed permutation flowshop scheduling problem with preventive maintenance to minimize total flowtime

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An iterated greedy algorithm for the distributed permutation...

Effect of flapping trajectories on the dragonfly aerodynamics

第三十九届中国控制会议

作者： Jiayang Mao XiaoLu Hu Quan-ke Pan Zhonghua Miao chuangxin he M Fatih Tasgetiren School of Mechanical and Electrical Engineering and Automation Shanghai University China Rural Technology Development Center International logistics management department Yasar University

In recent years,the distributed permutation flowshop scheduling problem（DPFSP） has been widely studied.In this paper,we extended the DPFSP by considering preventive maintenance（PM） operation to prevent machines from breaking down after the long process.An iterated greedy（IG） algorithm is developed to minimize total flowtime.A heuristic with swapping operator is proposed to initialize the IG.After that,the destruction phase and construction phase are modified to fit our problem.A local search is then applied to further improve the solution generated in the construction stage.At last,a simple simulated annealing-like acceptance criterion is used to prevent local optimal situations.Comparison with three state-of-the art algorithms in the recent literature based on 225 instances shows the high performance of our IG algorithm for solving the DPFSP with PM operation.

关键词： Distributed scheduling Flowshop Preventive maintenance

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Chinese Science Bulletin 2006年第7期51卷 777-784页

作者： XU Jinliang ZHAO chuangxin ZHANG Yongli ZHANG Yang Micro Energy System Laboratory Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou 510640 China Graduate School of Chinese Academy of Sciences Beijing 100039 China Department of Mechanical Engineering Aerospace and Manufacturing Division University of Manchester 561000 UK

The effects of translational, figure-eight and double-figure-eight flapping trajectories on the dragonfly aerodynamics were numerically studied by solving the Navier-Stokes equations. There is a common characteristic regarding the lift/drag force coefficients that the downstroke flapping provides the lift forces while the upstroke flapping creates the thrust forces for different flapping trajectories. The maximum lift force coefficient exceeds five for the translational trajectory. It is greater than six for the figure-eight and double-figure-eight flapping trajecto- ries, which is sufficiently larger than unity under the steady state flight condition. The ellipse and dou- ble-figure-eight flapping trajectories yield the de- crease of the lift force, while the figure-eight flapping trajectory yields higher lift force as well as the thrust force than the translational flapping one. During the insect flight, the wing flapping status should be changed instantaneously to satisfy various require- ments. Study of the flapping trajectories on the insect aerodynamics is helpful for the design of the Mi- cro-air-vehicles (MAVs).

关键词：蜻蜓升力曳力空气动力学 CFD 计算流体力学