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Coupled Aerodynamic and Hydrodynamic Analysis of Floating Offshore Wind Turbine Using CFD Method

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Transactions of Nanjing University of Aeronautics and Astronautics 2016年第1期33卷 80-87页

作者： Wu Jun Meng Long Zhao Yongsheng he yanping State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240P.R.China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) Shanghai 200240P.R.China School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240P.R.China

To simulate floating offshore wind turbine(FOWT)in coupled wind-wave domain via CFD method,the NREL 5MW wind turbine supported by the OC3-Hywind Spar platform is modeled in the STAR-CCM+ *** on the Reynolds-averaged Navier-Stokes(RANS)equations and re-normalisation group(RNG)k-εturbulence model,the rotor aerodynamic simulation for wind turbine is *** results agree well with the NREL *** advantage with the volume of fluid(VOF)method and dynamic fluid body interaction(DFBI)technology,the dynamic responses of the floating system with mooring lines are simulated under the coupled wind-wave sea *** free-decay tests for rigid-body degrees of freedom(DOFs)in still water and hydrodynamic tests in a regular wave are performed to validate the numerical model by comparing its result with the results simulated by ***,the simulations of the overall FOWT system in the coupled wind-wave flow field are carried *** relationship between the power output and dynamic motion responses of the platform is *** numerical results show that the dynamic response of wind turbine performance and platform motions all vary in the same frequency as the inlet *** platform motion,the power output of wind turbine is more sensitive than the thrust *** study may provide some reference for further research in the coupled aero-hydro simulation of FOWT.

关键词： floating offshore wind turbine(FOWT) computational fluid dynamics(CFD) aerodynamic perform ance dynamic fluid body interaction

Numerical Simulation of An Axial Flow Fan with Proper Aft Fins for Floating Wind Turbines Model Test

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Transactions of Nanjing University of Aeronautics and Astronautics 2016年第6期33卷 -页

作者： Yu Long Huang Chao Zhao Yongsheng he yanping State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration(CISSE) School of Naval Architecture Ocean & Civil EngineeringShanghai Jiao Tong University

It is difficult to generate homogeneous wind in model test for floating wind turbines,especially when using array of axial *** design and compare proper fins behind the blades for an axial fan to produce anti-twist flow based on the computational fluid dynamics(CFD).The result is promising and proves that suitable designed fins can be an effective solution.

关键词： homogeneous flow fins anti-twist flow CFD full scale

Poly(lactic acid)-aspirin microspheres prepared via the traditional and improved solvent evaporation methods and its application performances

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Chinese Journal of Chemical Engineering 2023年第8期60卷 194-204页

作者： Xiaolin Pan Mengyuan Gao Yun Wang yanping he Tian Si Yanlin Sun School of Chemical Engineering Kunming University of Science and TechnologyKunming 650504China

Drug-loaded microspheres are significant for the development of modern pharmaceutical products. It is well known that the taken of aspirin for long-term increases the risk of serious gastrointestinal complications, therefore a controllable delivery of aspirin is of importance to lighten those side effects. In this work, poly(lactic acid)(PLA) was chosen as the carrier to prepare PLA-aspirin microspheres by using the traditional and the improved solvent evaporation methods. It was found that no matter which experimental condition was, the encapsulation efficiency of aspirin was higher by using the improved method than that of the traditional method. Specifically, when the concentration of polyvinyl alcohol = 1%(mass),the polymer concentration = 1:20, the oil/water rate = 1:2.5, PLA-aspirin microspheres were obtained via the improved method with a high yield of 82.83%(mass) and an encapsulation efficiency of 44.09%. PLAaspirin microspheres were then prepared continuously using the improved method, which further enhanced the encapsulation efficiency to 54.56%. Approximate 85% aspirin released from microspheres within 7 days. Obvious degradation which was represented by reduction on hardness was observed by soaking microspheres in PBS for 60 days. This work is of interest because it provides a continuous route to prepare PLA-aspirin microspheres continuously with a high drug encapsulation efficiency.

关键词： Aspirin Degradation Foam-transfer Microspheres Poly(lactic acid) Slow-release

Synthesis of melamine-formaldehyde microcapsules containing oil-based fragrances via intermediate polyacrylate bridging layers

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2574-2580页

作者： yanping he Shunzhi Yao JunzhengHao HongWang Linhua Zhu TianSi Yanlin Sun Jianhao Lin School of Chemical Engineering Kunming University of Science and TechnologyChenggong CampusKunming 650504China Faculty of Science Kunming University of Science and TechnologyChenggong CampusKunming 650504China

A general and versatile strategy to prepare melamine-formaldehyde(MF)microcapsules encapsulating oil-based fragrances by combining solvent evaporation and in situ polymerization was proposed in this *** oil-based fragrance was pre-encapsulated by an inner polyacrylate membrane via solvent evaporation,followed by in situ polymerization of MF precondensates as an outer *** polyacrylate membrane is used as an intermediate bridging layer to stabilize the oil-based fragrance,and to provide driving forces for in situ polymerization of MF precondensates through electrostatic attractions between carboxyl groups and ammonium *** was demonstrated that MF microcapsules containing clove oil were prepared *** amount and the composition of the intermediate polyacrylate bridging layer were *** and sphere-shaped MF-clove oil microcapsules were prepared when the weight ratio of polyacrylate to clove oil was over 60 wt%and the concentration of acrylic acid(AA)increased to 10 wt%in *** addition,MF microcapsules containing sunflower oil and hexyl salicylate were prepared by using this *** work suggests that this new approach can be potentially used to encapsulate various core materials,tuning the shell properties of microcapsules such as thickness,mechanical strength and release properties.

关键词： Melamine formaldehyde Microcapsule Oil-based fragrance Particle Polymers Synthesis

Analysis of minimum specific energy consumption and optimal transport concentration of slurry pipeline transport systems

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Particuology 2022年第7期20卷 38-47页

作者： Mingzhi Li yanping he Ruhong Jiang Ji Zhang Hongsheng Zhang Weihuang Liu Yadong Liu State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China Institute of Marine Equipment Shanghai Jiao Tong UniversityShanghai 200240China CheC Dredging Co. Ltd.Shanghai 200136China National Engineering Research Center of Dredging Shanghai 200120China

Slurry pipeline transport is widely used in several industrial *** the specific power consumption(SPC)and determining the best working conditions are important for the design and operation of transportation *** on the Shanghai Jiao Tong University high-concentration multi-sized slurry pressure drop(SJTU-HMSPD)pipeline-resistance-calculation model,the SJTU-SPC model for calculating the power required to transport a unit volume of solid materials over a unit pipeline length is established for a slurry transport *** said system demonstrates a uniformity coefficient in the 1.26–7.98 range,median particle size of 0.075–4 mm,particle volume concentration of 10–60%,and pipeline diameter of 0.203–0.8 *** results obtained were successfully verified against existing experimental *** influence of parameters,such as particle-gradation uniformity coefficient,median particle size,pipe diameter,and particle volume concentration,on the SPC were *** results revealed that the greater is the uniformity coefficient,the smaller is the minimum specific energy consumption and the larger the optimal transport concentration for a constant,median particle size *** observed,the optimal transport concentration for broad-graded sand equalled approximately 48%.These results supplement the conclusions of existing research,indicating that the optimal transport concentration is approximately 30%and provides theoretical support for high concentration transportation of broad graded slurry.

关键词： Slurry pipeline transport system Specific power consumption Minimum specific energy consumption Optimal transport concentration

An efficient preparation of porous polymeric microspheres by solvent evaporation in foam phase

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Chinese Journal of Chemical Engineering 2021年第1期34卷 409-416页

作者： Yang Yu Guiying Li Wanqing Han Linhua Zhu Tian Si HongWang Yanlin Sun yanping he Faculty of Chemical Engineering Kunming University of Science and TechnologyChenggong CampusKunming 650504China Faculty of Science Kunming University of Science and TechnologyChenggong CampusKunming 650504China

This paper reports an efficient method of preparing porous polymeric microspheres by solvent evaporation in foam phase,in which phase separation between polymer and porogen occurs in foam phase instead of that in water phase by using the traditional solvent eva poration *** method provides outstanding features,including being time-saving,of high-yield and able for continuous production,in which formation of porous polymeric microspheres finished within 3 min with a high production yield up to approximate 95 wt% and the process was able to be developed into a continuous process for production of porous polymeric *** was also universal to non-crosslinked polymers since the method is a development on the traditional emulsion solvent evaporation *** new method is efficient and can be used potentially on the industrial scale for continuous production of porous polymeric microsphere s.

关键词： Continuous process Foam phase High-yield Polymer microsphere Solvent evaporation Time-saving

Photophysical and photosensitive properties of Elsinochrome A

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Chinese Science Bulletin 2006年第9期51卷 1050-1054页

作者： LI Cong he yanping OU Lingcheng TIAN Maojun YAO Zhikun GUO Mengbi Center for Advanced Studies of Medicinal and Organic Chemistry Chemical and Material Engineering Institute of Yunnan UniversityKunming 650091 China

In this paper, the photophysical and photosensitive properties of Elsinochrome A (EA), another member of perylenequinone photosensitizers derived via artificially biological synthesis, were stud- ied by taking hypocrellin A (HA) and hypocrellin B (HB) as the references. It was found that the quantum yield of singlet oxygen produced via the photosensi- tization of EA was 0.98 with HB (0.84) as a reference. Furthermore, the semiquinone anion could be pro- duced via photosensitization of EA in oxygen-free solution. Besides, taking advantage of nanosecond time-resolved spectral technique, the transient triplet absorption spectra and the lifetime of EA in cyclo- hexane were determined by the use of the ground- state depletion method.

关键词：荧光光谱感光性能单态氧吸收光谱半醌自由基负离子光敏剂

Research on Dynamic Response Characteristics of 6 MW Spar-Type Floating Offshore Wind Turbine

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Journal of Shanghai Jiaotong university(Science) 2018年第4期23卷 505-514页

作者： MENG Long he yanping ZHOU Tao ZHAO Yongsheng LIU Yadong State Key Laboratory of Ocean Engineerin Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploratio School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

A 6 MW spar-type floating offshore wind turbine （FOWT） model is put forward and a fully coupled aero-hydro-servo-elastic time domain model is established in the fatigue, aerodynamics, structures and turbulence （FAST） code. Influence rules of wind 10ad and wave load on the characteristics of 6 MW spar-type FOWT are investigated. Firstly, validation of the model is carried out and a satisfactory result is obtained. The maximal deviations of rotor thrust and power between simulation results and reference values are 4.54% and -2.74%, respectively. Then the characteristics, including rotor thrust, rotor power, out-of-plane blade deflection, tower base fore-aft bending moment, and mooring line tension, are researched. The results illustrate that the mean value of dynamic response characteristics is mainly controlled by the wind-induced action. For characteristics of tower base fore-aft bending moment and platform pitch motion, the oscillation is dominated by the wave-induced action during all conditions considered. For characteristics of out-of-plane blade tip deflection and mooring line tension, the oscillation is commanded by combination effect of wave and wind loads when the wind speed is lower than the rated wind speed （hereinafter referred to as below rated wind speed） and is controlled by the wave-induced action when the wind speed is higher than the rated wind speed （hereinafter referred to as above rated wind speed）. As to the rotor thrust and power, the oscillation is dominated by the wind induced action at below rated wind speed and by the combination action of wind and wave loads at above rated wind speed. The results should be useful to the detailed design and model basin test of the 6 MW spar-type FOWT.

关键词： floating offshore wind turbine(FOWT) time domain response wind and wave loads dynamic response characteristics

基于三苯胺类多羧酸配体构筑的3例金属有机框架材料

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科学通报 2016年第16期61卷 1781-1789,1-2页

作者：何燕萍张健中国科学院福建物质结构研究所结构化学国家重点实验室福州350002

三苯胺类多羧酸有机配体因在光电功能材料领域表现优异而受到学者广泛地关注.本文选择一个具有纳米尺寸臂长的配体三(4′-羧基联苯基)胺(H_3TPA),在不同的反应条件下,分别与MnCl_2·4H_2O,Cu(NO_3)_2·6H_2O和Co(NO_3)_2·6H_2O反应,合... 详细信息

三苯胺类多羧酸有机配体因在光电功能材料领域表现优异而受到学者广泛地关注.本文选择一个具有纳米尺寸臂长的配体三(4′-羧基联苯基)胺(H_3TPA),在不同的反应条件下,分别与MnCl_2·4H_2O,Cu(NO_3)_2·6H_2O和Co(NO_3)_2·6H_2O反应,合成了3例结构新颖的金属有机框架(MOF)材料,[Mn(HTPA)(DMA)]_n·x G(FIR-31,DMA=N,N-二甲基乙酰胺,G=客体分子),[(Me_2NH_2)(Cu(TPA)]_n·x G(FIR-32),[(Co_3(TPA)_2(TMEA)_2]_n·x G(FIR-33,TMEA=N,N,N′-三甲基乙二胺).X射线单晶衍射结果表明,FIR-31是由双核[Mn_2(COO)_4]次级构筑单元(SBU)通过未完全脱质子的HTPA2-配体桥联形成的二维(4,4)-sql层状结构;FIR-32则是一个具有(3,6)-kgd拓扑网络的阴离子型二维层,其SBU为双核的[Cu_2(COO)_6];而FIR-33是由三核[Co_3(COO)_6]SBU构筑的具有(3,6)-kgd拓扑类型的二维层结构.

关键词：金属-有机框架材料三苯胺类多羧酸配体过渡金属离子合成晶体结构