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CURVILINeAR PATHS AND TRUST ReGION MeTHODS WITH NONMONOTONIC BACK TRACKING TeCHNIQUe FOR UNCONSTRAINeD OPTIMIZATION

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Journal of computational Mathematics 2001年第3期19卷 241-258页

作者： De-tong Zhu (Department of Mathematics, shanghai Normal University, shanghai 200234, china) 上海师范大学上海 200234

Focuses on a study which examined the modification of type approximate trust region methods via two curvilinear paths for unconstrained optimization. Properties of the curvilinear paths; Description of a method which combines line search technique with an approximate trust region algorithm; Information on the convergence analysis; Details on the numerical experiments.

关键词： curvilinear paths trust region methods nonmonotonic technique unconstrained optimization

NUMeRICAL INVeSTIGATION ON THe AeROeLASTIC BeHAVIOR OF AN AIRSHIP WITH HULL-FIN CONFIGURATION

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Journal of Hydrodynamics 2010年第2期22卷 207-213页

作者： LIU Jian-min LU Chuan-jing - XUe Lei-ping Marine engineering Institute Jimei University Xiamen 361021 China School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240China State Key Laboratory of Ocean engineering Shanghai Jiao Tong University Shanghai 200030 China

Numerical investigation was conducted on an airship of hull-fin configuration for aerodynamic and aeroelastic characteristics in three-dimensional viscous *** mathematical model was built and the corresponding numerical code was developed for the fluid-structure interaction *** governing equations of the viscous flow with LL-Low Reynolds modified model were solved by the standard SIMPLe algorithm based on the finite volume method.A fluid-structure coupled method was employed to solve the nonlinear aeroelasticity problem for the *** computational results of the viscous flow are in good agreement with the experimental *** simulation on the aeroelastic behavior of the airship in a trimmed flight reveals the effect of structure flexibility on the aerodynamic performance.

关键词： fluid-structure interaction airship aeroelasticity flexibility

A Numerical Study on the Non-Newtonian Problem

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A Numerical Study on the Non-Newtonian Problem

Classification and origin of natural gases from Lishui Sag,the east china Sea Basin

全国计算机物理学会第六届年会和学术交流会

作者： HOU,Lei~(1,3) QIU,Lin~(2,3) (1.Dept.of Mathematics,shanghai University,shanghai 200444,china 2.Dept.of Mathematics,shanghai Jiaotong University,shanghai 200030,china 3.division of computational science e-Institute of shanghai universities\\at sjtu,shanghai 200240,china)

By use of standard term in material physics,we may analyze the special feature of the non-Newtonian equation,for the resistance to the normal impact (?) which gives best estimate of the stress over-shoot for the elong...

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science china earth sciences 2008年第S1期51卷 122-130页

作者： CHeN JianPing 1,2 ,Ge HePing 3 ,CHeN XiaoDong 3 ,DeNG ChunPing 1,2 &LIANG DiGang 1,2 1 Research Institute of Petroleum exploration&Development,Petrochina,Beijing 100083,china 2 Key Lab of Petroleum Geochemistry,CNPC,Beijing 100083,china 3 shanghai division,CNOOC,shanghai 200030,china 1. Research Institute of Petroleum exploration & Development PetroChina Beijing 100083 China2. Key Lab of Petroleum Geochemistry CNPC Beijing 100083 China3. Shanghai Division CNOOC Shanghai 200030 China

Natural gases discovered up to now in Lishui Sag,the east china Sea Basin,differ greatly in gaseous compositions,of which hydrocarbon gases amount to 2%―94%while non-hydrocarbon gases are dominated by *** hydrocarbon gases,without exception,contain less than 90%of methane and over 10%of C2 + heavier hydrocarbons,indicating a wet *** isotopic analyses on these hydrocarbon gases showed thatδ13C 1 ,δ13C 2 andδ13C 3 are basically lighter than-44‰,-29‰and-26‰, *** difference in carbon isotopic values between methane and ethane is great,suggesting a biogenic oil-type gas produced by the mixed organic matter at peak generation.δ13C CO2 values of nonhydrocarbon gases are all heavier than-10‰,indicating a typical abiogenic *** simulation experiment on hydrocarbon generation of organic matter in a closed gold-tube system showed that the proportion of methane in natural gases produced by terrigenous organic matter in the Lingfeng Formation marine deposit is obviously higher than that in natural gases derived from the aquatic and terrigenous mixed organic matter in the Yueguifeng Formation lacustrine deposit,consequently the proportion of heavier hydrocarbons of the former is remarkably lower than that of the ***, δ13C 1 values of natural gases produced by terrigenous organic matter in the Lingfeng Formation marine deposit are about 5‰heavier than those of natural gases derived from the aquatic and terrigenous mixed organic matter in the Yueguifeng Formation lacustrine deposit whileδ13C 2 andδ13C 3 values of the former are over 9‰heavier than those of the *** the LS36-1 oil-gas pool is the only commercial oil-gas reservoir in Lishui Sag,where carbon isotopic compositions of various hydrocarbon components differ greatly from those of natural gases produced by the Lingfeng Formation organic matter but are very similar to those of natural gases derived from the Yueguifeng Formation organic matter,therefore,natural gases in the

关键词： Lishui Sag natural gas biogenesis abiogenesis lacustrine source rock marine source rock coal-measures source rock

THe INITIAL-BOUNDARY VALUe PROBLeMS OF NONLINeAR AND NONLOCAL SINGULARLY PeRTURBeD ReACTION DIFFUSION SYSTeM

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Annals of Differential equations 2008年第1期24卷 20-28页

作者： Liu Shude~1 Chen Lihua~2 Mo Jiaqi~(1,3) (1.Dept.of Math.,Anhui Normal University,Wuhu 241000,Anhui 2.Dept.of Math.,Fuqing Branch of Fujian Normal University,Fuqing 350300,Fujian 3.division of computational science,e-institutes of shanghai universities,at sjtu,shanghai 200240)

In this paper the initial-boundary value problem for nonlocal singularly perturbed reaction diffusion system are *** the iterative method and the compa- rison theorem,the existence and asymptotic behavior of the solut... 详细信息

关键词： reaction diffusion system singular perturbation initial boundary value problem

IL-12p40 is not required for islet allograft rejection

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Acta Pharmacologica Sinica 2006年第8期27卷 1065-1070页

作者： en-guang BI~(2,5) Wei SHI~(3,5) Jia ZOU~2 Zhen-hua HAO~3 Zhen-hu LI~2 Duan CAI~3 Hua-qun ZHANG~3 Bing SUN~(2,4,6) ~2Laboratory of Molecular Cell Biology shanghai institutes for Biological sciences,Chinese Academy of sciences,Graduate School of the Chinese Academy of sciences,shanghai 200031,china ~3the Huashan Hospital of Fudan University,shanghai 200040,china ~4e-institutes of shanghai universities Immunology division,shanghai 200025.china Laboratory of Molecular Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of Sciences Shanghai 200031 China

Aim:To investigate whether IL-12p40 plays a crucial role in regulating islet al-lograft rejection in a streptozotocin(STZ)-induced diabetes mouse ***:C57BL/6 and IL-12p40 gene knockout mice were selected as recipient mice,towhich the diabetes was induced with a treatment of STZ(150-200 mg/kg)by asingle ip ***/c mice were selected as donor mice and islet cells wereisolated from the *** 500 islets were transplanted into recipient mice be-neath the capsule of the left *** the islet transplantation the glu-cose from the mice sera was monitored and the rejection rate of islets was ***:STZ could induce diabetes in the recipient mice within 1 *** of allograft islets,the increased glucose in wild-type(WT)micereturned to normal level and was maintained for 10 ***,the rejectionrate of islet allograft between IL-12p40-deficient mice and WT mice was ***:The results suggested that,although islet allograft rejection is be-lieved to be Th1-cell predominant,the Th1 response inducer,IL-12 and IL-23 arenot essential to induce islet allograft rejection.

关键词： Th1 cells Th2 cells islets of Langerhans transplantation homologous transplantation IL-12p40-deficient mice

Chimney effect Assessment of the Double-skin Facade

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湖南大学学报（自然科学版） 2009年第S1期36卷 146-150页

作者： QIU Zhong-zhu1,LI Peng2,CHOW Tin-tai3,ReN Jian-xing1,WANG Wen-huan1(1.School of energy & environment engineering,shanghai University of electric Power,shanghai 20090,china 2.School of Mechanical engineering,Tongji University,shanghai 200092,china 3.division of Building science & Technology,City University of Hong Kong,Hong Kong SAR,china) School of energy and environment engineering Shanghai University of Electric Power Shanghai 200090 China School of Mechanical engineering Tongji University Shanghai 200092 China division of Building science and Technology City University of Hong Kong Hong Kong Hong Kong

The mathematic model of heat transfer through ventilated double glazing was verified with the measured data,which were from a test chamber equipped with glass face temperature,solar radiation,ambient temperature,and wind speed measurement *** the model validation,the double-skin facade assessment was carried out through simulation with eSP-r software integrating thermal simulation and air low net work *** air flow situation in the air gap was analyzed on the basis of the hourly air velocity simulation data within typical winter week,summer week,spring week and autumn *** differences of chimney effect in different seasons were discussed,and the thermal loads resulted from the ventilated and unventilated double skin facade were presented.

关键词： chimney effect assessment double-skin facade

Wholly smoothing cutter orientations for five-axis NC machining based on cutter contact point mesh

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science china(Technological sciences) 2010年第5期53卷 1294-1303页

作者： BI QingZhen,WANG YuHan,ZHU LiMin & DING Han State Key Laboratory of Mechanical System and Vibration,School of Mechanical engineering,shanghai Jiaotong University,shanghai 200240,china 1. State Key Laboratory of Mechanical System and Vibration School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200240 China

Cutting forces with respect to different cutter orientations are analyzed for five-axis NC machining of a ball-end cutter.A measure is then defined to quantify the effects of cutter orientation *** to the measure,a novel model and algorithm are proposed to wholly optimize cutter orientations based on a cutter contact(CC) point *** method has two *** is that the cutter orientation smoothnesses along the feed direction and pick-feed direction are both wholly *** other is that only the accessibility cones of mesh points are required to compute and the computation efficiency is *** advantages are shown by simulating the machining efficiency,the stability of feed velocities and the smoothness of cutting force.A computational example and a cutting experiment are finally given to illustrate the validity of the proposed method.

关键词： five-axis machining tool path accessibility cone cutter orientation

NUMeRICAL SOLUTION FOR TIDAL FLOW IN OPeNING CHANNeL USING COMBINeD MACCORMACK-FINITe ANALYSIS MeTHOD

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Journal of Hydrodynamics 2009年第4期21卷 505-511页

作者： WU Zhao-chun WANG Dao-zeng shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China School of Construction and Safety engineering Shanghai Institute of Technology Shanghai 200235 China

A new numerical scheme for solving the tidal flow in an opening channel using the advective-diffusion shallow-water equations as the governing equations is proposed based on the combination of the MacCormack and the finite analysis methods. In the present scheme, the finite analysis method is used to discretize the momentum equation and the MacCormack technique is used to discretize the continuity equation in a single grid system. The matrix of the discretized momentum equation is characterized by predominantly main diagonal elements, which ensures favorable convergence and stability for the numerical simulation by the combined method. To verify the present method, hydraulics simulation is carried out for a section down mainstream of the Huangpu River. The computational results agree with the measured data. By use of orthogonal curvilinear coordinate system, the methods can be easily extended to the numerical simulation of the tidal flow in a tortuous channel.

关键词： MacCormack technique finite analysis method tidal flow shallow water equation numerical simulation