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On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM
null
《机械工程前沿(英文)》 2014年 第9卷 第3期 页码 270-280 doi: 10.1007/s11465-014-0303-0
An analysis has been performed to study the problem of magneto-hydrodynamic (MHD) squeeze flow of an electrically conducting fluid between two infinite, parallel disks. The analytical methods called Homotopy Analysis Method (HAM) and Homotopy Perturbation Method (HPM) have been used to solve nonlinear differential equations. It has been attempted to show the capabilities and wide-range applications of the proposed methods in comparison with a type of numerical analysis as Boundary Value Problem (BVP) in solving this problem. Also, the velocity fields have been computed and shown graphically for various values of physical parameters. The objective of the present work is to investigate the effect of squeeze Reynolds number, Hartmann number and the suction/injection parameter on the velocity field. Furthermore, the results reveal that HAM and HPM are very effective and convenient.
关键词: Homotopy Analysis Method Homotopy Perturbation Method incompressible flow magneto-hydrodynamic flow parallel disks
Krishnendu BHATTACHARYYA, G. C. LAYEK
《化学科学与工程前沿(英文)》 2011年 第5卷 第4期 页码 471-476 doi: 10.1007/s11705-011-1130-z
关键词: slip flow MHD boundary layer reactive solute diffusion flat plate suction/injection
Krishnendu Bhattacharyya
《化学科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 376-384 doi: 10.1007/s11705-011-1121-0
关键词: MHD boundary layer unsteady flow heat transfer thermal radiation heat source/sink shrinking sheet suction/injection
Prediction of hydro-suction dredging depth using data-driven methods
《结构与土木工程前沿(英文)》 2021年 第15卷 第3期 页码 652-664 doi: 10.1007/s11709-021-0719-7
关键词: sedimentation water resources dam engineering machine learning heuristic
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 74-84 doi: 10.1007/s11465-018-0490-1
Compared with conventional injection molding, injection-compression molding can mold optical parts with higher precision and lower flow residual stress. However, the melt flow process in a closed cavity becomes more complex because of the moving cavity boundary during compression and the nonlinear problems caused by non-Newtonian polymer melt. In this study, a 3D simulation method was developed for injection-compression molding. In this method, arbitrary Lagrangian-Eulerian was introduced to model the moving-boundary flow problem in the compression stage. The non-Newtonian characteristics and compressibility of the polymer melt were considered. The melt flow and pressure distribution in the cavity were investigated by using the proposed simulation method and compared with those of injection molding. Results reveal that the fountain flow effect becomes significant when the cavity thickness increases during compression. The back flow also plays an important role in the flow pattern and redistribution of cavity pressure. The discrepancy in pressures at different points along the flow path is complicated rather than monotonically decreased in injection molding.
关键词: injection-compression molding simulation injection molding melt flow cavity pressure
density measurement for plastic injection molding via ultrasonic technology
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0714-2
关键词: ultrasonic measurement melt density in-situ measurement injection molding
Trend prediction technology of condition maintenance for large water injection units
Xiaoli XU, Sanpeng DENG
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 171-175 doi: 10.1007/s11465-009-0091-0
关键词: water injection units condition-based maintenance trend prediction
Intelligent methods for the process parameter determination of plastic injection molding
Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 85-95 doi: 10.1007/s11465-018-0491-0
Injection molding is one of the most widely used material processing methods in producing plastic products with complex geometries and high precision. The determination of process parameters is important in obtaining qualified products and maintaining product quality. This article reviews the recent studies and developments of the intelligent methods applied in the process parameter determination of injection molding. These intelligent methods are classified into three categories: Case-based reasoning methods, expert system-based methods, and data fitting and optimization methods. A framework of process parameter determination is proposed after comprehensive discussions. Finally, the conclusions and future research topics are discussed.
关键词: injection molding intelligent methods process parameters optimization
Trung Tinh LE, Yu-Jun CUI, Juan Jorge MU?OZ, Pierre DELAGE, Anh Minh TANG, Xiang-Ling LI
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 160-170 doi: 10.1007/s11709-011-0106-x
关键词: Oedometer tensiometer swelling physicochemical and mechanical effects stress/suction coupling soil plasticity
《能源前沿(英文)》 2023年 第17卷 第5期 页码 678-691 doi: 10.1007/s11708-022-0859-z
关键词: gasoline compression ignition injection strategy fuel stratification high efficiency high load
CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage
《能源前沿(英文)》 2023年 第17卷 第3期 页码 428-445 doi: 10.1007/s11708-023-0865-9
关键词: shale gas gas injection competitive adsorption enhanced shale gas recovery CO2 geological storage
Experimental study of stratified lean burn characteristics on a dual injection gasoline engine
Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG
《能源前沿(英文)》 2022年 第16卷 第6期 页码 900-915 doi: 10.1007/s11708-021-0812-6
关键词: dual injection stratified lean burn gasoline engine particulate matter emission combustion analysis
Stability analysis of layered slopes in unsaturated soils
Guangyu DAI; Fei ZHANG; Yuke WANG
《结构与土木工程前沿(英文)》 2022年 第16卷 第3期 页码 378-387 doi: 10.1007/s11709-022-0808-2
关键词: slope stability suction stress unsaturated soil layered slope limit equilibrium
Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 96-106 doi: 10.1007/s11465-018-0498-6
A three-stage molding process involving microcellular injection molding with core retraction and an “out-of-mold” expansion was developed to manufacture thermoplastic polyurethane into lightweight foams of varying local densities, microstructures, and mechanical properties in the same microcellular injection molded part. Two stages of cavity expansion through sequential core retractions and a third expansion in a separate mold at an elevated temperature were carried out. The densities varied from 0.25 to 0.42 g/cm3 (77% to 62% weight reduction). The mechanical properties varied as well. Cyclic compressive strengths and hysteresis loss ratios, together with the microstructures, were characterized and reported.
关键词: thermoplastic polyurethane microcellular injection molding cavity expansion compressive strength hysteresis loss ratio
标题 作者 时间 类型 操作
On the MHD squeeze flow between two parallel disks with suction or injection via HAM and HPM
null
期刊论文
Magnetohydrodynamic slip flow and diffusion of a reactive solute past a permeable flat plate with suction/injection
Krishnendu BHATTACHARYYA, G. C. LAYEK
期刊论文
heat source/sink on unsteady MHD boundary layer flow and heat transfer over a shrinking sheet with suction/injection
Krishnendu Bhattacharyya
期刊论文
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
期刊论文
Trend prediction technology of condition maintenance for large water injection units
Xiaoli XU, Sanpeng DENG
期刊论文
Intelligent methods for the process parameter determination of plastic injection molding
Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI
期刊论文
Studying the stress-suction coupling in soils using an oedometer equipped with a high capacity tensiometer
Trung Tinh LE, Yu-Jun CUI, Juan Jorge MU?OZ, Pierre DELAGE, Anh Minh TANG, Xiang-Ling LI
期刊论文
methodology for regulating fuel stratification and improving fuel economy of GCI mode via double main-injection
期刊论文
Experimental study of stratified lean burn characteristics on a dual injection gasoline engine
Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG
期刊论文