检索范围:
排序: 展示方式:
《化学科学与工程前沿(英文)》 2023年 第17卷 第10期 页码 1484-1502 doi: 10.1007/s11705-023-2331-y
关键词: polysulfone blend modification ultrafiltration membrane formation hydrodynamics poly(ethylene-co-vinyl alcohol) copolymer
Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG
《结构与土木工程前沿(英文)》 2013年 第7卷 第1期 页码 83-88 doi: 10.1007/s11709-012-0148-8
关键词: granular solid hydrodynamics unbound granular material (UGM) triaxial tests
Nano thermo-hydrodynamics method for investigating cell membrane fluidity
YANG Yang, LIU Jing
《能源前沿(英文)》 2008年 第2卷 第2期 页码 121-128 doi: 10.1007/s11708-008-0033-2
关键词: responsible phenomenological phenomena modes–lateral diffusion differentiation
Alluvial channel hydrodynamics around tandem piers with downward seepage
Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR
《结构与土木工程前沿(英文)》 2020年 第14卷 第6期 页码 1445-1461 doi: 10.1007/s11709-020-0648-x
关键词: scour seepage Strouhal number tandem arrangement turbulent characteristics
Hossein ASADI KALAMEH, Arash KARAMALI, Cosmin ANITESCU, Timon RABCZUK
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 101-110 doi: 10.1007/s11709-012-0160-z
关键词: smoothed particle hydrodynamics high velocity impact sensitivity analysis
Xu-Dong ZHANG, Yue SUN, Sen CHEN, Jing LIU
《能源前沿(英文)》 2018年 第12卷 第2期 页码 276-296 doi: 10.1007/s11708-018-0545-3
关键词: liquid metal hybrid fluid hydrodynamics surface tension applied fields self-actuation
Mona EBRAHIMIFAKHAR, Elmira MOHSENZADEH, Sadegh MORADI, Mostafa MORAVEJI, Mahmoud SALIMI
《化学科学与工程前沿(英文)》 2011年 第5卷 第4期 页码 455-462 doi: 10.1007/s11705-011-1116-x
关键词: airlift reactor gas holdup liquid circulation velocity bubbly flow computational fluid dynamics (CFD)
Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH
《结构与土木工程前沿(英文)》 2018年 第12卷 第3期 页码 412-424 doi: 10.1007/s11709-017-0432-8
The subject of present study is the application of mesh free Lagrangian two-dimensional non-cohesive sediment transport model applied to a two-phase flow over an initially trapezoidal-shaped sediment embankment. The governing equations of the present model are the Navier-Stocks equations solved using Weakly Compressible Smoothed Particle Hydrodynamics (WCSPH) method. To simulate the movement of sediment particles, the model considers a powerful two-part technique; when the sediment phase has rigid behavior, only the force term due to shear stress in the Navier-Stokes equations is used for simulation of sediment particles’ movement. Otherwise, all the Navier-Stokes force terms are used for transport simulation of sediment particles. In the present model, the interactions between different phases are calculated automatically, even with considerable difference between the density and viscosity of phases. Validation of the model is performed using simulation of available laboratory experiments, and the comparison between computational results and experimental data shows that the model generally predicts well the flow propagation over movable beds, the induced sediment transport and bed changes, and temporal evolution of embankment breaching.
关键词: WCSPH method non-cohesive sediment transport rheological model two-part technique two-phase dam break
Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
《信息与电子工程前沿(英文)》 2019年 第20卷 第1期 页码 76-87 doi: 10.1631/FITEE.1800557
Our study is concerned with the time-varying formation tracking problem for second-order multi-agent systems that are subject to unknown nonlinear dynamics and external disturbance, and the states of the followers form a predefined time-varying formation while tracking the state of the leader. The total uncertainty lumps the unknown nonlinear dynamics and the external disturbance, and is regarded as an extended state of the agent. To estimate the total uncertainty, we design an extended state observer (ESO). Then we propose a novel ESO based time-varying formation tracking protocol. It is proved that, under the proposed protocol, the ESO estimation error and the time-varying formation tracking error can be made arbitrarily small. An application to the target enclosing problem for multiple unmanned aerial vehicles (UAVs) verifies the effectiveness and superiority of the proposed approach.
关键词: Multi-agent system Time-varying formation Formation tracking Nonlinear dynamics Extended state observer (ESO)
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 203-214 doi: 10.1007/s11465-017-0421-6
Predictive models for machining operations have been significantly improved through numerous methods in recent decades. This study proposed a 3D finite element modeling (3D FEM) approach for the micro end-milling of Al6061-T6. Finite element (FE) simulations were performed under different cutting conditions to obtain realistic numerical predictions of chip flow, burr formation, and cutting forces. FE modeling displayed notable advantages, such as capability to easily handle any type of tool geometry and any side effect on chip formation, including thermal aspect and material property changes. The proposed 3D FE model considers the effects of mill helix angle and cutting edge radius on the chip. The prediction capability of the FE model was validated by comparing numerical model and experimental test results. Burr dimension trends were correlated with force profile shapes. However, the FE predictions overestimated the real force magnitude. This overestimation indicates that the model requires further development.
关键词: 3D finite element modeling micro end-milling cutting force chip formation burr formation
《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1494-3
• A Passive Aeration Ditch was developed to treat decentralized wastewater.
关键词: Decentralized wastewater Passive aeration ditch Biofilm formation C/N ratio Salinity Model simulation
Is atmospheric oxidation capacity better in indicating tropospheric O formation?
《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1544-5
● This study summarizes and evaluates different approaches that indicate O3 formation.
关键词: O3 AOC O3 formation regime
Formation mechanism and modeling of surface waviness in incremental sheet forming
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0679-1
关键词: surface waviness incremental sheet forming numerical simulation formation mechanism deformation history
New insights into the formation of ammonium nitrate from a physical and chemical level perspective
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1737-6
● Factor analysis of ammonium nitrate formation based on thermodynamic theory.
关键词: Ammonium nitrate formation Thermodynamic theory Aerosol liquid water content Source apportionment
《化学科学与工程前沿(英文)》 2022年 第16卷 第12期 页码 1743-1750 doi: 10.1007/s11705-022-2184-9
关键词: standard enthalpy of formation polycyclic aromatic hydrocarbons connectivity based hierarchy high-precision calculation
标题 作者 时间 类型 操作
, antifouling, and permeation properties of polysulfone ultrafiltration membrane: thermodynamic and formation
期刊论文
Application of granular solid hydrodynamics to a well-graded unbound granular material undergoing triaxial
Shixiong SONG, Qicheng SUN, Feng JIN, Chuhan ZHANG
期刊论文
Alluvial channel hydrodynamics around tandem piers with downward seepage
Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR
期刊论文
High velocity impact of metal sphere on thin metallic plate using smooth particle hydrodynamics (SPH)
Hossein ASADI KALAMEH, Arash KARAMALI, Cosmin ANITESCU, Timon RABCZUK
期刊论文
Unconventional hydrodynamics of hybrid fluid made of liquid metals and aqueous solution under applied
Xu-Dong ZHANG, Yue SUN, Sen CHEN, Jing LIU
期刊论文
CFD simulation of the hydrodynamics in an internal air-lift reactor with two different configurations
Mona EBRAHIMIFAKHAR, Elmira MOHSENZADEH, Sadegh MORADI, Mostafa MORAVEJI, Mahmoud SALIMI
期刊论文
Application of a weakly compressible smoothed particle hydrodynamics multi-phase model to non-cohesive
Rasoul MEMARZADEH, Gholamabbas BARANI, Mahnaz GHAEINI-HESSAROEYEH
期刊论文
Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
期刊论文
3D finite element prediction of chip flow, burr formation, and cutting forces in micro end-milling of
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
期刊论文
Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD
期刊论文
New insights into the formation of ammonium nitrate from a physical and chemical level perspective
期刊论文