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《化学科学与工程前沿(英文)》 2022年 第16卷 第6期 页码 874-885 doi: 10.1007/s11705-021-2131-1
关键词: discrete element method cohesive materials parameter calibration ring shear cell design of experiments
A state-of-the-art review of solar passive building system for heating or cooling purpose
Arun Kumar NANDA,C K PANIGRAHI
《能源前沿(英文)》 2016年 第10卷 第3期 页码 347-354 doi: 10.1007/s11708-016-0403-0
关键词: HVAC heating cooling solar heating carbon dioxide (CO2) emissions
Zhijun LI, Zichen DENG
《结构与土木工程前沿(英文)》 2009年 第3卷 第2期 页码 111-116 doi: 10.1007/s11709-009-0022-5
关键词: discrete-time variable structure control composite reaching law chattering effect saturated control law
A district heating system based on absorption heat exchange with CHP systems
Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,
《能源前沿(英文)》 2010年 第4卷 第1期 页码 77-83 doi: 10.1007/s11708-010-0022-0
关键词: cogeneration district heating absorption heat exchange Co-ah cycle
Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR
《机械工程前沿(英文)》 2015年 第10卷 第3期 页码 263-276 doi: 10.1007/s11465-015-0345-y
In this research, the temperatures of three-dimensional (3D) protruding heaters mounted on a conductive substrate in a horizontal rectangular channel with laminar airflow are related to the independent power dissipation in each heater by using a matrix G+ with invariant coefficients, which are dimensionless. These coefficients are defined in this study as the conjugate influence coefficients (g+) caused by the forced convection-conduction nature of the heaters’ cooling process. The temperature increase of each heater in the channel is quantified to clearly identify the contributions attributed to the self-heating and power dissipation in the other heaters (both upstream and downstream). The conjugate coefficients are invariant with the heat generation rate in the array of heaters when assuming a defined geometry, invariable fluid and flow rate, and constant substrate and heater conductivities. The results are numerically obtained by considering three 3D protruding heaters on a two-dimensional (2D) array by ANSYS/FluentTM 15.0 software. The conservation equations are solved by a coupled procedure within a single calculation domain comprising of solid and fluid regions and by considering a steady state laminar airflow with constant properties. Some examples are shown, indicating the effects of substrate thermal conductivity and Reynolds number on conjugate influence coefficients.
关键词: channel flow conjugate forced convection-conduction cooling conjugate influence coefficients discrete heating invariant descriptor thermal management
A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method
Wu REN, Yunxin WU, Zhaowei ZHANG
《机械工程前沿(英文)》 2013年 第8卷 第4期 页码 360-366 doi: 10.1007/s11465-013-0280-8
Mobile concrete pump boom is typical multi-body large-scale motion manipulator. Due to posture constantly change in working process, kinematic rule and dynamic characteristic are difficult to solve. A dynamics model of a mobile concrete pump boom is established based on discrete time transfer matrix method (DTTMM). The boom system is divided into sub-structure A and sub-structure B. Sub-structure A is composed by the 1st boom and hydraulic actuator as well as the support. And sub-structure B is consists of the other three booms and corresponding hydraulic actuators. In the model, the booms and links are regarded as rigid elements and the hydraulic cylinders are equivalent to spring-damper. The booms are driven by the controllable hydraulic actuators. The overall dynamic equation and transfer matrix of the model can be assembled by sub-structures A and B. To get a precise result, step size and integration parameters are studied then. Next the tip displacement is calculated and compared with the result of ADAMS software. The displacement and rotation angle curves of the proposed method fit well with the ADAMS model. Besides it is convenient in modeling and saves time. So it is suitable for mobile concrete pump boom real-time monitoring and dynamic analysis. All of these provide reference to boom optimize and engineering application of such mechanisms.
关键词: multi-body mobile concrete pump boom discrete time transfer matrix method (DTTMM) kinematic dynamic tip displacement
Danhui DAN, Qianqing WANG, Jiongxin GONG
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 244-252 doi: 10.1007/s11709-021-0696-x
关键词: granular material vibration control discrete element method particle damper cable vibration
Impact of climate change on building heating energy consumption in Tianjin
Cao XIANG, Zhe TIAN
《能源前沿(英文)》 2013年 第7卷 第4期 页码 518-524 doi: 10.1007/s11708-013-0261-y
关键词: global warming office building heating energy consumption
Hui LI, Ruiqin LI, Jianwei ZHANG
《机械工程前沿(英文)》 2021年 第16卷 第2期 页码 353-362 doi: 10.1007/s11465-020-0620-4
关键词: sliding-mode control robot control discrete-time uncertain systems fuzzy logic
Discrete-event stochastic systems with correlated inputs: Modeling and performance evaluation
《工程管理前沿(英文)》 2022年 第9卷 第2期 页码 214-220 doi: 10.1007/s42524-022-0192-6
关键词: discrete-event stochastic system correlated input performance evaluation
Energy efficiency and carbon dioxide emissions reduction opportunities in district heating source in
Gaofeng CHEN, Xuejing ZHENG, Lin CONG
《能源前沿(英文)》 2012年 第6卷 第3期 页码 285-295 doi: 10.1007/s11708-012-0197-7
关键词: district heating energy efficiency baseline carbon abatement
Higher heating value prediction of torrefaction char produced from non-woody biomass
Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG
《能源前沿(英文)》 2015年 第9卷 第4期 页码 461-471 doi: 10.1007/s11708-015-0377-3
关键词: higher heating value correlation biomass proximate analysis ultimate analysis
Operating characteristic analysis on the ultra-thin low temperature floor-heating system
Hualing ZHANG, Xiaopeng SONG
《结构与土木工程前沿(英文)》 2013年 第7卷 第2期 页码 127-132 doi: 10.1007/s11709-013-0200-3
关键词: ultra-thin floor heating panel the preheating time thermal comfort energy saving
Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation
Zhengsheng Lu, Moran Wang, Mingkai Zhang, Ji Li, Ying Xu, Hanchang Shi, Yanchen Liu, Xia Huang
《环境科学与工程前沿(英文)》 2020年 第14卷 第3期 doi: 10.1007/s11783-020-1222-4
关键词: Sewer system Integrated control Discrete control Water level
标题 作者 时间 类型 操作
A “Sequential Design of Simulations” approach for exploiting and calibrating discrete element simulations
期刊论文
A state-of-the-art review of solar passive building system for heating or cooling purpose
Arun Kumar NANDA,C K PANIGRAHI
期刊论文
Improving existing “reaching law” for better discrete control of seismically-excited building structures
Zhijun LI, Zichen DENG
期刊论文
A district heating system based on absorption heat exchange with CHP systems
Lin FU, Yan LI, Yi JIANG, Shigang ZHANG,
期刊论文
An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in channel flow
Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR
期刊论文
A dynamic model of mobile concrete pump boom based on discrete time transfer matrix method
Wu REN, Yunxin WU, Zhaowei ZHANG
期刊论文
Application of coupled multi-body dynamics–discrete element method for optimization of particle damper
Danhui DAN, Qianqing WANG, Jiongxin GONG
期刊论文
Gained switching-based fuzzy sliding mode control for a discrete-time underactuated robotic system with
Hui LI, Ruiqin LI, Jianwei ZHANG
期刊论文
Energy efficiency and carbon dioxide emissions reduction opportunities in district heating source in
Gaofeng CHEN, Xuejing ZHENG, Lin CONG
期刊论文
Higher heating value prediction of torrefaction char produced from non-woody biomass
Nitipong SOPONPONGPIPAT,Dussadeeporn SITTIKUL,Unchana SAE-UENG
期刊论文
Operating characteristic analysis on the ultra-thin low temperature floor-heating system
Hualing ZHANG, Xiaopeng SONG
期刊论文