检索范围:
排序: 展示方式:
Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces
REN Hesheng, LAI Lingjun, CUI Yongzheng
《能源前沿(英文)》 2008年 第2卷 第4期 页码 374-380 doi: 10.1007/s11708-008-0079-1
关键词: coefficient dimensionless longitudinal longitudinal temperature conduction
Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH
《机械工程前沿(英文)》 2020年 第15卷 第2期 页码 279-293 doi: 10.1007/s11465-019-0575-5
关键词: isogeometric shape optimization design-dependent boundary condition transient heat conduction implicit time integration adjoint method
Dongqiang LEI, Yucong REN, Zhifeng WANG
《能源前沿(英文)》 2022年 第16卷 第6期 页码 1048-1059 doi: 10.1007/s11708-020-0670-7
关键词: parabolic trough receiver vacuum annulus rarefied gas DSMC (direct simulation Monte Carlo) heat loss
Ping ZHANG, Guoliang DING
《能源前沿(英文)》 2010年 第4卷 第4期 页码 535-541 doi: 10.1007/s11708-010-0113-y
关键词: algorithm convergence heat exchanger modeling transient
崔秀国,张劲军
《中国工程科学》 2003年 第5卷 第7期 页码 77-83
我国生产的原油大多为含蜡原油,加热输送是含蜡原油的主要输送方式。埋地热含蜡原油管道的运行中涉及若干复杂的非稳态传热问题。从管内原油传热(内部传热)和管道与外部环境的传热(外部传热)两方面,分析和总结了含蜡原油管道非稳态传热问题的研究现状,介绍了管道在土壤中传热的影响因素,比较了其各种解析和数值解法,阐述了管道停输状态下管内含蜡原油相变传热的规律及研究方法,讨论了非稳定流动状态下管内油流的水力—热力耦合问题及求解方法,指出了埋地热含蜡原油管道的非稳态传热方面需进一步研究的问题。
王玉恒,刘峰,宋凤梅
《中国工程科学》 2008年 第10卷 第11期 页码 47-51
对光滑粒子流体动力学方法(smoothed particle hydrodynamics,SPH)的基本技术原理及发展现状进行了综述,利用SPH方法对两个典型二维非线性动力学算例进行了数值模拟。同时,利用国外学者提出的方法初步探索了有关热传导问题的SPH模型。
Transient analysis of thermoelastic contact problem of disk brakes
Ali BELHOCINE, Mostefa BOUCHETARA
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 150-159 doi: 10.1007/s11465-013-0266-6
The main purpose of this study is to analyze the thermomechanical behavior of the dry contact between the brake disk and pads during the braking phase. The simulation strategy is based on computer code ANSYS11. The modeling of transient temperature in the disk is actually used to identify the factor of geometric design of the disk to install the ventilation system in vehicles. The thermal-structural analysis is then used with coupling to determine the deformation established and the Von Mises stresses in the disk, the contact pressure distribution in pads. The results are satisfactory compared to those found in the literature.
关键词: brake disks heat flux heat-transfer coefficient Von Mises stress contact pressure
用于个人降温和保暖的具有定制热传导和热辐射特性的双功能非对称织物 Article
Yucan Peng, Hiang Kwee Lee, David S. Wu, Yi Cui
《工程(英文)》 2022年 第10卷 第3期 页码 167-173 doi: 10.1016/j.eng.2021.04.016
为了让人体感到热舒适,同时节约能源,个人热管理正逐渐成为一种颇有前景的策略。通过更好地控制人体散热,个人热管理可以实现有效的个人降温和保暖。本文提出了一种简单的表面改性方法,在商用织物的基础上定制热传导和热辐射特性,以便更好地管理从人体到环境的整个传热路径。本文对一种同时具有降温和保暖效果的双功能非对称织物(BAF)进行论证。凭借粗糙度不对称和表面改性等优点,BAF在降温模式下通过增强热传导和热辐射表现出显著的降温效果;在保暖模式下,两条路径的散热都减少,从而实现个人保暖。结果表明,在BAF的降温和保暖模式下测得的皮肤温差可达4.6 ℃,表明一件BAF衣服可以扩大人体的热舒适区。希望本研究可为用于个人热管理的织物的设计提供新的视角,并为现有的用于个人降温和保暖的织物的简单改性提供新的解决方案。
Nazim Abdul NARIMAN
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 609-628 doi: 10.1007/s11709-018-0452-z
关键词: fire scenario transient heat transfer TFSI model coupled thermal-stress XFEM
Transient performance comparison of grid-forming converters with different FRT control strategies
《能源前沿(英文)》 2023年 第17卷 第2期 页码 239-250 doi: 10.1007/s11708-022-0856-2
关键词: grid-forming converters (GFMs) fault ride through (FRT) transient stability transient inrush current transient modeling
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 593-606 doi: 10.1007/s11465-021-0636-4
关键词: topology optimization solid isotropic material with penalization transient response aggregation function second-order Arnoldi reduction
Development of new transient liquid phase system Au-Sn-Au for microsystem technology
Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE
《机械工程前沿(英文)》 2010年 第5卷 第4期 页码 370-375 doi: 10.1007/s11465-010-0107-9
关键词: transient liquid phase microtechnology soldering diffusion physical vapor deposition (PVD)
Zhouyu ZHANG, Hao CHEN, Zhenglin HU, Shoubin ZHOU, Lan ZHANG, Jiayan LUO
《能源前沿(英文)》 2022年 第16卷 第5期 页码 706-733 doi: 10.1007/s11708-022-0833-9
关键词: composite solid electrolytes active filler/framework ion conduction path interphase compatibility multilayer design
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
State identification of home appliance with transient features in residential buildings
《能源前沿(英文)》 2022年 第16卷 第1期 页码 130-143 doi: 10.1007/s11708-022-0822-z
关键词: nonintrusive load monitoring (NILM) load disaggregation online load disaggregation Kalman filtering factorial hidden Markov model (FHMM) Labeled hIgh-Frequency daTaset for Electricity Disaggregation (LIFTED)
标题 作者 时间 类型 操作
Sensitivity analysis and numerical experiments on transient test of compact heat exchanger surfaces
REN Hesheng, LAI Lingjun, CUI Yongzheng
期刊论文
An isogeometric numerical study of partially and fully implicit schemes for transient adjoint shape sensitivity
Zhen-Pei WANG, Zhifeng XIE, Leong Hien POH
期刊论文
Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers
Dongqiang LEI, Yucong REN, Zhifeng WANG
期刊论文
Predictor-corrector algorithm for solving quasi-separated-flow and transient distributed-parameter modelfor heat exchangers
Ping ZHANG, Guoliang DING
期刊论文
Transient analysis of thermoelastic contact problem of disk brakes
Ali BELHOCINE, Mostefa BOUCHETARA
期刊论文
Thermal fluid-structure interaction and coupled thermal-stress analysis in a cable stayed bridge exposed to fire
Nazim Abdul NARIMAN
期刊论文
Transient performance comparison of grid-forming converters with different FRT control strategies
期刊论文
Topology optimization of transient problem with maximum dynamic response constraint using SOAR scheme
期刊论文
Development of new transient liquid phase system Au-Sn-Au for microsystem technology
Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE
期刊论文
Ion conduction path in composite solid electrolytes for lithium metal batteries: from polymer rich to
Zhouyu ZHANG, Hao CHEN, Zhenglin HU, Shoubin ZHOU, Lan ZHANG, Jiayan LUO
期刊论文
An invariant descriptor for conjugate forced convection-conduction cooling of 3D protruding heaters in
Thiago ANTONINI ALVES,Paulo H. D. SANTOS,Murilo A. BARBUR
期刊论文