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Development of an axial-type fan with an optimization method
Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 414-422 doi: 10.1007/s11708-009-0038-5
关键词: axial-type fan gradient method free-vortex method design variable total pressure static pressure operating flowrate
Investigation of vortical flows over oscillating body using fast Lagrangian vortex method
Baoshan ZHU ,
《能源前沿(英文)》 2009年 第3卷 第3期 页码 297-306 doi: 10.1007/s11708-009-0010-4
关键词: unsteady vortical flows fast vortex method vortex shedding rotational oscillation thin cambered blade
Dynamic analysis of free-surface thin film flows driven by gravity over undulated substrate
Zhaomiao LIU, Xin LIU, Guobin WANG, Hong LIAO,
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 219-225 doi: 10.1007/s11465-010-0010-4
关键词: waviness triangle height film thickness streamlines separation vortex
Solvent-free mechanochemical mild oxidation method to enhance adsorption properties of chitosan
《环境科学与工程前沿(英文)》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1416-4
• Solvent-free chitosan oxidation is obtained by rapid mechanochemical reaction.
关键词: Chitosan High energy ball milling Mechanochemistry Oxidation
An overview of vortex-induced vibration (VIV) of bridge decks
Teng WU, Ahsan KAREEM
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 335-347 doi: 10.1007/s11709-012-0179-1
陈矛章,彭波
《中国工程科学》 2000年 第2卷 第2期 页码 15-23
本课题组发展了一种扰动涡方法,用以研究叶轮机内动、静叶相互作用[1,2]。其优点是物理图画清楚,计算收敛快。它采用了一个重要假设:扰动胀量为零,从而大大简化 了计算过程。文章的目的是研究此假设的影响,并取消此假设,使扰动涡方法建立在完全严格的数学基础上。由于取消了“扰动胀量为零的假设,需要耦合求解扰动质量方程、扰动涡量输运方程和扰动能量输运方程。这是文章与文献[1,2]的主要区别。
文献[1,2]对NASA67压气机第一级内由于动、静叶间的相互作用引起的非定常流动过程作了数值模拟,并与试验结果作了对比。文章也作了同样的算例,以研究扰动胀量为零的影响。数值模拟结果表明,在引入了扰动胀量后,用扰动涡方法模拟动静干涉仍保持较好的收敛性和收敛速度,且与试验的符合程度更好。文章强调指出,即使对于非定常可压流,为满足无渗透边界条件所需的运动分量也是用椭圆类的拉普拉斯方程描述,而不是用双曲类的方程描述。“扰动胀童为零”不能等同于扰动运动为不可压。
Nazim Abdul NARIMAN
《结构与土木工程前沿(英文)》 2017年 第11卷 第4期 页码 480-501 doi: 10.1007/s11709-017-0435-5
关键词: vortex induced vibration reynolds number kinetic energy vorticity latin hypercube sampling
Design and modeling of a free-piston engine generator
《能源前沿(英文)》 页码 811-821 doi: 10.1007/s11708-022-0848-2
关键词: free-piston engine generator linear permanent magnet synchronous machine system design numerical model finite element method
Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method
Hanjie ZHANG,Junzhao WU,Dongdong WANG
《结构与土木工程前沿(英文)》 2015年 第9卷 第4期 页码 405-419 doi: 10.1007/s11709-015-0310-1
关键词: meshfree method isogeometric analysis quasi-convex isogeometric-meshfree method free vibration cracked thin plate
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 191-202 doi: 10.1007/s11465-014-0293-y
In present study, free vibration of cracked beams resting on two-parameter elastic foundation with elastically restrained ends is considered. Euler-Bernoulli beam hypothesis has been applied and translational and rotational elastic springs in each end considered as support. The crack is modeled as a mass-less rotational spring which divides beam into two segments. After governing the equations of motion, the differential transform method (DTM) has been served to determine dimensionless frequencies and normalized mode shapes. DTM is a semi-analytical approach based on Taylor expansion series that converts differential equations to recursive algebraic equations. The DTM results for the natural frequencies in special cases are in very good agreement with results reported by well-known references. Also, the DTM procedure yields rapid convergence beside high accuracy without any frequency missing. Comprehensive studies to analyze the effects of crack location, crack severity, parameters of elastic foundation and boundary conditions on dimensionless frequencies as well as effects of elastic boundary conditions on cracked beams mode shapes are carried out and some problems handled for first time in this paper. Since this paper deals with general problem, the derived formulation has capability for analyzing free vibration of cracked beam with every boundary condition.
关键词: free vibration cracked beam elastic foundation restrained ends differential transform method
Zhaoyang LIU, Xianqiang MAO, Wei TANG, Tao HU, Peng SONG
《环境科学与工程前沿(英文)》 2012年 第6卷 第6期 页码 849-859 doi: 10.1007/s11783-012-0432-9
关键词: Free Trade Agreement Strategic Environmental Assessment Chain Reaction Assessment Method Computable General Equilibrium model Global Trade Analysis Project
TAO Wenquan, WU Junmei
《能源前沿(英文)》 2008年 第2卷 第1期 页码 71-78 doi: 10.1007/s11708-008-0001-x
关键词: inherent mechanism integral surface rectanglar longitudinal
Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,
《能源前沿(英文)》 2010年 第4卷 第3期 页码 333-345 doi: 10.1007/s11708-009-0061-6
关键词: heat transfer enhancement vortex generator finned flat tube bank heat exchanger
Xiaoliang MENG, Ledong ZHU, Zhenshan GUO
《结构与土木工程前沿(英文)》 2011年 第5卷 第4期 页码 510-517 doi: 10.1007/s11709-011-0129-3
关键词: separated parallel decks vortex-induced vibration aerodynamic interference aerodynamic mitigation measure semi-closed box deck full-closed box deck
Investigation of flow dynamics and decrease of vortex noise inside volute of centrifugal fans
LI Chunxi, WANG Songling
《能源前沿(英文)》 2008年 第2卷 第2期 页码 235-240 doi: 10.1007/s11708-008-0040-3
关键词: cylinder-shaped evolution computational effective large-scale
标题 作者 时间 类型 操作
Development of an axial-type fan with an optimization method
Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,
期刊论文
Investigation of vortical flows over oscillating body using fast Lagrangian vortex method
Baoshan ZHU ,
期刊论文
Dynamic analysis of free-surface thin film flows driven by gravity over undulated substrate
Zhaomiao LIU, Xin LIU, Guobin WANG, Hong LIAO,
期刊论文
Solvent-free mechanochemical mild oxidation method to enhance adsorption properties of chitosan
期刊论文
Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental
Nazim Abdul NARIMAN
期刊论文
Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method
Hanjie ZHANG,Junzhao WU,Dongdong WANG
期刊论文
Semi-analytical approach for free vibration analysis of cracked beams resting on two-parameter elastic
null
期刊论文
An assessment of China-Japan-Korea Free Trade Agreement’s economic and environmental impacts on China
Zhaoyang LIU, Xianqiang MAO, Wei TANG, Tao HU, Peng SONG
期刊论文
Numerical investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based
TAO Wenquan, WU Junmei
期刊论文
Transversal tube pitch effects on local heat transfer characteristics of the flat tube bank fin mounted vortex
Liangbi WANG, Zhimin LIN, Kangjie SUN, Yuanxin DONG, Song LIU, Yongheng ZHANG,
期刊论文
Aerodynamic interference effects and mitigation measures on vortex-induced vibrations of two adjacent
Xiaoliang MENG, Ledong ZHU, Zhenshan GUO
期刊论文