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Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation

Zheng WANG, Zai-Sha MAO, Chao YANG, Qinghua ZHANG, Jingcai CHENG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 272-281 doi: 10.1007/s11705-009-0023-x

Abstract: The effect of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tankThe simulation results show that the value of shape factor used in the model affected greatly the meanIt is important to investigate the relationship of the shape factor with the precipitator type and other

Keywords: stirred tank     numerical simulation     precipitation     shape factor     crystal kinetics    

Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 429-434 doi: 10.1007/s11465-011-0247-6

Abstract: In this paper first mathematical equations for elliptical lobe shape rotors profile and curvature ofthem have been derived and then Specific flow and wear rate proportional factor (WRPF) have been formulatedTo reach the minimum wear in rotors teeth, the ellipse shape factor is changed for each value of numberof outer rotor teeth in a feasible range and wear rate proportional factor has been resulted.

Keywords: gerotor pump     elliptical lobe shape pump     wear rate proportional factor (WRPF)     specific flow    

Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using imaging technique

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 643-651 doi: 10.1007/s11709-021-0709-9

Abstract: This study presents the results of the 3D microstructure, thermal conductivity, and heat flow in cement-based foams and examines their changes with a range of densities. Images were captured using X-ray micro computed tomography (micro-CT) imaging technique on cement-based foam samples prepared with densities of 400, 600, and 800 kg/m3. These images were later simulated and quantified using 3D data visualization and analysis software. Based on the analysis, the pore volume of 11000 µm3 was determined across the three densities, leading to optimal results. However, distinct pore diameters of 15 µm for 800 kg/m3, and 20 µm for 600 and 400 kg/m3 were found to be optimum. Most of the pores were spherical, with only 10% appearing elongated or fractured. In addition, a difference of 15% was observed between the 2D and 3D porosity results. Moreover, a difference of 5% was noticed between the experimentally measured thermal conductivity and the numerically predicted value and this variation was constant across the three cast densities. The 3D model showed that heat flows through the cement paste solids and with an increase in porosity this flow reduces.

Keywords: 3D pore volume distribution     X-ray tomography     3D shape factor     heat flow    

An extended thermo-mechanically coupled algorithm for simulation of superelasticity and shape memoryeffect in shape memory alloys

S. HASHEMI,H. AHMADIAN,S. MOHAMMADI

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 466-477 doi: 10.1007/s11709-015-0300-3

Abstract: Thermo-mechanical coupling in shape memory alloys is a very complicated phenomenon.lead to temperature-dependent variation of its mechanical behavior in the forms of superelasticity and shapealgorithm is proposed based on the original model of Lagoudas to efficiently model both superelasticity and shape

Keywords: shape memory alloy     thermo-mechanical coupling     superplasticity     shape memory effect    

A novel shape memory alloy actuated soft gripper imitated hand behavior

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0700-8

Abstract: The limited length shrinkage of shape memory alloy (SMA) wire seriously limits the motion range of SMA-basedwithout silicone gel was designed based on pre bent SMA wire, and the finger was back to its original shape

Keywords: shape memory alloy (SMA)     pre bent     wire     gripper     grasping mode     lightweight    

Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5,   Pages 108-171 doi: 10.1007/s11783-021-1396-4

Abstract: It was found that the catalytic activities were dependent on the size and shape of the MnFe2shape effects of MnFe2O4 nanoparticles demonstrated in this work not

Keywords: Dye degradation     MnFe2O4 nanoparticles     Size and shape-control    

Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 348-357 doi: 10.1007/s11709-012-0176-4

Abstract: present study is to analytically investigate temperature effects of an axial-type seismic damper made of shape

Keywords: damage control design     shape memory alloy     temperature effect    

A fully solid-state cold thermal energy storage device for car seats using shape-memory alloys

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 504-515 doi: 10.1007/s11708-022-0855-3

Abstract: As a solid-solid phase change material, shape-memory alloys (SMAs) have the inherent advantages of leakageConsidering these characteristics, the design of the shape-memory alloy based the cold thermal energystorage system for precooling car seat application is introduced in this paper based on the proposed shape-memoryThe influence of initial temperature, elastocaloric materials, and the shape-memory alloy geometry schemeenergy storage materials, hopefully the proposed concept can promote the development of more promising shape-memory

Keywords: shape-memory alloy (SMA)     elastocaloric effect (eCE)     cooled seat     cold thermal energy storage    

Definition and Verification of Shape Meter Method

Zhang Jinzhi,Duan Chunhua,Zhu Jianqin

Strategic Study of CAE 2001, Volume 3, Issue 12,   Pages 47-51

Abstract:

Shape survey and control mathematics model,analytical theory for shape stiffness and the shape andgauge coordination control law are called shape meter methcd.paper, two experimental methods had been adopted to verify the correctness and practicality of the shapemeter method : one is to roll aluminum plate and calculate the shape stiffness of mill and rolled piece, then survey aluminum plate crown to verify shape stiffness e-quation;the other is to calculate survey

Keywords: shape meter methcxl     shape stiffness equation     survey and control mathematics model     follow-up calculation    

Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 165-172 doi: 10.1007/s11709-009-0021-6

Abstract: Based on the spatial model, a reliable and accurate calculation method on the shape finding of self-anchoredOn the principle that the shape of the main cables between hangers is catenary, the iteration methodThe reasonable position of the saddle was determined according to the shape and the theoretical jointThe results show that the shape-finding calculation method is effective and reliable.

Keywords: bridge engineering     self-anchored suspension bridges     special cables     shape-finding     calculation method    

Shape selective catalysis in methylation of toluene: Development, challenges and perspectives

Jian Zhou, Zhicheng Liu, Yangdong Wang, Dejin Kong, Zaiku Xie

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 103-112 doi: 10.1007/s11705-017-1671-x

Abstract: and afterwards covering external acid sites by surface modification to get short “micro-tunnels” with shape

Keywords: shape selective catalysis     methylation of toluene    

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 48-52 doi: 10.1007/s11465-018-0493-y

Abstract:

Three types of near-net shape casting aluminum parts were investigated by computed tomography to determine, and this absence of defects indicates that semi-solid casting could produce high-quality near-net shapedemonstrated that computed tomography is an efficient method to determine casting defects in near-net shape

Keywords: near-net shape casting     aluminum parts     casting defects     low pressure die casting     die casting     semi-solid    

Quantification of coarse aggregate shape in concrete

Xianglin GU,Yvonne TRAN,Li HONG

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 3,   Pages 308-321 doi: 10.1007/s11709-014-0266-6

Abstract: used to quantify the aggregate form and angularity for the purpose to study the influence of aggregate shape

Keywords: coarse aggregate     form     angularity     digital image analysis     statistical distribution     splitting tensile strength    

Plastic materials and water sources actively select and shape wastewater plastispheres over time

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1580-1

Abstract:

● Wastewater MPs exhibited resistomes and therefore health threats.

Keywords: Microplastics     Whole-genome metagenomic sequencing     Plastisphere     Plastic degradation     MHETase    

Improvement of impact resistance of plain-woven composite by embedding superelastic shape memory alloy

Xiaojun GU, Xiuzhong SU, Jun WANG, Yingjie XU, Jihong ZHU, Weihong ZHANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 547-557 doi: 10.1007/s11465-020-0595-1

Abstract: overcome this limitation, this study presents a new plain-woven CFRP composite embedded with superelastic shape

Keywords: carbon fiber reinforced polymer composite     shape memory alloy wire     impact resistance     drop-weight test    

Title Author Date Type Operation

Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation

Zheng WANG, Zai-Sha MAO, Chao YANG, Qinghua ZHANG, Jingcai CHENG

Journal Article

Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Journal Article

Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using imaging technique

Journal Article

An extended thermo-mechanically coupled algorithm for simulation of superelasticity and shape memoryeffect in shape memory alloys

S. HASHEMI,H. AHMADIAN,S. MOHAMMADI

Journal Article

A novel shape memory alloy actuated soft gripper imitated hand behavior

Journal Article

Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Journal Article

Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Journal Article

A fully solid-state cold thermal energy storage device for car seats using shape-memory alloys

Journal Article

Definition and Verification of Shape Meter Method

Zhang Jinzhi,Duan Chunhua,Zhu Jianqin

Journal Article

Calculation method on shape finding of self-anchored suspension bridge with spatial cables

Yan HAN, Zhengqing CHEN, Shidong LUO, Shankui YANG

Journal Article

Shape selective catalysis in methylation of toluene: Development, challenges and perspectives

Jian Zhou, Zhicheng Liu, Yangdong Wang, Dejin Kong, Zaiku Xie

Journal Article

Determining casting defects in near-net shape casting aluminum parts by computed tomography

Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER

Journal Article

Quantification of coarse aggregate shape in concrete

Xianglin GU,Yvonne TRAN,Li HONG

Journal Article

Plastic materials and water sources actively select and shape wastewater plastispheres over time

Journal Article

Improvement of impact resistance of plain-woven composite by embedding superelastic shape memory alloy

Xiaojun GU, Xiuzhong SU, Jun WANG, Yingjie XU, Jihong ZHU, Weihong ZHANG

Journal Article