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Laminar-to-Turbulence Transition Revealed Through a Reynolds Number Equivalence Article

Xiao Dong Chen

Engineering 2019, Volume 5, Issue 3,   Pages 576-579 doi: 10.1016/j.eng.2018.09.013

Abstract: In this work, a local Reynolds number equivalence γ (ratio of localIt is found that the characteristic of how the local derivative of γ against the local

Keywords： Local Reynolds number equivalence     Flow transition from laminar to turbulent mode     Universal law of the    

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Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 546-552 doi: 10.1007/s11708-010-0116-8

Abstract: The experiments were conducted over a wide Reynolds number range of 40000 to 500000.contribution of secondary flow in the helical coil to heat transfer was gradually suppressed with increasing Reynoldsnumber.of the helical tube were close to those of the straight tube under the same flow conditions when the Reynoldsnumber is large enough.

Keywords： convective heat transfer     helical coils     high Reynolds number     supercritical pressure     variable property    

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A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 439-449 doi: 10.1007/s11708-019-0612-4

Abstract: flow rate and the initial thermal state of the reservoir were taken and the characteristic Forchheimer numberIf the calculated Forchheimer number is larger than 0.2, the fluid flow in EGS heat reservoirs experiences

Keywords： enhanced geothermal system     non-Darcy flow     heat extraction     Reynolds number     Forchheimer number    

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Experiment and surge analysis of centrifugal two-stage turbocharging system

HE Yituan, MA Chaochen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 365-368 doi: 10.1007/s11465-008-0073-7

Abstract: compressor can be converted into corrected parameters under a standard condition according to the Mach numbersimilarity criterion, because the air flow in a HP stage compressor has entered the Reynolds number

Keywords： auto-modeling     compressor     Reynolds number     characteristic     standard condition    

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Experimental study on heat transfer characteristics of supercritical carbon dioxide in horizontal tube

LV Jing, FU Meng, QIN Na, DONG Bin

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 339-343 doi: 10.1007/s11708-008-0045-y

Abstract: The variations of Reynolds number and Prandtl number were obtained in counter flow and vertical cross

Keywords： conventional     experimental condition     vertical     Reynolds number     transfer    

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Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental bridge decks

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 480-501 doi: 10.1007/s11709-017-0435-5

Abstract: In this paper, semi 3D models for segmental Bridge decks are created in ABAQUS CFD program with the support of MATLAB codes to simulate and analyze vortex shedding generated due to wind excitation through considering the stationary position of the deck. Three parameters (wind speed, deck streamlined length and dynamic viscosity of the air) are dedicated to study their effects on the kinetic energy of the system in addition to the shapes and patterns of the vortices. Two benchmarks from the literature Von Karman and Dyrbye and Hansen are considered to validate the vortex shedding aspects for the CFD models. Good agreement between the results of the benchmarks and the semi 3D models has been detected. Latin hypercube experimental method is dedicated to generate the surrogate models for the kinetic energy of the system and the lift forces. Variance based sensitivity analysis is utilized to calculate the main sensitivity indices and the interaction orders for all the three parameters. The kinetic energy approach performed very well in revealing the rational effects and the roles of each parameter in the generation of vortex shedding and predicting vortex induced vibration of the deck.

Keywords： vortex induced vibration     reynolds number     kinetic energy     vorticity     latin hypercube sampling    

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The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1015-1024 doi: 10.1007/s11783-014-0670-0

Abstract: Thus, this article calculates equivalence factors on the national and provincial levels in China basedbuilt-up land has an equivalence factor of 1.71, forest and fossil energy land has a factor of 1.41,pasture has a factor of 0.44 and water/fishery 0.35; Finally, the equivalence factor of 6 land areaThe NPP of each ecosystem type varies along with the equivalence factor in different provinces.However, the ranking of the equivalence factors in different provinces remain the same, with that of

Keywords： ecological footprint     equivalence factor     net primary production     biological capacity     land types    

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Study on Quenching of Engine Cylinder Block by YAG Laser

Zhang Guoshun,Zhang Taishi,Yang Zhaoxia,Zhang Jian,Li Hefen,Zhao Aiguo

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 68-70

Abstract: In computer controlling system, the concept of horizontal diamond number and vertical diamond number

Keywords： YAG laser quenching     engine cylinder     vertical diamond number     horizontal diamond number     local densified    

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Aerodynamic problems of cable-stayed bridges spanning over one thousand meters

Chen Airong,Ma Rujin,Wang Dalei

Strategic Study of CAE 2009, Volume 11, Issue 3,   Pages 31-37

Abstract: In the end, some discussions on vortex excited vibration and Rehnilds number effect are intoduced.

Keywords： Sutong cable-stayed bridge     dynamic properties     suitsble system     Reynolds number effect     flutter derivatives    

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Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 506-514 doi: 10.1007/s11705-010-0508-7

Abstract: The Speziale, Sarkar and Gatski Reynolds Stress Model (SSG RSM) is utilized to simulate the fluid dynamicsFour levels of grid resolutions are chosen to determine an optimised number of grids for further simulationsThe comparison shows that the global fluid dynamics throughout the stirred tank and the local characteristicsThe power number predicted is quite close to the designed value, which demonstrates that this model canaccurately calculate the power number in the stirred tank.

Keywords： stirred tank     fluid dynamics     numerical simulation     SSG Reynolds Stress Model     MRF    

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Flagellar/Ciliary Intrinsic Driven Mechanism Inspired All-in-One Tubular Robotic Actuator Article

Jiaqi Miao, Tieshan Zhang, Gen Li, Dong Guo, Siqi Sun, Rong Tan, Jiahai Shi, Yajing Shen

Engineering 2023, Volume 23, Issue 4,   Pages 170-180 doi: 10.1016/j.eng.2022.09.014

Abstract: also extrapolate a variety of symmetry-breaking ciliary beating modes for effective propulsion at low Reynoldsnumber.

Keywords： Biomimetic systems     Soft actuators     9 + 2 structure     Artificial cilia     Low Reynolds number    

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High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 406-416 doi: 10.1007/s11709-018-0475-5

Abstract: We approximate the fracture surface energy functional based on phase-field method with smooth local maximum

Keywords： second-order maximum entropy     local maximum entropy     second- and fourth-order phase-field models     B-spline    

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Local uncorrelated local discriminant embedding for face recognition

Xiao-hu MA,Meng YANG,Zhao ZHANG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3,   Pages 212-223 doi: 10.1631/FITEE.1500255

Abstract: In this paper, we introduce a novel feature extraction method called local uncorrelated local discriminantThe proposed approach can be seen as an extension of a local discriminant embedding (LDE) framework inFirst, a new local statistical uncorrelated criterion is proposed, which effectively captures the local

Keywords： Feature extraction     Local discriminant embedding     Local uncorrelated criterion     Face recognition    

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Making central-local relations work: Comparing America and China environmental governance systems

Dan GUTTMAN, SONG Yaqin

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 418-433 doi: 10.1007/s11783-007-0068-3

Abstract: The challenge of making central requirements work at local levels is a common problem for environmentalCountries can learn from one another s approaches, but must understand the local context in w
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EXPLORING THE RELATIVE ADVANTAGES OF LOCAL INNOVATION IN AGROFORESTRY

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1,   Pages 61-72 doi: 10.15302/J-FASE-2022476

Abstract:

● Promotion of local sustainable innovation developed by forest farmers

Keywords： agroforestry     forest farmers     local innovation     relative advantage     social forestry    

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Title Author Date Type Operation

Laminar-to-Turbulence Transition Revealed Through a Reynolds Number Equivalence

Xiao Dong Chen

Journal Article

Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Journal Article

A numerical study of non-Darcy flow in EGS heat reservoirs during heat extraction

Wenjiong CAO, Wenbo HUANG, Guoling WEI, Yunlong JIN, Fangming JIANG

Journal Article

Experiment and surge analysis of centrifugal two-stage turbocharging system

HE Yituan, MA Chaochen

Journal Article

Experimental study on heat transfer characteristics of supercritical carbon dioxide in horizontal tube

LV Jing, FU Meng, QIN Na, DONG Bin

Journal Article

Kinetic energy based model assessment and sensitivity analysis of vortex induced vibration of segmental bridge decks

Nazim Abdul NARIMAN

Journal Article

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Journal Article

Study on Quenching of Engine Cylinder Block by YAG Laser

Zhang Guoshun,Zhang Taishi,Yang Zhaoxia,Zhang Jian,Li Hefen,Zhao Aiguo

Journal Article

Aerodynamic problems of cable-stayed bridges spanning over one thousand meters

Chen Airong,Ma Rujin,Wang Dalei

Journal Article

Numerical simulation of fluid dynamics in the stirred tank by the SSG Reynolds Stress Model

Nana QI, Hui WANG, Kai ZHANG, Hu ZHANG

Journal Article

Flagellar/Ciliary Intrinsic Driven Mechanism Inspired All-in-One Tubular Robotic Actuator

Jiaqi Miao, Tieshan Zhang, Gen Li, Dong Guo, Siqi Sun, Rong Tan, Jiahai Shi, Yajing Shen

Journal Article

High-order phase-field model with the local and second-order max-entropy approximants

Fatemeh AMIRI

Journal Article

Local uncorrelated local discriminant embedding for face recognition

Xiao-hu MA,Meng YANG,Zhao ZHANG

Journal Article

Making central-local relations work: Comparing America and China environmental governance systems

Dan GUTTMAN, SONG Yaqin

Journal Article

EXPLORING THE RELATIVE ADVANTAGES OF LOCAL INNOVATION IN AGROFORESTRY

Journal Article