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Dynamical analysis of droplet impact spreading on solid substrate

Zhaomiao LIU, Huamin LIU, Xin LIU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3, Pages 308-315 doi: 10.1007/s11465-010-0020-2

Abstract: This paper investigates the impact spreading of a droplet on a solid substrate using numerical simulationThe pressure, velocity, and spreading factor during the droplet spreading are reported.on the substrate are quite different and air entrainment may be found as the impact speeds in a certainThe impact speed impacts on the spreading factors in high speed droplet spreading.The spreading factor obviously increases with increasing impact speed; however, splashing will appear

Keywords： droplet impact spreading numerical simulation

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Analysis of molten metal spreading and solidification behaviors utilizing moving particle full-implicit

Frontiers in Energy 2021, Volume 15, Issue 4, Pages 959-973 doi: 10.1007/s11708-021-0753-0

Abstract: In particular, the molten metal spreading behavior is one of the vital phenomena in nuclear severe accidentsIn this study, the fundamental molten metal spreading experiments were performed with different outletdiameters and sample amounts to investigate the effect of the outlet for spreading-solidification behaviorIn addition, the difference in the spreading and solidification behavior due to the outlet diametersThe simulation results reveal the detailed solidification procedure during the molten metal spreading

Keywords： molten metal spreading solidification particle method severe accident fuel debris decommissioning

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Identifying spreading influence nodes for social networks

Frontiers of Engineering Management Pages 520-549 doi: 10.1007/s42524-022-0190-8

Abstract: The identification of spreading influence nodes in social networks, which studies how to detect importantThe identification algorithms of spreading influence nodes can be used to evaluate the spreading influenceThis review summarizes the recent progress about the identification algorithms of spreading influencediffusion models and performance evaluation metrics, and outline future challenges of the identification of spreading

Keywords： complex network network science spreading influence machine learning

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Less attention paid to waterborne SARS-CoV-2 spreading in Beijing urban communities

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1398-2

Abstract:

• A survey on individual’s perception of SARS-CoV-2 transmission was conducted.

Keywords： Environmental dissemination Risk communication Individual perception

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Can we migrate COVID-19 spreading risk?

Qingyan Chen

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1328-8

Abstract: Abstract It is well recognized that Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) virus could be spread through touch and large droplets. However, we may have under-estimated the disease transmission by small droplets or aerosols that contain SARS-CoV-2 virus. Social distancing in public transport vehicles, such as airplanes, is not feasible. It is also not possible to wear masks in restaurant. This paper recommended wearing masks in airplanes and use partition screens in the middle of a table in a restaurant to reduce the infection caused by SARS-CoV-2 virus. Advanced ventilation systems, such as personalized ventilation and displacement ventilation, are strongly recommended for transport vehicles and buildings.

Keywords： Airborne transmission Ventilation Masks Partitions

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Heat-spreading analysis of a heat sink base embedded with a heat pipe

B. V. BORGMEYER, H. B. MA,

Frontiers in Energy 2010, Volume 4, Issue 2, Pages 143-148 doi: 10.1007/s11708-010-0013-1

Abstract: A simplified model predicting the heat transfer performance of a heat sink base with a high thermal conductivity was developed. Numerical analysis was performed using the commercial software FLUENT. The investigation indicates that for heat sink bases with a high effective thermal conductivity, such as the base embedded with a typical heat pipe, the entire heat sink can be modeled as a flat plate with a uniform temperature and an effective convection heat transfer coefficient. This simplified model can be used to determine the heat transfer performance of a heat sink embedded with a typical heat pipe or vapor chamber.

Keywords： heat pipe heat sink microprocessor heat removal

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High efficiency spreading spectrum modulation based on double orthogonal complex sequences

Shi Xiaohong

Strategic Study of CAE 2012, Volume 14, Issue 3, Pages 108-112

Abstract:

This paper presents a kind of high efficiency spreading spectrum modulation

Keywords： modulation and demodulation high efficiency spreading spectrum modulation forward phase correction

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Game theoretic analysis of environmental impact assessment system in China

CHENG Hongguang, PU Xiao, GONG Li, QI Ye

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 448-453 doi: 10.1007/s11783-007-0071-8

Abstract: Environmental impact assessment (EIA) system has been established in China since 1973.

Keywords： public impact assessment Environmental impact general

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The clinical impact of tricuspid regurgitation in patients with a biatrial orthotopic heart transplant

Frontiers of Medicine 2023, Volume 17, Issue 3, Pages 527-533 doi: 10.1007/s11684-022-0967-5

Abstract: In this study, we aim to elucidate the clinical impact and long-term course of tricuspid regurgitation

Keywords： orthotopic heart transplant tricuspid regurgitation clinical impact biatrial heart transplantation

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Comparison of droplet distributions from fluidic and impact sprinklers

Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 1, Pages 53-59 doi: 10.15302/J-FASE-2015049

Abstract: prototype sprinklers, outside signal sprinkler (OS) and fluidic sprinkler (FS), were compared with impact

Keywords： outside signal sprinkler fluidic sprinkler impact sprinkler sprinkler irrigation droplet size droplet

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Mechanical properties and impact resistance of concrete composites with hybrid steel fibers

Fatih ÖZALP; Halit Dilşad YILMAZ; Burcu AKCAY

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5, Pages 615-623 doi: 10.1007/s11709-022-0828-y

Abstract: In addition to the fracture energy and impact strength, two important indicators of ballistic performance

Keywords： projectile impact depth of penetration fracture energy crater diameter UHPFRC

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Hazard potential of zones of weakness in gravity dams under impact loading conditions

Herbert LINSBAUER

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 90-97 doi: 10.1007/s11709-010-0008-3

Abstract: to “dynamic loading” in the form of seismic action on the dam-reservoir-system and alternatively by “impact

Keywords： dam-reservoir earthquake impact cracking fracture mechanics

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Buffer capacity of granular matter to impact of spherical projectile based on discrete element method

Ying YAN, Pengfei LI, Shunying JI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 50-54 doi: 10.1007/s11709-013-0186-x

Abstract: Granular matter possesses impact-absorbing property due to its energy dissipation character.To investigate the impact-absorbing capacity of granular matter, the discrete element method (DEM) isadopted to simulate the impact of a spherical projectile on to a granular bed.The penetration depth of the projectile and the first impact peak are investigated with different bedthicknesses and impact velocities.

Keywords： granular matter impact peak buffer capacity discrete element method critical thickness

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Water film coated composite liquid metal marble and its fluidic impact dynamics phenomenon

Yujie DING,Jing LIU

Frontiers in Energy 2016, Volume 10, Issue 1, Pages 29-36 doi: 10.1007/s11708-015-0388-0

Abstract: A composite liquid metal marble made of metal droplet coated with water film was proposed and its impact

Keywords： liquid metal marble metallic droplet composite fluid impact dynamics multiphase fluid mechanics

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Dynamic characteristics of a shrouded blade with impact and friction

Xumin GUO, Jin ZENG, Hui MA, Chenguang ZHAO, Lin QU, Bangchun WEN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2, Pages 209-226 doi: 10.1007/s11465-019-0566-6

Abstract: A simplified computational model of a twisted shrouded blade with impact and friction is established.Impact force is simulated using a linear spring model, and friction force is generated by a tangentialResults show that resonant peaks become inconspicuous and impact plays a dominant role when initial gaps

Keywords： twisted shrouded blade dynamic analysis impact friction separate–stick–slip motion