Interface Research Articles

PHYSICAL SIMULATION OF Ar BUBBLE BEHAVIOR IN THE SOLID/LIQUID INTERFACE OF CONTINUOUS CASTING BILLET

Ar gas was injected to the nozzle during continuous casting to prevent from nozzle clogging caused by solid inclusions,however,some gas bubbles were captured by the initial solidified billet shell,and subsequently billet defects were formed in final product.In present work,a physical model applying mold simulator was designed and used to investigate the bubble behavior in the solid/liquid interface.Different mold simulator angels and bubble diameters were considered,three typical behaviors were observed,some bubbles were captured by the solidified shell,several bubbles coalescence in the solid/liquid interface,and other bubbles stayed in the interface for a moment,and then left.The possible mechanism of gas bubble entrapped in solidified shell was analyzed.Besides, industrial billets were studied,many dendrites were found around the hole,it was considered to be a key factor for gas bubble engulfed in the solidification billets in the meniscus area.Further more,the effective technologies,such as electrical brake near the submerged entry nozzle and electrical stirring in the mold narrow face,can improve billet quality and reduce gas bubbles in solidified shell were imposed.

Simulating Whole Supercomputer Applications

Detailed simulations of large scale message-passing interface parallel applications are extremely time consuming and resource intensive. A new methodology that combines signal processing and data m...

Espessadores no beneficiamento de minério de ferro

Esse trabalho visa a comparar estudos de espessamento realizados em escala industrial com ensaios de sedimentação realizados em escala de bancada e propõe a utilização de fatores de correção nos métodos clássicos de dimensionamento de espessadores convencionais. A prática industrial, no âmbito do tratamento de minérios de ferro no Brasil, tem consolidado uma modificação substancial no método clássico de Kynch (com traçado de Talmage & Fitch), a qual consiste em adotar, para o traçado, a concentração mássica de sólidos na proveta após 24 horas, no lugar da concentração nominal do underflow no espessador industrial. Os ensaios indicam que a área unitária assim obtida ainda deve ser afetada com os fatores de correção. Esse fator, multiplicativo, é de 0,64, para espessadores de lamas, e de 1,3, para espessadores de concentrado fino (pellet feed).

A View of The Dailiness of Education from the Interface between Foucault and Habermas

A View of The Dailiness of Education from the Interface between Foucault and Habermas

Systematic Coarse-graining and Multiscale Modeling of Soft Matter

Format This is a copy of the slides presented at the meeting but not formally written up for the volume. Abstract A multiscale theoretical and computational methodology will be presented for describing liquid state, biomolecular, and nanoparticle systems across multiple length- and time-scales. The approach provides an interface between atomistic molecular simulations, mesoscale dynamics, and continuum mechanics. The underlying methodology couples atomistic-level simulations with mesoscale simulations which, in turn, can be bridged to continuum-level modeling where necessary. A new and systematic multiscale coarse-graining strategy for linking the atomistic-scale interactions to the mesoscale will be the primary focus of the presentation. Applications of the overall methodology will be given.

Web-based interface of chaotic swing dynamics in electric power systems

Researchers have showed that bifurcation and chaos theory are a proper and applicable method to study the mechanism of producing cascading failure in a power system by numerous studies. Because of the need for this analysis of cascading failures in power system, we should use such chaotic models and bifurcations models which require strong mathematical background for nonlinear differential equation solution tools and iterative methods. In this context we can say that MATLAB® is a widely used strong computational environment for research and development many large applications continue to be developed and deployed using MATLAB. MATLAB has also enhanced toolboxes and is flexible environment for web platforms. Especially after releasing Deployment Project Toolbox, MATLAB simulations and calculation capabilities have generously been transferred into web environments especially using WebFigureControl component. Web platform is also a great chance for sharing nonlinear dynamics and chaotic modeling studies. These great gaps into literature directed us to transfer our nonlinear dynamics workings in electrical power engineering via web platform. By these thoughts, we have designed a chaotic simulation web portal that simulate and model our nonlinear power system analysis workings. In this study, we focused on a Two machine infinity bus (TMIB) power system model as case study. Key words: Power system, swing dynamics, chaos, WebFigureControl, web simulations.

Expanded Interface, Expanded Interactivity -focused on Sensitive to Pleasure-

Expanded Interface, Expanded Interactivity -focused on Sensitive to Pleasure-

LED 조명을 위한 태양광 시스템 설계

본 논문에서는 LED를 조명의 전원으로 사용하는 소규모 태양광 발전시스템의 설계용 소프트웨어 개발에 대해 제안한다. 태양광 발전시스템의 최적 설계를 위해서, 태양광 모듈과 배터리 용량 산정시, LED 부하의 운전 전력소비량이 고려될 수 있게 하였다. 태양광 발전시스템을 설계하는 엔지니어의 사용 편의성을 높이기 위해, 소프트웨어는 그래픽 사용자 인터페이스와 모니터링 기능을 제공하여, 시스템 설계 후 설치 단계에서 전체 시스템의 운전 상태를 쉽게 파악할 수 있도록 하였다. 【In this paper, a software development for design of the small photovoltaic system which is used to LED lighting is presented. For optimal design of photovoltaic systems, the operating power consumption of the LED load is considered to estimate the capacity of the solar module and battery. In order to give system design engineers a high ease of use, the software tool provides a graphical user interface and monitoring function to check operation of the system prior to installation.】

A study on the view of remediation theorum about smartphone as a culture interface

A study on the view of remediation theorum about smartphone as a culture interface

タッチパネルインタフェースの色彩デザインの印象と操作時間及び正確性との関係

タッチパネルインタフェースの色彩デザインの印象と操作時間及び正確性との関係

A Codicology of the Interface

A Codicology of the Interface

… The uncomfortable interface between medicine, science and the law…

… The uncomfortable interface between medicine, science and the law…

1P1-H05 加速度を再現した遠隔自動車運転システムの構築(VRとインタフェース)

1P1-H05 加速度を再現した遠隔自動車運転システムの構築(VRとインタフェース)

108 二重円筒問を旋回する二液流体における界面振動現象の可視化(GS23-1流体工学)

108 二重円筒問を旋回する二液流体における界面振動現象の可視化(GS23-1流体工学)

Synthesis of a Novel Thiadiazine Derivative and Electrochemical Properties for Pb<sup>2+</sup> Transfer across Water/1,2-Dichloroethane Interface

The transfer of Pb2+ facilitated by interfacial complexation with 5-(4-phenoxyphenyl)-6H-1,3,4-thiadiazin-2-amine(PPTA) at the polarized water/1,2-dicholoroethane(1,2-DCE) interface was investigated by cyclic voltammetry.We synthesized the thiadiazine derivative,PPTA,firstly.The transfer was performed at different metal concentrations and scan rates,and the obtained voltammetric transfer peaks toward Pb2+ ion over other divalent cations(Zn2+,Co2+,Ni2+,Cd2+,Hg2+,and Cu2+) were reversible.The dependence of the half-wave potentials of the Pb2+ ion on the concentration of PPTA in the organic phase indicates that the ion transfer is facilitated by the formation of 1:2(metal:ligand) complex in the organic phase with the association constant(lgβ2) of(17.1±0.2).

4-5 単層カーボンナノチューブを用いた表面修飾による固気界面の熱輸送促進機構の解析(セッション4:OS1-1 マルチスケール・シミュレーションとナノ計測)

4-5 単層カーボンナノチューブを用いた表面修飾による固気界面の熱輸送促進機構の解析(セッション4:OS1-1 マルチスケール・シミュレーションとナノ計測)

Neuroethics interface between neuroscience and the humanities

Neuroethics interface between neuroscience and the humanities

Economics and Psychology: Exciting Interface in the Emerging Market Milieu

Economics and Psychology: Exciting Interface in the Emerging Market Milieu

Power Management Classification

Bei der Erstellung von Energiemanagementsystemen ist eine Herangehensweise auf Basis einer strukturierten Vielfalt an Energiekomponenten unabdingbar. Mit der Power Management Classification (PMC) lassen sich Energiekomponenten in vier Klassen einteilen. Es handelt sich um ein neuartiges Ordnungsprinzip, welches die Komplexitat von Energiesystemen beherrschbar gestaltet. Die Klassifizierung dient als Grundlage fur Energiemanagementsysteme in der Energieversorgung, in der Smart-Grid-Technologie, in der Automatisierungstechnik, in der Elektromobilitat und im Energy Harvesting. Zusammen mit dem Power Management Interface (PMI) ermoglicht die PMC eine energetische Plug-In-Fahigkeit mit dem Einsatz eines Systemexplorers.

Single Molecule Experiments Visualizing Adsorbed Polyelectrolyte Molecules in the Full Range of Mono- and Divalent Counterion Concentrations

This work provides direct experimental verification (on the level of single molecules) for the behavior of hydrophobic polyelectrolyte chains adsorbed at a solid-liquid interface in the full range of possible salt concentrations: (a) in a dilute salt solution, PE chains possess an extended coil conformation visualized as adsorbed 2D-equilibrated coils; (b) in a moderate salt concentration range, the polymer coil shrinks and approaches the dimensions of a polymer coil under θ-conditions and the chains are visualized as adsorbed 3D-projected coils; (c) at high salt concentrations, the polymer coils reexpand and the molecules are visualized as 2D-equilibrated extended coils; however, (d) reexpansion is limited in the presence of multivalent counterions, presumably due to the bridging of the polymer coils by the counterions.