[보고서]마이크로 유체유동 및 혼합해석 기술개발

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보고서 정보

주관연구기관

동아대학교
Donga University

연구책임자

서용권

보고서유형

최종보고서

발행국가

대한민국

언어

한국어

발행년월

2010-03

과제시작연도

2007

주관부처

과학기술부

사업 관리 기관

한국과학재단
Korea Science and Engineering Foundtion

등록번호

TRKO201000012945

과제고유번호

1355048468

DB 구축일자

2013-04-18

키워드

마이크로 유체유동,유체혼합,전기-삼투,가상경계법,입자,전기-영동,자기력,래티스-볼츠만,액적microfluidic flow,fluid mixing,electro-osmosis,immersed-boundary method,particle,electro-phoresis,magnetic force,lattice-Boltzmann,droplet

표 Schematic of a micro-fluidic system and some channel designs (LHS) and mixing patterns(RHS)
표 Three-dimensional serpentine channel.
표 Schematic diagram of the magnetic separation of biomolecules in the micro-device.
표 Miniaturized PCR "Palm PCR" (Ahram Biosystems).
표 Typical applications of microfluidic technology; diagnostics and LOC.
표 Streamlines of the pressure-driven flow at low Reynolds numbers.
표 Experimental apparatus for visualization of the electro-osmotic flow and AC-EOF in microchannels.
표 A pair of bottom ITO electrodes (photo) and the measured flowvelocity profile across the channel (plot).
표 Dynamical range of the cation's concentration during one period of AC.
표 Schematic illustrating the cation flux (horizontal arrows) in each of three layers and time change of the integrated cation-concentrations (inclined arrows)   and   . 
표 Picture taken from the experiment.
표 Slip velocity on the surface of electrodes under different frequencies.
표 Photo of particle trajectories taken from top (left) and particles trajectories at a cross section estimated from the photo (right).
표 Comparison of the slip velocities   obtained by the present numerical method at the standard parameter set (solid lines) with those of the experimental measurement reported by Green et al. (2002) (symbols linked by dashed lines) for (a) electrolyte A and (b) B.
표 Locus of local minimum error with parameter variation for electrolyte A (solid) and B (dash-dot).
표 Streamlines in the steady electroosmotic flow through a channel with rectangle-waved surface roughness for    and .
표 Variation of the flow rate with the wall-wave amplitude (left side; in the case of   ) and periodic length (right side; in the case of   ) according to the EDL thickness at   .
표 Schematic diagrams of the flow geometry and electrode array.
표 Profiles of the slip velocity measured at four different frequencies.
표 Comparsion of the slip velocity between the theoretical model and experimental measurement at different frequencies of the AC field
표 Structure of EDL: particle-wall interaction (left two plots); particle-particle interaction (right two plots).
표 Electrophoretic velocity and particle trajectories for the case of particle-wall interaction: variation of electrophoretic velocity (left); particle trajectories (right); with surface charge on the particle for fixed surface charge wall.
표 Vorticity contours at two different times for Re  and   .
표 Variation of St with in the range of 2.5 according to K and B for the flow at Re=100.
표 Ion distribution at the steady state when applied  V : cation (left) and anion (right).
표 Electroosmotically induced flow field: streamlines (left) and velocity vectors (right).
표 EDL interaction between a stationary charged particle and a charged wall, when the zeta potential on both the particle and the wall is -50 mV.
표 EDL interaction between a stationary charged particle and a charged wall, when the zeta potential on the particle is -50 mV and on the wall is +50 mV.
표 Instantaneous streamlines (left) and pressure contours (right) obtained by using LBE-BGK method for the viscous flow past a circular cylinder in a channel at Re=1000.
표 2D microchannel flow model (sketch) and mixing patterns (contour plots).
표 Experimental and numerical results of droplet formation in a cross-shape micro-channel.
표 Parallel computation of LBM
표 Variation of droplet generation in a cross-type microchannel depending on the amount of surfactant and flow-rate ratio.
표 3D cross-junction microchannel.
표 Comparison of numerical results with experimental ones.
표 Droplet size variation as a function of continuous phase (fluid B) flow rate.
표 Droplet size and distance between droplets as a function of continuous phase (fluid B) flow rate.
표 Comparison of actual flow rate of fluid A (QA) with calculated one from (1).
표 Droplet size variation as function of dispersed phase (fluid A) flow rate.
표 Droplet size and distance between droplets as function of dispersed phase (fluid A) flow rate.
표 Comparison of actual flow rate of fluid A (QA) with calculated one from (1).
표 Droplet size variation as function of capillary number.
표 Droplet size and distance between droplets as function of capillary number.
표 Particle distributions (left plots) and contour of thevertical velocity in the xy plane (z=0.175) (right plots) at t=10.4 for   ,    and   .
표 Mixing index according to the switching frequency for   ,    and   .
표 Trajectories of the particle located in the first quadrant of the pair located anti-symmetrically with the initial gap set t 2. Parameters are set at    with (a)    and   .
표 Motion of four particles with   ,   ,    and   .
표 Comparison among particle velocities obtained from various methods.
표 Motion of magnetic particles according to the reciprocal movement of a permanent magnet.
표 Motion of magnetic particles according to the reciprocal movement of a permanent magnet.
표 Concentration distribution in a microchannel equipped with trapezoi- dal electrodes
표 Distribution of concentrations showing different mixing patterns and performance for two types of the initial distribution of concentration.
표 (a) Unstable manifold obtained from a specially developed technique and (b) the experimentally visualized striation pattern given by Ottino for the alternate lid-driven cavity flow.
표 (a) Perspective view of the channel with crossed baffle structure and (b) comparison between the poincare section and the visualization experiment result at the cross section.
표 Lyapunov exponent at various initial positions (LHS) and the result of the Lyapunov exponent obtained via the specially developed program with the aid of ANSYS CFX (RHS).
표 For unsteady flow problem, example of applying a optimized design by using the program for getting the Lyapunov exponent
표 Comparison between the mixing indices obtained from the CFX and FSM results (LHS).
표 A microchannel mixer with trapezoidal electrodes on the bottom wall (LHS), and the numerical results (RHS) obtained from LBM (upper) and CFX (lower).
표 One example of patterning of four electrodes.
표 The experimental visualization for the ac-electroosmotic flow around a pair of electrodes.
표 The ITO pattern of four electrodes.
표 The experimental visualization for the ac-electroosmotic flow over the ITO electrode pattern.
표 The shape of a microchannel with a mixing chamber of diamond shape.
표 Experiment result of the mixing pattern within the mixing chamber with ITO electrode patterns.
표 Passive particles flowing through the T-channel for the experiment of mixing enhancement (LHS) caused by ac electro-osmosis with inclined ITO electrode pattern on the channel bottom wall.
표 Comparison between the original (LHS) and filtered (RHS) images. Top images show the case of bad mixing whereas the bottom ones show the case of good mixing.
표 Dimensionless intensity difference measured for several ac frequencies (LHS) and electrode angles (RHS).
표 Two dramatic views of the mixing performance
표 Design of the H-shaped network of microchannels (a) and the potential in V and the average velocity in ms viewed in the post mode (b).
표 Structure of the GUI program developed by C#.
표 Function of buttons in the GUI program
표 Design of a complex microchannel network (a) and a view of the post process showing the pressure in Pa and the average velocity in ms (b).
표 Flow regimes & fluid models for micro-channels
표 Regular (LHS) and zonal-embedded (RHS) grids in a circular domain.
표 Numerical (LHS) and experimental (RHS) results for a semi-circular flow problem; the zonalembedded grids were used in the numerics.
표 Numerical errors given by the application of the harmonic-function method in the interpolation for a test function.
표 Plot of the ratio of U (swimming velocity) and V(wave velocity) for various amplitudes.
표 Snapshots of filament(organism) and flow field at four different time instants in a period.
표 Velocity contour plot for the mid-section of the X-plane at two time instants.
표 (a) Schematic of a nano-channel containing water molecules and ions; the inner surfaces of walls are uniformly charged. (b) SPC/E model for the water molecule and body-fixed coordinates attached to it.
표 The number density of oxygen across the channel.
표 The ion concentration across the channel
표 The snapshots of the water molecules’ scatter obtained from the MD simulation at the time t = 0.5 ns showing top (upper) and side (lower) views
표 Cross-sectional view of the simulation set-up at the center of (a) YZ-plane and (b) XZ-plane.
표 Plots of     versus N for validating the developed code for the motion of polymer.
표 Translocation time versus the number of beads with and without the hydrodynamic motion.
표 Polymer configuration (N=300) of a typical translocation event at different times
표 Sketch of a quartz crystal resonator with electrodes on both sides and a viscoelastic overlayer attached on the external surface of the top electrode (LHS), and the equivalent electric circuit (RHS).
표 Comparison between calculated (lines) and measured (symbols) conductance (G) and susceptance (B) at   C (a) in the    and    planes; (b) in the    plane (Nyquist plot).
표 Temporal and spatial distribution of the profile of the overlayer displacement at three parameter sets representing 1st, and and 3rd harmonics of oscillation.
표 Values of (a)  and (b)  predicted by using the original formula (symbols) and the approximated ones (solid lines) based on the equivalent circuit from the experimental data of  max and  for the PE overlayer. The numbers, 1st, 2nd,…etc in these plots denote the modal number of the solution.

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마이크로 유체유동 및 혼합해석 기술개발
Development of numerical analysis for microfluidic flow and mixing 원문보기

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마이크로 유체유동 및 혼합해석 기술개발 Development of numerical analysis for microfluidic flow and mixing 원문보기

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마이크로 유체유동 및 혼합해석 기술개발
Development of numerical analysis for microfluidic flow and mixing 원문보기

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