lattice boltzmann simulation of microstructures

... flow and heat transfer of nanofluids by the thermal Lattice Boltzmann model Prog Comput Fluid Dyn 2005, 5:13-19 24 Arcidiacono S, Mantzaras J: Lattice Boltzmann simulation of catalytic reactions ... nanofluid is a single phase fluid Hence, the equations of physical parameters of nanofluid are as follows: Density equation:  nf = (1 −  ) f +  p (18) where rnf is the density of nanofluid, ... capacity of nanofluid, Cpf is the heat capacity of water, and Cpp is the heat capacity of Al2O3 nanoparticles Dynamic viscosity equation [28]:  nf = where μnf is the viscosity of nanofluid, and...

Ngày tải lên: 21/06/2014, 05:20

... condition 57 Chapter III Lattice Boltzmann Simulations and Validations 63 3.1 Lattice Boltzmann simulation procedure 63 3.2 Some remarks on LBM simulations 64 iv 3.2.1 On simulations of steady and unsteady ... the order parameter 45 2.2.3 Lattice Boltzmann formulation for immiscible binary fluids 46 2.2.3.1 Lattice Boltzmann formulation - implementation A 48 2.2.3.2 Lattice Boltzmann formulation - implementation ... description of the problem 98 4.3.2 Effects of surface tension 99 4.3.3 Effects of lower wall wettability 100 4.3.4 Effects of body force direction 102 4.3.5 Effects of density ratio 103 4.3.6 Effects of...

Ngày tải lên: 14/09/2015, 14:10

... STANDARD LATTICE BOLTZMANN METHOD CHAPTER STANDARD LATTICE BOLTZMANN METHOD 2.1 The Lattice Gas Cellular Automata Before going through the Lattice Boltzmann Method (LBM), an overview is given of its ... Objectives and Scope of Study CHAPTER STANDARD LATTICE BOLTZMANN METHOD 15 16 2.1 Lattice Gas Cellular Automata 16 2.2 Basic Idea of LBM 24 2.3 BGK Approximation 27 2.4 Determination of Lattice Weights ... index of spatial dimension d number of spatial dimension b number of spatial dimension in Fermi-Dirac distribution z number of links Z number of discrete particle velocity vi N number of nodes...

Ngày tải lên: 16/09/2015, 12:42

... Overview of lattice Boltzmann method To understand the lattice Boltzmann method, it is necessary for us to review some basic aspects of LBM first In history, the lattice Boltzmann method comes from Lattice ... amplitude ci Vector of the i-th lattice velocity cim Vector of the i-th lattice velocity in the m-th sublattice cix , ciy Cartesian components of the i-th lattice velocity cs Speed of sound D (Spatial) ... 9.1.1 Development of a general platform for LBM 213 213 vi Table of Contents 9.1.2 Development of a lattice Boltzmann interface capturing model 214 9.1.3 Development of a lattice Boltzmann model...

Ngày tải lên: 13/09/2015, 21:34

... Interpolation-supplemented LBM LGCA lattice gas cellular automata LBE Lattice Boltzmann equation LB/LBM Lattice Boltzmann /Lattice Boltzmann method xxi LILBM Lagrangian interpolation based LBM NF Number of forcing/sub-iteration ... Thermal Lattice Boltzmann Method 92 4.1 Numerical methodology 93 4.1.1 Thermal lattice Boltzmann method 93 iv 4.1.2 Flexible forcing immersed boundary – thermal lattice Boltzmann ... and efficient version of IBM, coupled together with lattice Boltzmann fluid solver At first, we have proposed a 2D version of flexible forcing immersed boundary – lattice Boltzmann method (IB...

Ngày tải lên: 09/09/2015, 11:16

... Chapter Development of Thermal Lattice Boltzmann Flux Solver for Simulation of Thermal Incompressible Flows 70 3.1 Simplified thermal lattice Boltzmann model 71 3.2 Thermal Lattice Boltzmann Flux ... Immersed boundary method IB-LBM Immersed boundary- lattice Boltzmann method LBE Lattice Boltzmann equation LBFS Lattice Boltzmann flux solver LBM Lattice Boltzmann Method MEMS Micro-electromechanical ... Advantages and disadvantages of the LBE solver 20 1.4 Motivations and objectives of the thesis 21 1.5 Organization of the thesis 24 iii Chapter Development of Lattice Boltzmann Flux Solver for Isothermal...

Ngày tải lên: 09/09/2015, 11:22

... 3.3.3 Spreading of a droplet in the partial wetting regime 3.4 Concluding Remarks 63 65 Chapter Development of a Free Energy-Based Phase-Field Lattice Boltzmann Method for Simulation of Multiphase ... of this thesis will be presented at the end of the Chapter 1.2 Modeling of Multiphase Flow Thanks to the rapid development of algorithms and computational power, direct numerical simulation of ... phase-field method and lattice Boltzmann method considering the scope of this thesis 1.2.1 Navier-Stokes solvers for multiphase flow simulation In direct numerical simulation of multiphase flows,...

Ngày tải lên: 10/09/2015, 09:06

... 1.2.2.3 Advantages and disadvantages of IBM 10 1.3 Lattice Boltzmann Method 12 1.3.1 Features of LBM 12 1.3.2 Historic development of LBM 13 1.3.3 Implementation of boundary conditions in LBM 15 ... Organization of The Thesis 23 Chapter Development of Efficient Lattice Boltzmann Method on Non-Uniform 25 Cartesian Mesh 2.1 Standard LBM 26 2.2 Taylor Series Expansion and Least Squares-base Lattice Boltzmann ... lid-driven cavity flow 48 simulation Figure 2.6 Comparison of velocity profiles on the plane of y = 0.5 for 49 3D lid-driven cavity flow simulation Figure 2.7 Comparison of consumed CPU time for...

Ngày tải lên: 11/09/2015, 09:59

... direct simulation Monte Carlo, the lattice Boltzmann method, dissipative particle dynamics method, the molecular dynamics method, and so on 1.2 1.2.1 Lattice Boltzmann method Basis of lattice Boltzmann ... Taylor series expansion of the Maxwellian function in terms of Mach number is adopted to get a lattice Boltzmann version of polynomial form, which inevitably limits the range of Mach number To simulate ... i Summary v List of Figures vii List of Tables xi List of Symbols xii List of Abbreviation xv Introduction 1.1 Computational fluid dynamics 1.2 Lattice Boltzmann method...

Ngày tải lên: 14/09/2015, 14:01

... LIST OF FIGURES Page Figure Fig 2.1 The lattice velocities of D2Q7 and D2Q9 48 Fig 2.2 The lattice velocities of D3Q15 48 Fig 2.3 The lattice velocities of D3Q19 49 Fig 3.1 The configuration of ... these difficulties and lattice Boltzmann method is one of the outcomes Chapter Introduction 1.1.2.3 Lattice Boltzmann method The main difference between LGA and lattice Boltzmann method (LBM) ... geometries 1.2.3 Simulation of fluid turbulence 1.2.4 Multiphase and multi-component flows 10 1.2.5 Simulation of particles in fluids 11 1.2.6 Reaction & diffusion problems 12 1.2.7 Simulation of micro-flows...

Ngày tải lên: 16/09/2015, 17:13

... Figure 3-11 2D plot of 4th order room with walls 28 Simulation of a MIMO wireless system – John Fitzpatrick Figure 3-12 3D plot of 4th order room with walls 29 Simulation of a MIMO wireless system ... • m = row dimension of a • n = column dimension of a • w = returns the vector of singular values of a • v = returns the right orthogonal transformation matrix 33 Simulation of a MIMO wireless ... the number of transmitting antennas, which is three in this Simulation of a MIMO wireless system – John Fitzpatrick case Each of the lower bit rate sub streams are transmitted from one of the antennas...

Ngày tải lên: 20/11/2012, 11:36

... technique, Luleå University of Technology, Luleå, Sweden 2006, Master of Science in engineering physics, Luleå University of Technology, Luleå, Sweden 2006: Major field of study: heat transport ... diameter of 0.04 m and the shank spacing (pipe centre to pipe centre) is 0.05 m A total of 634,200 hexahedron and wedge-shaped volume element cells are used in the model The large amount of cells ... International Journal of Energy and Environment (IJEE), Volume 1, Issue 3, 2010, pp.399-410 402 simulation except the density, which uses the Boussinesq approximation during THT modelling All simulations...

Ngày tải lên: 05/09/2013, 14:58

... cost † Speed Using simulation allows us to find results of experiments in a speedy manner Simulation permits time compression of a system over an extended period of time † Simulation modeling ... number of variates generated as a Poisson variate 13.7 Case Studies This section presents examples on the simulation of wireless networks These are the simulation of an IEEE 802.11 wireless LAN, simulation ... the basics of simulation modeling and its application to wireless networking We started by introducing the fundamentals of discrete-event simulation, the basic building block of any simulation...

Ngày tải lên: 29/09/2013, 21:20

... factor of the degradation rate σ (t ) is an exponential function of time σ (t ) = e at +b In view of Eq (12.8) (12.13) 291 292 12 Modeling and Simulation of Microbial Depolymerization Processes of ... of chloroform, it is appropriate to assume that σ (t ) is an exponential function of time: 12.4 Analysis of Endogenous Depolymerization 0.12 Before degradation Simulation h Simulation h Simulation ... conversion from the class of (M + L)-molecules to the class of M molecules due to the β -oxidation 285 286 12 Modeling and Simulation of Microbial Depolymerization Processes of Xenobiotic Polymers...

Ngày tải lên: 25/10/2013, 08:20

... is one of the major sources of offset The sensor outputs have an offset of about 25mV, which saturates the preamplifier In experiments, the offset is cancelled by applying a DC voltage of about ... accelerometer - simulation o measured Figure 4.3: Simulation results of the frequency responds compared with experimental results proofmass of 0.5µg, resonant frequency 8kHz, and Q of Vfb_low is ... bending of beams can cause offset Figure 2.5 shows finite element analysis results of the resonant modes of a lateral accelerometer The simulation is done with Abaqus[16] The dimension of the sensor...

Ngày tải lên: 27/10/2013, 23:15

... is one of the major sources of offset The sensor outputs have an offset of about 25mV, which saturates the preamplifier In experiments, the offset is cancelled by applying a DC voltage of about ... accelerometer - simulation o measured Figure 4.3: Simulation results of the frequency responds compared with experimental results proofmass of 0.5µg, resonant frequency 8kHz, and Q of Vfb_low is ... bending of beams can cause offset Figure 2.5 shows finite element analysis results of the resonant modes of a lateral accelerometer The simulation is done with Abaqus[16] The dimension of the sensor...

Ngày tải lên: 22/12/2013, 08:16

... table of electromechanical analogs for inverse system [9] Fig Simulation circuit of VCS Fig Simulation scheme of power converter with phase control Simulation circuit with phase angle control of ... change of vibratory width is due to change of phase angle By decrease of phase angle, the effective voltage and coil current increase This is caused by increase of the oscillation amplitude of LCE ... vibratory drive VI SIMULATION RESULTS This section represents simulation results for cases of phase angle control and switch-mode current control We have taken parameters of the actuator and...

Ngày tải lên: 03/01/2014, 19:16

... use of small warheads Our previous studies of the use of the U.S Air Force 250-pound small What Is the Impact of Such Technologies in Combat? 29 Figure 4.7 Effect of Fires with Good Knowledge of ... Effect of MLRS with DPICM Without Good Knowledge of Enemy Positions 28 4.7 Effect of Fires with Good Knowledge of Enemy Positions 29 ix x Examining the Army’s Future Warrior 4.8 Effect of ... 4.11 Effects of Adding Very-High-Quality Body Armor 33 4.12 Effects of Further Reducing Signature 34 4.13 Effects of Outfitting Only a Portion of Force with XM-29 34 4.14 Effects of XM-29 and...

Ngày tải lên: 17/02/2014, 17:20

... well as recommendations [7, 8] VNU Journal of Science, Nat., Sci., & Tech., T.XXI, N02, 2005 Preliminary assessment and simulation of the water quality of Operating model with observed data for ... Ninh, Hà Nội, 1998, 60 trang VNU Journal of Science, Nat., Sci., & Tech., T.XXI, N02, 2005 Preliminary assessment and simulation of the water quality of Trần Đức Hạ, Báo cáo đề tài nghiên cứu ... exceeding the limited value of class B - surface waters quality standard of Vietnam (TCVN 5942/95/B) [4, 9] The two reasons for this situation are the discharges of cattle waste into channels...

Ngày tải lên: 05/03/2014, 10:20