# multiphase flow modelling

## Lattice Boltzmann Method-1

Kinetic Theory and micro-macro relations Pressure and Temperature are related to kinetic energy of particle as, Phase space and probability distribution function A coordinate system comprising position and velocity can be used to express the dynamics of a system. Such a system is called phase space. In general, the dynamics of a point in the …

## Multiphase flow modelling – 2: Lagrangian particle tracking

Parameters Maximum number of particles: npmax Particle diameter: dp Particle density: rhop Fluid density: rhof Particles flow rate: PFR (number of particles entering per second) Particle inlet velocity: up_in Two-way coupling(Boolean): use_twoway Define a derived data type for particle with following detail double x, y : position int i,j : mesh location double u,v : …

## Multiphase flow modelling – 1: Development of a basic flow solver

learned from Oliver Desjardins’ lecture (notes) Development of a basic flow solver Incompressible flow Structured 2D staggered grid P-U coupling by Fractional Step Method(simplified version of Kim and Moin, 1985) 2d N-S eqn Spatial discretization Gradient and Laplacian term of pressure by standard second order central differensing scheme. The fractional step method Original fractional step …