Monte-carlo Simulation of Soot Aggregation with Simultaneous Surface Growth — Why Primary Particles Appear Spherical

Parameter free aggregation model for soot formation

In this article we present a parameter free aggregation model for soot formation. Each soot particle is represented as a fractal aggregate that can be described by its total volume, total surface, and number of hydrogenated sites on its surface. The moments of the joint Probility Density Function (PDF) of these three quantities are solved using the Direct Quadrature Method of Moments (DQMOM). T...

Modeling of a Turbulent Ethylene/air Jet Flame Using Hybrid Finite Volume/monte Carlo Methods

Detailed modeling of an experimental ethylene/air jet flame is undertaken using the composition PDF method for gas-phase kinetics coupled with detailed models for soot formation and radiation from the flames. The gas-phase kinetics is modeled using a reduced mechanism for ethylene consisting of 33 species and 205 elementary reactions. The soot formation is modeled using the method of moments wi...

Molecular Simulation of Asphaltene Aggregation in Crude Oil by Monte Carlo Method

Calculation of the Equivalent Dose of the First and the Most Important Secondary Particles in Brain Proton Therapy by Monte Carlo Simulation

Introduction: Due to nuclear interactions between the tissues and high-energy protons, the particles, including neutrons, positrons, and photons arise during proton therapy. This study aimed at investigating the dose distribution of proton and secondary particles, such as positrons, neutrons, and photons using the Monte Carlo method. Material and Methods:<...

Particle aggregation with simultaneous surface growth.

Particle aggregation with simultaneous surface growth was modeled using a dynamic Monte Carlo method. The Monte Carlo algorithm begins in the particle inception zone and constructs aggregates via ensemble-averaged collisions between spheres and deposition of gaseous species on the sphere surfaces. Simulations were conducted using four scenarios. The first, referred to as scenario 0, is used as ...