Particle Methods

Particle Methods

This course teaches the foundations of Particle Methods. Particle methods are a numerical simulation framework that allows simulating both discrete and continuous systems. Particles can represent agents, such as cars in a traffic simulation, or mathematical discretization points, such as when numerically solving differential equations. Particle methods are the most versatile simulation framework and indeed the only one that allows seamless treatment of all types of models using the same algorithms and data structures. After this course, you will be able to implement and use particle-based simulations of both continuous and discrete systems.


Contents

particle methods for continuous systems, particle methods for discrete systems, time stepping schemes for particle methods, efficient data structures, efficient neighbor-finding algorithms, discretizing differential operators on particles, hybrid particle-mesh methods.


Time/Place
Summer Term

Lecture: Wednesdays, 3. DS (11:10-12:40) in APB-E006 (computer science building)
Exercises: upon agreement
NO LECTURE / NO EXERCISE ON: MAY 15, MAY 22 (Dies Academicus), JUNE 12 (Pentecoste break), JUNE 19 (Computer Science Anniversary)


Programs / Modules

M.Sc. Computational Modeling and Simulation, Modules: CMS-CLS-ELG, CMS-CMA-ELV1, CMS-CMA-ELV2, CMS-VC-ELV1, CMS-VC-ELV2

M.Sc./Diplom Computer Science, Module: INF-VERT7

M.Sc. Distributed Systems Engineering, Modules: DSE-14-E13, DSE-14-E14


Format

2 SWS lecture, 2 SWS exercise, self-study


Registration to the course

For students of the Master program "Computational Modeling and Simulation: via CampusNet SELMA

For students of the Computer Science programs: via jExam


Teachers

Lecture: Prof. Ivo F. Sbalzarini
Exercises: Pietro Incardona


Exam

Date/Time: July 16, 2019 / 9am-11am

Place: APB/E005 and APB/E006

Format: written
Duration: 90 minutes


At the exam, the following may be used:
  • 4 A4 sheets (8 pages if you print duplex) of hand-written summary. We recommend writing the summary by hand, but it can also be machine-written. In the latter case, the font size must be 8 points or larger throughout.
  • A standard pocket calculator (devices with network or bluetooth access, as well as devices capable of storing and displaying documents are not allowed)
Items not adhering to these guidelines will be confiscated in their entirety at the beginning of the exam.


Learning goals
  • Know efficient data structures and algorithms for particle methods

  • Software engineering and abstractions for particle simulations

  • Practical implementation of particle methods for discrete and continuous models

Lecture language: ENGLISH


Please find below the lecture syllabus and the handouts:
  • Lecture 1 - Administration and Introduction: what is modeling and simulation? What are particle methods?
  • Lecture 2 - Efficient data structures for short-range interactions: cell lists and Verlet lists (Exercise PDF, Solution ZIP)
  • Lecture 3 - Time stepping algorithms: explicit and implicit (Exercise PDF, Solution ZIP)
  • Lecture 4 - Error and stability of time stepping (Exercise PDF, Solution ZIP)
  • Lecture 5 - Particle methods for item-based models with stochastic dynamics; examples: population dynamics and chemical reactions (Exercise PDF, Solution ZIP)
  • Lecture 6 - Particle methods for item-based models with deterministic dynamics; example: granular flows and molecular dynamics (Exercise PDF, Solution ZIP)
  • Lecture 7 - Discretizing differential operators on particles: Smooth Particle Hydrodynamics (Exercise PDF, Solution ZIP)
  • Lecture 8 - Discretizing differential operators on particles: Particle Strength Exchange (Exercise PDF)
  • Lecture 9 - DC-PSE as a unifying framework for field-based particle simulations
  • Lecture 10 - Eulerian and Lagrangian simulations of field-based models. LOCATION FOR LECTURE 10 ONLY: CSBD, Seminar Room Ground Floor (Pfotenhauerstr. 108)
  • Lecture 11 - Hybrid particle-mesh methods and particle-mesh interpolation.
Script

Full lecture notes can be found here.


Project

The student project during the tutorials focuses on software engineering and on implementing a portable software library for particle-based simulations. Then, this library is used to perform different example simulation.