Related Experiment Video
Updated: Apr 27, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
Published on: July 30, 2019
Multi-species dynamical density functional theory
B D Goddard1, A Nold1, S Kalliadasis1
1Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom.
Abstract:
We study the dynamics of a multi-species colloidal fluid in the full position-momentum phase space. We include both inertia and hydrodynamic interactions, which strongly influence the non-equilibrium properties of the system. Under minimal assumptions, we derive a dynamical density functional theory (DDFT), and, using an efficient numerical scheme based on spectral methods for integro-differential equations, demonstrate its excellent agreement with the full underlying Langevin equations. We utilise the DDFT formalism to elucidate the crucial effects of hydrodynamic interactions in multi-species systems.
Related Concept Videos
Modeling with Differential Equations
Density
Multicompartment Models: Overview
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
What is Biodiversity?
Distribution and Dispersion
Speciation Rates

