FluctuatingImmersedBoundary

The FluctuatingImmersedBoundary integrator implements Brownian Dynamics with Hydrodynamic Interactions using the Fluctuating Immersed Boundary method for triply periodic systems. This integrator is a wrapper around the UAMMD BDHI::FIB integrator.

For more details on the underlying method, please refer to the UAMMD BDHI documentation.

type: BDHITriplePeriodic, FluctuatingImmersedBoundary
parameters:
- timeStep: real: Time step \([time]\)
- temperature: real: Temperature of the system \([energy]\)
- viscosity: real: Viscosity of the fluid \([mass/(distance \cdot time)]\)
- hydrodynamicRadius: real: Hydrodynamic radius of the particles \([distance]\) (default: 1.0)
- tolerance: real: Tolerance for the iterative solver (default: 1e-3)

Example:

"fib":{
  "type":["BDHITriplePeriodic","FluctuatingImmersedBoundary"],
  "parameters":{
    "timeStep": 0.01,
    "temperature": 1.0,
    "viscosity": 1.0,
    "hydrodynamicRadius": 0.5,
    "tolerance": 1e-4
  }
}

Note

This integrator is suitable for systems with periodic boundary conditions in all three dimensions.

Warning

This integrator assumes that particle masses are defined in the particle data.