High-fidelity optical turbulence simulation for long-range laser communication

1. Peta-scale direct numerical simulation of stably stratified turbulent flow

  • Massively parallel direct numerical solver that scales well up to 10 billion cells and 10,000 CPU cores
  • Understanding the fundamental spatial-temporal characteristics of intermittent turbulence
  • Open source code Hercules

References:

2. Construction of novel optical turbulence models using numerically generated turbulence dataset

  • Construction of a comprehensive turbulence dataset using numerous DNS simulations
  • Proposing a novel gradient-based turbulence model based on the DNS dataset
  • Incorporating the new turbulence model into a mesoscale model and the numerical prediction agrees well with experiments

References:

  • Opt. Express 2016 Paper [Doi][preprint]
  • Environ. Fluid Mech. 2015 Paper [Doi]

3. Coupled mesoscale modeling and ray tracing framework for long-range wave propagation

  • Efficient ray tracing method to predict the optical ray trajectory
  • Incorporate the ray tracing code with mesoscale model to predict time-dependent long-range optical wave propagation

References:

  • Meterol. Atmos. Phys. 2015 Paper1 [Doi]
  • Meterol. Atmos. Phys. 2015 Paper2 [Doi]