We present extensions of the macro-micro-coupling tool MaMiCo, which was designed to couple continuum fluid dynamics solvers with discrete particle dynamics. To enable local extraction of smooth flow field quantities especially on rather short time scales, sampling over an ensemble of molecular dynamics simulations is introduced. We provide details on these extensions including the transient coupling algorithm, open boundary forcing, and multi-instance sampling. Furthermore, we validate the coupling in Couette flow using different particle simulation software packages and particle models, i.e. molecular dynamics and dissipative particle dynamics. Finally we demonstrate the parallel scalability of the molecular-continuum simulations by using up to 65 536 compute cores of the supercomputer Shaheen II located at KAUST.

@article{MTMMFSOSNB17,
	author	 = {Philipp Neumann and Xin Bian},
	title	 = {{MaMiCo: Transient Multi-Instance Molecular-Continuum Flow Simulation on Supercomputers}},
	year	 = {2017},
	month	 = {07},
	publisher	 = {Elsevier},
	journal	 = {Computer Physics Communications},
	series	 = {220},
	pages	 = {390--402},
	issn	 = {0010-4655},
	doi	 = {https://doi.org/10.1016/j.cpc.2017.06.026},
	abstract	 = {We present extensions of the macro-micro-coupling tool MaMiCo, which was designed to
      couple continuum fluid dynamics solvers with discrete particle dynamics. To enable local
      extraction of smooth flow field quantities especially on rather short time scales, sampling
      over an ensemble of molecular dynamics simulations is introduced. We provide details on these
      extensions including the transient coupling algorithm, open boundary forcing, and
      multi-instance sampling. Furthermore, we validate the coupling in Couette flow using different
      particle simulation software packages and particle models, i.e. molecular dynamics and
      dissipative particle dynamics. Finally we demonstrate the parallel scalability of the
      molecular-continuum simulations by using up to 65 536 compute cores of the supercomputer
      Shaheen II located at KAUST.},
}