Figure 9.

The MUSCLE 3 diagram for this particular implementation of UQP3-B. The micro model has been replaced by a reduced surrogate, which receives the macroscopic state, and returns the ${\overline{G}}_u$ and ${\overline{G}}_v$ subgrid-scale (sgs) terms. The EasyVVUQ sampler provides the randomly drawn values of f and k to the macro model, and the MUSCLE 3 manager creates 28 different copies of the coupled system. Finally, this process is repeated on four different nodes of the Eagle supercomputer, leading to 112 output samples from which we compute the probability boxes.