In many situations across computational science and engineering, multiple computational
models are available that describe a system of interest. These different models have varying …

Full scale aerodynamic wind tunnel testing, numerical simulation of high dimensional (full-
order) aerodynamic models or flight testing are some of the fundamental but complex steps …

This article provides an overview of multi-fidelity modeling trends. Fidelity in modeling refers
to the level of detail and accuracy provided by a predictive model or simulation. Generally …

Multifidelity surrogates are essential in cases where it is not affordable to have more than a
few high-fidelity samples, but it is affordable to have as many low-fidelity samples as …

For the simulation-based hull form optimization design, there are many methods to evaluate
the hydrodynamic performance of the hull form. Although the high fidelity of the surrogate …

In today's competitive environment, new turbomachinery designs need to be not only more
efficient, quieter, and “greener” but also need to be developed at on much shorter time …

A novel formulation of gradient-enhanced surrogate model, called weighted gradient-
enhanced kriging, is proposed and used in combination with the cheap gradients obtained …

Metamodeling, the science of modeling functions observed at a finite number of points,
benefits from all auxiliary information it can account for. Function gradients are a common …

Multi-fidelity surrogate (MFS) method is very promising for the optimization of complex
problems. The optimization capability of MFS can be improved by infilling samples in the …

In this paper a derivative-enhanced variable-fidelity surrogate model approach is developed
based on a cokriging formulation. In this approach the absolute values of a high-fidelity …