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The computational cost associated with the use of high-fidelity computational fluid complete design space of interest using as few simulation points as possible. Once constructed, the global surrogate model is reused in other stages of the computational engineering pipeline, such as sensitivity analysis. Sensitivity analysis of model output aims to quantify how a model depends on its input factors. Global sensitivity deter-mines the effect on model output of all the input parameters acting simultaneously over their ranges. Most global sensitivit