Calibration of COBRA-TF and STAR-CCM+ with Dakota 6.5 for CASL

High-to-low (Hi2Lo) is utilizing a validated model in a high resolution code to generate synthetic data for improvement of the same model in a lower resolution code. This process is useful in cases where experimental data does not exist or is not sufficient. Data from the high resolution code is treated as calibration data (with appropriate uncertainties and error bounds) which can be used to train parameters that affect solution accuracy in the lower resolution code model and reduce uncertainty. Implementing the Hi2Lo process between COBRA-TF (CTF) and STAR-CCM+ (STAR) within a Dakota 6.5 framework is the goal of this work. High resolution results provided by STAR will eventually be used in addition to experimental data from Westinghouse Electric Company (WEC) to reduce uncertainty in the CTF model. The scope of the work presented herein is a proof of concept for deterministic calibration using Dakota and is not a demonstration of the Hi2Lo process. CTF temperatures will be calibrated to WEC experimental data as a first demonstration of the calibration process. Validation of the CTF model with experimental data was performed previously