Large eddy simulations of cryogenic oxygen jets in crossflow under supercritical pressure conditions

In this contribution, we present a Large-Eddy Simulation (LES) dataset consisting of cryogenic jets in crossflow under supercritical conditions. Such a dataset and configuration are well-suited for investigating the interaction between the burnt gases and a diluent jet, specifically cryogenic oxygen (LOx) in the present case. While the jet in crossflow configuration has been extensively investigated in the context of ideal gases, supercritical pressure conditions, and cryogenic jets have received significantly less attention, which motivates the present study. A series of LES are carried out using an in-house modified solver based on the OpenFOAM framework, featuring a tabulated chemistry approach with a consistent real-fluid formulation. The numerical framework is validated using a reference work that combines experimental and numerical results. The role of the two main parameters, the momentum flux ratio and jet Reynolds number, is investigated through an extensive parametric analysis under relevant LRE conditions, i.e., supercritical pressure 100 bar and cryogenic LOx temperatures. The jet penetration and dilution capabilities of the LOx jet are evaluated, and the results are discussed in the context of standard semi-empirical correlations developed for atmospheric jets. The development of data-driven reduced-order models that leverage the LES dataset is also discussed.