Combustion enhancement

PAC has been studied to widen the operating window of a gas turbine sequential combustor by extending the lean blow-off limit. The fundamental mechanisms of the effects of nanosecond repetitively pulsed discharges (NRPDs) on the sequential flame have been clarified using large eddy simulation (LES) with a detailed description of the relevant chemistry. Figure LES-PAC-SEQCOMB illustrates the LES computation of PAC inside the sequential combustor studied within the ERC TORCH project at the CAPS lab., ETH Zürich. More details in this publication.

Figure LES-PAC-SEQCOMB: Geometry of the second stage of the sequential combustor used for experiments and simulations at the CAPS lab., ETH Zürich. A temperature-coloured heat release rate (HRR) iso-contour illustrates the production of ignition kernels by the nanosecond repetitively pulsed discharges (NRPDs). More details in this journal publication.

This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement No. 820091).

This work was supported by a grant from the Swiss National Supercomputing Centre (CSCS) under project ID s1138.

We acknowledge PRACE for awarding us access to MareNostrum at the Barcelona Supercomputing Center (BSC), Spain (project ID 2021250004).