Numerical simulation of pulsation impinging jet arrays II (B04)

• Subject Area: Fluid Mechanics
• Term: from 2012 to 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 200291049

A pulsating impinging jet has substantially higher heat transfer than a non pulsating jet. The extra heat transfer comes from a vortex system impinging on the plate. This vortex system was shown to be related to the eigenmodes of the jet but it is unclear how it behaves under cross flow and curvature like in the realistic case in the turbine blade. On top of that it is not the linear eigenmode rather than a saturated limit cycle which is of interest. We investigate this limit cycle and its receptivity in order to optimize saturation. The interaction of several jets under cross flow and curvature is investigated numerically for a line array.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1029: TurbIn - Substantial Efficiency Increase in Gas Turbines through Direct Use of Coupled Unsteady Combustion and Flow Dynamics
• Applicant Institution: Technische Universität Berlin
• Project Heads: Professor Dr. Julius Reiss, until 6/2020; Professor Dr. Jörn Lothar Sesterhenn, until 10/2019