Details
| Original language | English |
|---|---|
| Publication status | Published - Nov 2019 |
| Event | International Gas Turbine Congress (IGTC) 2019 - Toranomon Hills Forum, Tokyo, Japan Duration: 17 Nov 2019 → 22 Nov 2019 |
Conference
| Conference | International Gas Turbine Congress (IGTC) 2019 |
|---|---|
| Country/Territory | Japan |
| Period | 17 Nov 2019 → 22 Nov 2019 |
Abstract
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2019. Paper presented at International Gas Turbine Congress (IGTC) 2019, Japan.
Research output: Contribution to conference › Paper › Research
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TY - CONF
T1 - Enhanced Synthetic-Eddy-Method for Generating Moving Incoming Wakes and Turbulence in Scale-Resolving Simulations
AU - Zieße, Mark
AU - Herbst, Florian
AU - Müller-Schindewolffs, Christoph
AU - Seume, Jörg Reinhart
PY - 2019/11
Y1 - 2019/11
N2 - In this paper a synthetic-eddy-method (SEM) boundary condition is introduced for generating realistic turbulent inflow conditions, including wakes and freestream turbulence, for scale-resolving simulations (SRS) in turbomachinery applications. The functionality of the boundary condition is shown for a linear low-pressure turbine (LPT) cascade. Besides explaining the method for generating of the boundary condition, this paper focuses on the verification of the correct axial and pitch-wise convection of this boundary condition. For this verification, a concept is presented, which serves to confirm the correct functionality of this process. For generating the inflow boundary condition a SRS of a low-pressure turbine cascade with modern LPT blading and free stream turbulence in the inflow was first performed. Then the cascade exit wake of this simulation was extracted. Two simulations of the flow field upstream of the cascade were carried out: In the stationary case, the extracted boundary condition was convected axially. In the moving case, the boundary condition was convected axially and pitch-wise. Comparing the results of these two simulations, confirmed the correct function of the presented method.
AB - In this paper a synthetic-eddy-method (SEM) boundary condition is introduced for generating realistic turbulent inflow conditions, including wakes and freestream turbulence, for scale-resolving simulations (SRS) in turbomachinery applications. The functionality of the boundary condition is shown for a linear low-pressure turbine (LPT) cascade. Besides explaining the method for generating of the boundary condition, this paper focuses on the verification of the correct axial and pitch-wise convection of this boundary condition. For this verification, a concept is presented, which serves to confirm the correct functionality of this process. For generating the inflow boundary condition a SRS of a low-pressure turbine cascade with modern LPT blading and free stream turbulence in the inflow was first performed. Then the cascade exit wake of this simulation was extracted. Two simulations of the flow field upstream of the cascade were carried out: In the stationary case, the extracted boundary condition was convected axially. In the moving case, the boundary condition was convected axially and pitch-wise. Comparing the results of these two simulations, confirmed the correct function of the presented method.
M3 - Paper
T2 - International Gas Turbine Congress (IGTC) 2019
Y2 - 17 November 2019 through 22 November 2019
ER -