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Turbulence modeling usind the ODT model
The One-Dimensional Turbulence (ODT) model is an original and interesting simulation method. It allows affordable computations of complex quantities such as turbulent kinetic energy budget terms and multi-point statistics at the cost of an applicability limited to certain categories of flows.
Keywords: Turbulence research
Stochastic modeling
Numerical study
Turbulence models are and will remain necessary for industrial applications as for a given computational power, they allow us to reach higher Reynolds numbers than _Direct Numerical Simulations_ (DNS) and they can describe with sufficient accuracy flows that are not accessible at all to DNS simulations.
The well known _Reynolds Averaged Navier-Stokes_ (RANS) models and _Large Eddy Simulations_ (LES) aim at providing a description of 3D turbulent flows with a reduced resolution. The model used in this work uses a different path to reduce the computational costs: it reduces the dimensionality of the problem instead of the resolution.
In the _One-Dimensional Turbulence model_ (ODT) , only one spatial dimension is numerically computed but all the scales are resolved. This is of interest for problems like mixing, combustion etc, where all scales play an important role in the flow dynamics. ODT uses stochastic remapping processes to take the effect of 3D eddies on the 1D domain into account.
A possible project would include the following tasks
- Reviewing literature and understanding the ODT principle
- Implementing a sub-model in an existing code
- Running test studies
- Documenting the work in a report.
Turbulence models are and will remain necessary for industrial applications as for a given computational power, they allow us to reach higher Reynolds numbers than _Direct Numerical Simulations_ (DNS) and they can describe with sufficient accuracy flows that are not accessible at all to DNS simulations.
The well known _Reynolds Averaged Navier-Stokes_ (RANS) models and _Large Eddy Simulations_ (LES) aim at providing a description of 3D turbulent flows with a reduced resolution. The model used in this work uses a different path to reduce the computational costs: it reduces the dimensionality of the problem instead of the resolution.
In the _One-Dimensional Turbulence model_ (ODT) , only one spatial dimension is numerically computed but all the scales are resolved. This is of interest for problems like mixing, combustion etc, where all scales play an important role in the flow dynamics. ODT uses stochastic remapping processes to take the effect of 3D eddies on the 1D domain into account.
A possible project would include the following tasks - Reviewing literature and understanding the ODT principle - Implementing a sub-model in an existing code - Running test studies - Documenting the work in a report.
Not specified
Interested candidates please send an email with a recent transcript of records to giddey (at) ethz (dot) ch
Interested candidates please send an email with a recent transcript of records to giddey (at) ethz (dot) ch