Numerical simulations and measurements of a droplet size distribution in a turbulent vortex street

A turbulent vortex street in an air flow interacting with a disperse droplet population is investigated in a wind tunnel. Non-intrusive measurement techniques are used to obtain data for the air velocity and the droplet velocity. The process is modeled with a population balance system consisting of the incompressible NavierStokes equations and a population balance equation for the droplet size distribution. Numerical simulations are performed that rely on a variational multiscale method for turbulent flows, a direct discretization of the differential operator of the population balance equation, and a modern technique for the evaluation of the coalescence integrals. After having calibrated two unknown model parameters, a very good agreement of the experimental and numerical results can be observed.

Keywords

Two-phase turbulent vortex street, disperse droplet population, non-intrusive measurements, population balance systems, direct discretizations

URI

https://doi.org/10.34657/2758
https://oa.tib.eu/renate/handle/123456789/3091

Citation

Schmeyer, E., Bordás, R., Thévenin, D., & John, V. (2014). Numerical simulations and measurements of a droplet size distribution in a turbulent vortex street (Vol. 1917). Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik.

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Mathematik

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