DOI: https://doi.org/10.1115/gt2020-16026Jan 15, 2021Proceedings Paper

Development and Validation of a Continuous Random Walk Model for Particle Tracking in Accelerating Flows

Marios KapsisMatthew McGilvray

Abstract

Stochastic particle tracking models coupled to RANS fluid simulations are frequently used to simulate particulate transport and hence predict component damage in gas turbines. In simple flows the Continuous Random Walk (CRW) model has been shown to model particulate motion in the diffusion-impaction regime significantly more accurately than Discrete Random Walk implementations. To date, the CRW model has used turbulent flow statistics determined from DNS in channels and experiments in pipes. Robust extension of the CRW model to accelerating flows modelled using RANS is important to enable its use in design studies of rotating engine-realistic geometries of complex curvature.

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