PiCASSO XL - Particle Collisions in Natural Waterways
Abstract
The project PiCASSO XL aims at developing a process understanding of impact entrainment in a real-scale river setting. Therefore, a collision model for arbitrary particle shapes, in particular for concave shapes is needed because convex-concave collisions occur frequently when particles move along a river bed. It also requires to capture the turbulent flow field and particle collisions in a real-scale setting. Based on our collision model for arbitrary convex shapes which was developed in the framework of the PiCASSO project, a general collision model including concave shapes will be developed. The model will be validated against high-resolution experimental data of the 3D flow field during the collision. In addition, the colliding particles are "smart". They are equipped with a microcontroller measuring 3D acceleration and forces. To study collisions in a real-scale setting a combined experimental and numerical approach is chosen. In our experimental “Big Flume” a natural alpine river bed will be built. Flow rates up to 10m^3/s ensure turbulent conditions found in natural rivers (Re ~ 10^6). The flow field and the collisions will be captured by means of Laser Doppler Velocimetry and “smart” particles. Accompanied Large Eddy Simulations using a fluid structure interaction code and our collision model will provide high-resolution data of the turbulent flow field and the collisions. As a result of the project the role of particle shape in bed load sediment transport will be understood at grain-scale in a real-scale river setting. The general collision model is validated and can be used to study various problems ranging from industrial processes to practical river engineering questions. As an example, the effect of angular vs. round sediment addition to stop river degradation can be studied.
Publikationen
Project staff
Christine Sindelar
Priv.-Doz. Dipl.-Ing. Mag. Dr.techn. Christine Sindelar
christine.sindelar@boku.ac.at
Tel: +43 1 47654-81944
Project Leader
01.01.2024 - 31.12.2026
Thomas Gold
Dipl.-Ing. Thomas Gold
thomas.gold@boku.ac.at
Tel: +43 1 47654-81937
Project Staff
01.01.2024 - 31.12.2026
Kevin Reiterer
Dipl.-Ing. Kevin Reiterer
kevin.reiterer@boku.ac.at
Tel: +43 1 47654-81937
Project Staff
01.01.2024 - 31.12.2026
Dominik Worf
Dipl.-Ing. Dominik Worf
dominik.worf@boku.ac.at
Tel: +43 1 47654-81937
Project Staff
01.01.2024 - 31.12.2026