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Home > Teams > MOST team: Turbulence Modelling and Simulation > Research activity > Past research activity

2019 - Axe 1 - Simulation of cavitation erosion by a coupled CFD-FEM approach

PhD of Prasanta Sarkar

Financial support : ITN CaFE

Collaboration : J.-P. Franc (LEGI-ENERGETIQUE) and M. Fivel (SIMAP)

This research is devoted to understanding the physical mechanism of cavitation erosion in compressible liquid flows on the fundamental scale of cavitation bubble collapse. As a consequence of collapsing bubbles near solid wall, high pressure impact loads are generated. These pressure loads are believed to be responsible for the erosive damages on solid surface observed in most applications. Our numerical approach begins with the development of a compressible solver capable of resolving the cavitation bubbles in the finite-volume solver YALES2 employing a simplified homogenous mixture model. The solver is extended to Arbitrary Lagrangian-Eulerian formulation to perform fluid structure interaction simulation with moving mesh capabilities. The material response is resolved with the finite element solver Cast3M, which allowed us to perform one-way and two-way coupled simulations between the fluid and solid domains. In the end, we draw comparisons between 2D and 3D vapor bubble collapse dynamics and compare them with experimental observations. The estimated pressure loads on the solid wall and different responses of materials for attached and detached bubble collapses are discussed. Finally, the damping of pressure loads by different materials is identified with two-way coupled fluid-structure interaction.

Publications

Peer-reviewed Publications

2021
Sarkar, P., Ghigliotti, G., Franc, J. - P., & Marc, F. (2021). Fluid–structure modelling for material deformation during cavitation bubble collapse. Journal of Fluids and Structures, 106, 103370.
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Sarkar, P., Ghigliotti, G., Franc, J. - P., & Marc, F. (2021). Mechanism of material deformation during cavitation bubble collapse. Journal of Fluids and Structures, 105, 103327.
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Conference Proceedings

2018
Sarkar, P., Ghigliotti, G., Fivel, M. C., & Franc, J. - P. (2018). Fluid-Structure Interaction model for collapsing cavitation bubble near deformable solid boundaries. In 10th International Symposium on Cavitation (CAV2018). Baltimore, United States.
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Sarkar, P., Ghigliotti, G., Fivel, M. C., & Franc, J. - P. (2018). Numerical investigation of the dynamics of pressure loading on a solid boundary from a collapsing cavitation bubble. In 10th International Symposium on Cavitation – CAV2018. Baltimore, United States.
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Ph.D. Theses

2019
Sarkar, P. (2019). Simulation of cavitation erosion by a coupled CFD-FEM approach. Ph.D. thesis, Université Grenoble Alpes, .
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