A hybrid lagrangian-eulerian approach for simulation of bubble dynamics
dc.contributor.author | Apte, S. | en_US |
dc.contributor.author | Shams, E. | en_US |
dc.contributor.author | Finn, J. | en_US |
dc.date.accessioned | 2011-05-26T17:39:00Z | |
dc.date.available | 2011-05-26T17:39:00Z | |
dc.date.issued | 2009-08 | en_US |
dc.identifier | CAV2009-74 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/84270 | en_US |
dc.description.abstract | A mutiscale numerical approach is developed for the investigation of bubbly flows in turbulent environments. This consists of two different numerical approaches capable of capturing the bubble dynamics at different scales depending upon the relative size of the bubbles compared to the grid resolution: (i) fully resolved simulations (FRS) wherein the bubble dynamics and deformation are completely resolved, and (ii) subgrid, discrete bubble model where the bubbles are not resolved by the computational grid. For fully resolved simulations, a novel approach combining a particle-based, mesh-free technique with a finite-volume flow solver, is developed. The approach uses marker points around the interface and advects the signed distance to the interface in a Lagrangian frame. Interpolation kernel based derivative calculations typical of particle methods are used to extract the interface normal and curvature from unordered marker points. Unlike front-tracking methods, connectivity between the marker points is not necessary. For underresolved bubbles, a mixture-theory based Eulerian-Lagrangian approach accounting for volumetric displacements due to bubble motion and size variations is developed. The bubble dynamics is modeled by Rayleigh-Plesset equations using an adaptive timestepping scheme. A detailed verification and validation study of both approaches is performed to test the accuracy of the method on a variety of single and multiple bubble problems to show good predictive capability. Interaction of bubbles with a traveling vortex tube is simulated and compared with experimental data of Sridhar and Katz [1] to show good agreement. | en_US |
dc.relation.ispartofseries | CAV2009 - 7th International Symposium on Cavitation, 16-20 August 2009, Ann Arbor, MI | en_US |
dc.title | A hybrid lagrangian-eulerian approach for simulation of bubble dynamics | en_US |
dc.type | Article | en_US |
dc.contributor.affiliationother | Oregon State University; Oregon State University; Oregon State University | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/84270/1/CAV2009-final74.pdf | |
dc.owningcollname | Mechanical Engineering, Department of |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.