Book chapter
MULTISCALE APPROACH TO MODELING PARTICLE SOLIDIFICATION FRONT INTERACTIONS
Solidification Processing of Metal Matrix Composites : Rohatgi Honorary Symposium, pp.321-330
Wiley
01/01/2006
Abstract
Predicting microstructures of metal-matrix composites (MMC) requires an understanding of how solidification fronts interact with particles. The particle-solidification front interaction is a multiscale process as the dynamics at the micro-scale hinges on the interactions between the front and the particle, which occurs across a nano-scale gap. In these systems, the solution of the Navier-Stokes equations including the nano-scale gap between their interacting surfaces would be impossible due to resolution demands placed on the mesh. Therefore an embedded model for solution in the gap is needed. This model takes the form of a lubrication equation with disjoining pressure acting as a body force and is coupled to the solution outside the gap that is solved using the Navier-Stokes equations. A sharp-interface method is used to track the interfaces. This method illustrates a new way of predicting the critical velocity and allows for an in-depth analysis of the physics that cause particle pushing/engulfment.
Details
- Title: Subtitle
- MULTISCALE APPROACH TO MODELING PARTICLE SOLIDIFICATION FRONT INTERACTIONS
- Creators
- Justin W GarvinYi YangH S Udaykumar
- Resource Type
- Book chapter
- Publication Details
- Solidification Processing of Metal Matrix Composites : Rohatgi Honorary Symposium, pp.321-330
- Publisher
- Wiley
- Language
- English
- Date published
- 01/01/2006
- Academic Unit
- Injury Prevention Research Center; Mechanical Engineering
- Record Identifier
- 9984121867902771
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