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Mesoscale Modeling of Complex Fluids and Phase Change Processes

(Funding: Nano-Bio Interface Center , Office of Naval Research )

A new research direction in our group is mesoscale modeling of fluids. The goal of this research is to develop computationally tractable simulation methods that provide new capabilities for probing important fluid transport phenomena at the subcontinuum level. Work in this area includes the following projects:

 
General Framework for Dissipative Particle Dynamics Simulations of Multicomponent Fluids
 

We have developed a general framework for mesoscopic particle based transport simulations of flow and heat transfer in multicomponent fluids. This framework, based on the dissipative particle dynamics approach, accounts for important contributions to the dynamic response not accessible at the typical length and time scales used in molecular dynamics simulations. These contributions include hydrodynamic coupling between the fluid and the suspended phase and thermal fluctuations at mesoscopic scales.

 
 
Nano-Textured Surfaces for Enhanced Heat Transfer at the Solid-Liquid Interface
 

We have recently begun a new project whose goal is to investigate phase change heat transfer enhancement at surfaces with nanometer-scale patterns. To do this, we are establishing new multiscale simulation approaches to enable 'visualization' of boiling processes at an unprecedented level of spatial detail. The target application of this project is thermal management of high heat flux electronics.

image from http://www.electronics-cooling.com/assets/images/2005_November_Article2_Figure13.jpg
 
 
 
Relevant Publications
 
A. Chaudhri and J. R. Lukes, 2007, Multicomponent Dissipative Particle Dynamics: Formulation of a General Framework for Simulations of Complex Fluids, in review.
 
A. Chaudhri and J. R. Lukes, 2008, Multicomponent Energy Conserving Dissipative Particle Dynamics: A General Framework for Mesoscopic Heat Transfer Applications, Proceedings of the 1st International Conference on Micro/Nanoscale Heat Transfer, MNHT2008-52218.
 
 
                   

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