Modelling of solid bodies in dissipative particle dynamics

Mai-Duy, N. and Phan-Thien, N. and Khoo, B. C. and Tran-Cong, T. (2013) Modelling of solid bodies in dissipative particle dynamics. In: 3rd International Conference on Particle-based Methods Fundamentals and Applications (Particles 2013): Particle-Based Methods III: Fundamentals and Applications , 18-20 Sep 2013, Stuttgart, Germany.

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Abstract

This paper is concerned with the use of oscillating particles instead of the usual frozen particles to model a suspended particle (solid body) in a Dissipative Particle Dynamics (DPD) particle-based simulation method. A suspended particle is represented by a set of basic DPD particles connected to reference sites by linear springs. The reference sites are moved as a whole with the imposed displacement that is calculated using data from the previous time step, while the velocities of their associated DPD particles are found by solving the DPD equations at the current time step. In this way, a specified Boltzmann temperature can also be maintained in the region occupied by the suspended particles and this parameter can be utilised to control the size of suspended particles. Several numerical results in two dimensions are presented to demonstrate attractiveness of the proposed model.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © The authors.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 23 Mar 2014 05:25
Last Modified: 16 Sep 2014 04:59
Uncontrolled Keywords: particulate suspensions; dissipative particle dynamics; soft potential; spring model; thermodynamic temperature
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics
02 Physical Sciences > 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics > 020203 Particle Physics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970101 Expanding Knowledge in the Mathematical Sciences
URI: http://eprints.usq.edu.au/id/eprint/24999

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