A particle-based micromechanics approach to simulate structural changes of plant cells during drying
Contribuinte(s) |
Gu, YuanTong Saha, Suvash C. |
---|---|
Data(s) |
28/11/2012
|
Resumo |
This paper is concerned with applying a particle-based approach to simulate the micro-level cellular structural changes of plant cells during drying. The objective of the investigation was to relate the micro-level structural properties such as cell area, diameter and perimeter to the change of moisture content of the cell. Model assumes a simplified cell which consists of two basic components, cell wall and cell fluid. The cell fluid is assumed to be a Newtonian fluid with higher viscosity compared to water and cell wall is assumed to be a visco-elastic solid boundary located around the cell fluid. Cell fluid is modelled with Smoothed Particle Hydrodynamics (SPH) technique and for the cell wall; a Discrete Element Method (DEM) is used. The developed model is two-dimensional, but accounts for three-dimensional physical properties of real plant cells. Drying phenomena is simulated as fluid mass reductions and the model is used to predict the above mentioned structural properties as a function of cell fluid mass. Model predictions are found to be in fairly good agreement with experimental data in literature and the particle-based approach is demonstrated to be suitable for numerical studies of drying related structural deformations. Also a sensitivity analysis is included to demonstrate the influence of key model parameters to model predictions. |
Formato |
application/pdf |
Identificador | |
Relação |
http://eprints.qut.edu.au/55471/1/A_Particle_Based_Micromechanics_Model%28ICCM_Gold_Coast%29.pdf http://www.iccm-2012.org/ Karunasena, H.C.P., Senadeera, Wijitha, Gu, YuanTong, & Brown, Richard J. (2012) A particle-based micromechanics approach to simulate structural changes of plant cells during drying. In Gu, YuanTong & Saha, Suvash C. (Eds.) Proceedings of 4th International Conference on Computational Methods (ICCM 2012), Crowne Plaza, Gold Coast, Australia. |
Direitos |
Copyright 2012 Please consult the author. |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; School of Civil Engineering & Built Environment; Science & Engineering Faculty |
Palavras-Chave | #091307 Numerical Modelling and Mechanical Characterisation #Smoothed Particle Hydrodynamics #SPH #Mesh free #Particle Methods #Plant cell models #Food drying #Cell micro mechanics |
Tipo |
Conference Paper |