MODELLING OF SIMULTANEOUS MOISTURE LOSS AND SHRINKAGE DURING DEHYDRATION OF PEAR TISSUE
A coupled water transport and mechanical deformation model was developed to simulate water transport in long cylindrical samples of inner cortex tissue of apple (cv. Jonagored). The model considered the tissue as an isotropic continuum material with apparent properties. These properties were determined by independent experiments. The finite element method was used to solve the governing differential equations over the 2D geometry of the circular cross section of the cylinders. The validated model explained water transport and shrinkage reasonably well as validated by X-ray computed tomography (CT). X-ray CT allowed simultaneous non-destructive evaluation of sample shape changes and the development of water profiles in the samples as a function of time during a dehydration experiment. The model will be used to investigate fruit shrivelling as a result of water loss during storage and shelf life.
T.A.Nguyen P.Verboven G.Kerckhofs A.-S.Poupeleer N.Scheerlinck M.Wevers J.Carmeliet Bart M.Nicola(i)
BIOSYST-MeBioS, K.U.Leuven, W. de Croylaan 42, B-3001 Leuven, Belgium Research Group on Materials Performance and Non-Destructive Evaluation, K.U.Leuven, Belgium Laboratory of Building Physics, K.U.Leuven, Belgium
国际会议
The 22nd International Congress of Refrigeration(第22届国际制冷大会)
北京
英文
2007-08-21（万方平台首次上网日期，不代表论文的发表时间）