پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 161 |
| تعداد شمارهها | 6,532 |
| تعداد مقالات | 70,500 |
| تعداد مشاهده مقاله | 124,090,663 |
| تعداد دریافت فایل اصل مقاله | 97,194,445 |
Simulation of Stresses Induced by Heat and Mass Transfer in Drying Process of Clay-like Material | ||
| Journal of Computational Applied Mechanics | ||
| مقاله 3، دوره 48، شماره 2، اسفند 2017، صفحه 171-184 اصل مقاله (770.78 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/jcamech.2017.236932.159 | ||
| نویسندگان | ||
| Mohsen Heydari* 1؛ Khalil - Khalili2؛ Yousef Ahmadi3 | ||
| 1Ph.D. Student, Mech. Eng., University of Birjand, Birjand, Iran | ||
| 2Department of mechanical engineering, University of Birjand, Birjand,Iran | ||
| 3Assoc. Prof., Mech. Eng., University of Birjand, Birjand , Iran | ||
| چکیده | ||
| Drying represents one of the oldest unit operations employed in industrial processes. Drying is viewed as a process of simultaneous heat and mass transfer. Porous Clay-like material undergoes stresses due to non-uniform distribution of temperature and moisture induced by heat and mass transfer respectively. The aim of this work is to simulate the stresses induced by heat and mass transfer during drying. A mathematical model to simulate the convective drying of a porous material like clay has been developed. The problem investigated involves highly coupled equations considering heat, mass, and mechanical aspects. The particularity of the model is that it takes into account the strong coupling between mass transport, heat transport and mechanical behavior of the material. The variables of coupling are the solid deformation, moisture content and temperature of porous medium. A numerical solution is sought to foresee the variation of moisture content, temperature, shrinkage, heat transfer induced stresses and mass transfer induced stresses during drying. The solution developed as a model is capable of predicting the quality of the product through a failure criterion. The model is validated through the comparison of simulated and experimental data. Simulation results show that the heat transfer induced stresses are significantly less important in compression with the mass transfer induced stresses and can be neglected in modeling of drying process. | ||
| کلیدواژهها | ||
| Convective drying؛ modeling؛ Drying Stresses؛ Heat transfer؛ Mass Transfer | ||
| مراجع | ||
|
[1] K. Chua, A. Mujumdar, M. Hawlader, S. Chou, J. Ho, Convective drying of agricultural products. Effect of continuous and stepwise change in drying air temperature, Drying Technology, Vol. 19, No. 8, pp. 1949-1960, 2001.
[2] G. Musielak, D. Mierzwa, Permanent strains in clay-like material during drying, Drying Technology, Vol. 27, No. 7-8, pp. 894-902, 2009.
[3] K. Khalili, S. y. Ahmadi-Brooghani, M. Bagherian, Experimental and numerical study of the ceramic drying process and cracking, Journal of Solid and Fluid Mechanics, Vol. 4, pp. 119-129, 2014.
[4] M. Heydari, K. Khalili, Investigation on the Effect of Young's Modulus Variation on Drying-Induced Stresses, Transport in Porous Media, Vol. 112, No. 2, pp. 519-540, 2016.
[5] S. J. Kowalski, 2003, Thermomechanics of drying processes, Springer Berlin Heidelberg,
[6] M. Vasić, Ž. Grbavčić, Z. Radojević, Determination of the moisture diffusivity coefficient and mathematical modeling of drying, Chemical Engineering and Processing: Process Intensification, Vol. 76, pp. 33-44, 2014.
[7] S. Chemkhi, F. Zagrouba, A. Bellagi, Mathematical model for drying of highly shrinkable media, Drying Technology, Vol. 22, No. 5, pp. 1023-1039, 2004.
[8] W. P. da Silva, C. M. D. P. da Silva, L. D. da Silva, V. S. de Oliveira Farias, Drying of clay slabs: experimental determination and prediction by two-dimensional diffusion models, Ceramics International, Vol. 39, No. 7, pp. 7911-7919, 2013.
[9] M. R. Islam, A. Mujumdar, Role of product shrinkage in drying rate predictions using a liquid diffusion model, International communications in heat and mass transfer, Vol. 30, No. 3, pp. 391-400, 2003.
[10] J. Esfahani, H. Majdi, E. Barati, Analytical two-dimensional analysis of the transport phenomena occurring during convective drying: apple slices, Journal of Food Engineering, Vol. 123, pp. 87-93, 2014.
[11] D. Mihoubi, A. Bellagi, Stress generated during drying of saturated porous media, Transport in porous media, Vol. 80, No. 3, pp. 519-536, 2009.
[12] H. F. Oztop, E. K. Akpinar, Numerical and experimental analysis of moisture transfer for convective drying of some products, International Communications in Heat and Mass Transfer, Vol. 35, No. 2, pp. 169-177, 2008.
[13] R. Lewis, M. Strada, G. Comini, Drying‐induced stresses in porous bodies, International Journal for Numerical Methods in Engineering, Vol. 11, No. 7, pp. 1175-1184, 1977.
[14] S. Chemkhi, W. Jomaa, F. Zagrouba, Application of a coupled thermo-hydro-mechanical model to simulate the drying of nonsaturated porous media, Drying technology, Vol. 27, No. 7-8, pp. 842-850, 2009.
[15] K. Khalfaoui, S. Chemkhi, F. Zagrouba, Modeling and stress analysis during drying of a deformable and saturated porous medium, Drying technology, Vol. 31, No. 10, pp. 1124-1137, 2013.
[16] F. Couture, S. Laurent, M. A. Roques, Drying of two‐phase media: Simulation with liquid pressure as driven force, AIChE journal, Vol. 53, No. 7, pp. 1703-1717, 2007.
[17] F. Augier, W. Coumans, A. Hugget, E. Kaasschieter, On the risk of cracking in clay drying, Chemical Engineering Journal, Vol. 86, No. 1, pp. 133-138, 2002.
[18] K. Khalili, M. Heydari, Studying the effect of part thickness on cracking during drying process, Modares Mechanical Engineering, Vol. 12, No. 3, pp. 103-116, 2012.
[19] M. Ganjiani, A damage model incorporating dynamic plastic yield surface, Journal of Computational Applied Mechanics, Vol. 47, No. 1, pp. 11-24, 2016.
[20] F. Pourcel, W. Jomaa, J.-R. Puiggali, L. Rouleau, Criterion for crack initiation during drying: Alumina porous ceramic strength improvement, Powder Technology, Vol. 172, No. 2, pp. 120-127, 2007.
[21] A. A. J. Ketelaars, Drying deformable media: Kinetics, shrinkage and stresses(Ph. D. Thesis), Thesis, University of Eindhoven 1993.
[22] S. Kowalski, G. Musielak, J. Banaszak, Experimental validation of the heat and mass transfer model for convective drying, Drying Technology, Vol. 25, No. 1, pp. 107-121, 2007.
[23] M. Van Belleghem, M. Steeman, H. Janssen, A. Janssens, M. De Paepe, Validation of a coupled heat, vapour and liquid moisture transport model for porous materials implemented in CFD, Building and Environment, Vol. 81, pp. 340-353, 2014.
[24] S. Chemkhi, F. Zagrouba, Water diffusion coefficient in clay material from drying data, Desalination, Vol. 185, No. 1-3, pp. 491-498, 2005.
[25] B. A. Manel, D. Mihoubi, S. Jalila, B. Ahmed, Strain–stress formation during stationary and intermittent drying of deformable media, Drying technology, Vol. 32, No. 10, pp. 1245-1255, 2014.
[26] M. Heydari, K. Khalili, Modeling Enhancement and Simulation of Distortion in Drying Process, Modares Mechanical Engineering, Vol. 15, No. 10, pp. 291-301, 2015.
[27] S. J. Kowalski, A. Rybicki, Rate of Drying and Stresses in the First Period of Drying, Drying Technology, Vol. 18, No. 3, pp. 583-600, 2000.
[28] G. Musielak, Influence of the drying medium parameters on drying induced stresses, Drying Technology, Vol. 18, No. 3, pp. 561-581, 2000.
[29] S. J. Kowalski, J. Banaszak, A. Rybicki, Plasticity in materials exposed to drying, Chemical Engineering Science, Vol. 65, No. 18, pp. 5105-5116, 2010.
[30] G. Caceres, D. Bruneau, W. Jomaa, Two-phase shrinking porous media drying: a modeling approach including liquid pressure gradients effects, Drying Technology, Vol. 25, No. 12, pp. 1927-1934, 2007.
[31] K. Khalili, M. Heydari, M. Khalili, Drying Clay Bricks with Variable Young's Modulus, Procedia Technology, Vol. 12, pp. 382-387, 2014.
[32] S. J. Kowalski, A. Rybicki, The vapour-liquid interface and stresses in dried bodies, in: Drying of Porous Materials, Eds., pp. 43-58: Springer, 2006.
[33] K. Khalili, M. Heydari, Numerical modeling of shrinkage of a ceramic material in drying process, Modares Mechanical Engineering, Vol. 12, No. 2, pp. 58-71, 2012.
[34] I. Hammouda, D. Mihoubi, Modelling of drying induced stress of clay: elastic and viscoelastic behaviours, Mechanics of Time-Dependent Materials, Vol. 18, No. 1, pp. 97-111, 2014.
[35] J. Banaszak, S. J. Kowalski, Drying induced stresses estimated on the base of elastic and viscoelastic models, Chemical Engineering Journal, Vol. 86, No. 1, pp. 139-143, 2002.
[36] D. Mihoubi, A. Bellagi, Modeling of heat and moisture transfers with stress–strain formation during convective air drying of deformable media, Heat and Mass Transfer, pp. 1-9, 2012.
[37] D. Mihoubi, A. Bellagi, Two-dimensional heat and mass transfer during drying of deformable media, Applied Mathematical Modelling, Vol. 32, No. 3, pp. 303-314, 2008.
[38] S. Kowalski, A. Pawłowski, Modeling of kinetics in stationary and intermittent drying, Drying Technology, Vol. 28, No. 8, pp. 1023-1031, 2010.
[39] K. Behrouzi, S. F. Chini, Evaluation of Evaporation Estimation Methods: a Case Study of Karaj Dam Lake, Journal of Computational Applied Mechanics, Vol. 48, No. 1, pp. 137-150, 2017.
[40] W. P. da Silva, L. D. da Silva, V. S. de Oliveira Farias, C. M. D. P. da Silva, Water migration in clay slabs during drying: A three-dimensional numerical approach, Ceramics International, Vol. 39, No. 4, pp. 4017-4030, 2013.
[41] I. Hammouda, K. Jlassi, D. Mihoubi, Changes in the physicomechanical characteristics of a ceramic paste during drying, Comptes Rendus Mécanique, Vol. 343, No. 7, pp. 419-428, 2015.
[42] N. Shokri, D. Or, What determines drying rates at the onset of diffusion controlled stage‐2 evaporation from porous media?, Water Resources Research, Vol. 47, No. 9, 2011.
[43] N. Shokri, P. Lehmann, D. Or, Critical evaluation of enhancement factors for vapor transport through unsaturated porous media, Water resources research, Vol. 45, No. 10, 2009. | ||
|
آمار تعداد مشاهده مقاله: 618 تعداد دریافت فایل اصل مقاله: 622 |
||