Numerical generation of a fixed bed structure

• Autorzy: Marek M.
• Języki publikacji: EN

Abstrakty

EN

A numerical algorithm is presented for the filling process of a cylindrical column with equilateral cylinders. The process is based on simplified mechanics – the elements are added one by one until the mechanical equilibrium is reached. The final structure is examined with respect to the global and local porosity distribution. Oscillating radial porosity profile is obtained in accordance with experimental data.

Słowa kluczowe

EN

fixed bed; porosity; structure; numerical modelling

PL

porowatość; struktura; modelowanie numeryczne

• Wydawca: Komitet Inżynierii Chemicznej i Procesowej Polskiej Akademii Nauk
• Czasopismo: Chemical and Process Engineering
• Rocznik: 2013
• Tom: Vol. 34, nr 3
• Strony: 347--359
• Opis fizyczny: Bibliogr. 20 poz., rys., tab.

Twórcy

autor

Marek M.

• Częstochowa University of Technology, Institute of Thermal Machinery, al. Armii Krajowej 21, 42-200 Częstochowa, Poland

Bibliografia

• 1. Abreu C.R.A, Tavares F.W., Castier M., 2003. Influence of particle shape on the packing and on the segregation of spherocylinders via Monte Carlo simulations. Powder Technol., 134, 167-180. DOI: 10.1016/S00325910(03)00151-7.
• 2. Benyahia F., 1996. On the global and local structural properties of packed beds on nonequilatelar cylindrical particles. Particul. Sci. Technol., 14, 221-237. DOI: 10.1080/02726359608906697.
• 3. Caulkin R., Ahmad A., Fairweather M., Jia X., Williams R. A., 2009. Digital predictions of complex cylinder packed columns. Comput. Chem. Eng., 33, 10-21. DOI: 10.1016/j.compchemeng.2008.06.001.
• 4. Jia X., Williams R. A., 2001. A packing algorithm for particles of arbitrary shapes. Powder Technol., 120, 175-186. DOI: 10.1016/S0032-5910(01)00268-6.
• 5. Giese M., Rottschafer K., Vortmeyer D., 1998. Measured and modeled superficial flow profiles in packed beds with liquid flow. AIChE J., 44, 484-490. DOI: 10.1002/aic.690440225.
• 6. Guo Y., Wassgren C., Ketterhagen W., Hancock B., Curtis J., 2012. Some computational considerations associated with discrete element modeling of cylindrical particles. Powder Technol., 228, 193-198. DOI: 10.1016/j.powtec.2012.05.015.
• 7. Kodam M., Bharadwaj R., Curtis J., Hancock B., Wassgren C. A., 2010. Cylindrical object contact detection for use in discrete element method simulations. Part I – Contact detection algorithms. Chem. Eng. Sci., 65, 58522862. DOI: 10.1016/j.ces.2010.08.006.
• 8. Matuttis H.G., Luding S., Herrmann H.J, 2000. Discrete element simulations of dense packings and heaps made of spherical and non-spherical particles. Powder Technol., 109, 278-292. DOI: 10.1016/S0032-5910(99)00243-0.
• 9. Mueller G.E., 2005. Numerically packing spheres in cylinders. Powder Technol., 159, 105-110. DOI:
• 10.1016/j.powtec.2005.06.002.
• 10. Mueller G.E., 1992. Radial void fraction distributions in randomly packed fixed beds of uniformly sized spheres in cylindrical containers. Powder Technol., 72, 269-275. DOI: 10.1016/0032-5910(92)80045-X.
• 11. Nandakumar K., Yiqiang S., Chuang K.T., 1999. Predicting geometrical properties of random packed beds from computer simulation. AIChE J., 45, 2286-2297. DOI: 10.1002/aic.690451104.
• 12. Nolan G.T., Kavanagh P.E., 1995. Random packing of nonspherical particles. Powder Technol., 84, 199-205. DOI: 10.1016/0032-5910(95)98237-S.
• 13. Ritvanen J., Jalali P., 2008. On near-wall effects in hard disk packing between two concentric cylinders. Physica A., 387, 5381–5386. DOI: 10.1016/j.physa.2008.05.035.
• 14. Roskilly S.J., Colbourn E.A., Alli O., Williams D., Paul K. A., Welfare E.H., Trusty P.A., 2010. Investigating the effect of shape on particle segregation using a Monte Carlo simulation. Powder Technol., 203, 211-222. DOI: 10.1016/j.powtec.2010.05.011.
• 15. Salvat W.I., Mariani N.J., Baretto G.F., Martinez O.M., 2005. An algorithm to simulate packing structure in cylindrical containers. Catal. Today., 107, 513-519. DOI: 10.1016/j.cattod.2005.07.108. Siiria S., Yliruusi J., 2007. Particle packing simulations based on Newtonian mechanics. Powder Technol., 174, 82-92. DOI: 10.1016/j.powtec.2007.01.001.
• 16. Theuerkauf J., Witt P., Alli O., Schwesig D., 2006. Analysis of particle porosity distribution in fixed beds using the discrete element method. Powder Technol., 165, 92-99. DOI: 10.1016/j.powtec.2006.03.022.
• 17. Toit C.G., 2008. Radial variation in porosity in annular packed beds. Nucl. Eng. Des., 238, 3073-3079. DOI: 10.1016/j.nucengdes.2007.12.018.
• 18. Wang Z., Afacan A., Nandakumar K., Chuang K.T., 2001. Porosity distribution in random packed columns by gamma ray tomography. Chem. Eng. Process., 40, 209-219. DOI: 10.1016/S0255-2701(00)00108-2.
• 19. Zhang W., Thompson K., Reed A.H., Beenken L., 2006. Relationship between packing structure and porosity in fixed beds of equilateral cylindrical elements. Chem. Eng. Sci., 61, 8060-8074. DOI: 10.1016/j.ces.2006.09.036.
• 20. Zhao J., Li S., Lu P., Meng L., Li T., Zhu H., Shape influences on the packing density of frustums. Powder Technol. 2011, 214, 500-505. DOI: 10.1016/j.powtec.2011.09.013.