TY - JOUR
T1 - A theoretical correction of the ouchiyama and tanaka formula for predicting average porosity of packed beds consisting of nonuniform spheres
AU - Song, M.
AU - Chuang, Karl T.
AU - Nandakumar, K.
PY - 1998
Y1 - 1998
N2 - To predict the overall average porosity of a packing of unequal spheres, Ouchiyama and Tanaka (Ind. Eng. Chem. Fundam. 1981, 20, 66.) established a simple packing model and derived an analytical formula. In this model two uniformity assumptions were introduced, which lead to systematic errors in the model, making the prediction of the average porosity higher or the prediction of the packing density lower than experimental data. This paper proposes a theoretical correction for this model. For binary packings of spheres, the correction parameter is fixed. The prediction by our correction is in excellent agreement with experimental data for a large range of ε̄0, the porosity of a packing of equal spheres, and k, the ratio of the smaller to the larger diameter of spheres.
AB - To predict the overall average porosity of a packing of unequal spheres, Ouchiyama and Tanaka (Ind. Eng. Chem. Fundam. 1981, 20, 66.) established a simple packing model and derived an analytical formula. In this model two uniformity assumptions were introduced, which lead to systematic errors in the model, making the prediction of the average porosity higher or the prediction of the packing density lower than experimental data. This paper proposes a theoretical correction for this model. For binary packings of spheres, the correction parameter is fixed. The prediction by our correction is in excellent agreement with experimental data for a large range of ε̄0, the porosity of a packing of equal spheres, and k, the ratio of the smaller to the larger diameter of spheres.
UR - http://www.scopus.com/inward/record.url?scp=0032129292&partnerID=8YFLogxK
U2 - 10.1021/ie980036o
DO - 10.1021/ie980036o
M3 - 文章
AN - SCOPUS:0032129292
SN - 0888-5885
VL - 37
SP - 3490
EP - 3496
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 8
ER -