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Spout diameter variation in two-dimensional and cylindrical spouted beds: a theoretical models and its verification

✍ Scribed by R.S. Krzywanski; N. Epstein; B.D. Bowen

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
789 KB
Volume
44
Category
Article
ISSN
0009-2509

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✦ Synopsis

Relationships giving spout diameter as a function of height are developed for both twodimensional and cylindrical spouted beds, and tested against experimental data selected from the literature. The required input information includes the average spout diameter and the spout expansion angle. The former can be pi'edicted using available correlations. Expressions for the latter are derived by a stress analysis, based on soil mechanics principles, of the particles in the vicinity of the spout inlet. For most practical circumstances, this rigorous analysis yields expansion angles which are in reasonable agreement with values calculated from a simple formula based solely on the operative bed geometry.

📜 SIMILAR VOLUMES

Spout diameter variation in two-dimensio
Spout diameter variation in two-dimensional and cylindrical spouted beds: a theoretical model and its verification: Chem. Engng Sci.44, 1617-1626.
📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 35 KB

P, in Fig. 1 (p. 1618) should be p,,g, and the isolated g should be deleted. (1 + r:)"" in eq. ( 25) (p. 1621) should be (1 + r:\*)"\*. C, in eq. ( 31) (p. 1621) should be C,H, and +C,(l -C:)"\* should be -C,(l -C:)"'. The last exponent, l/2, in both eq. ( 34) and eq. ( 36) (p. 1621) should be -l/2