Assessment of flow and heat transfer characteristics for proposed solid density distributions in dilute laminar slurry upflows through a concentric annulus

Date

2003-09-01

Author

Eraslan, Ahmet Nedim

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

287
views

0
downloads

A computational model is developed to predict the hydrodynamic and heat transfer characteristics of dilute liquid-solid laminar upflows through a concentric annulus. The dilute slurry is treated as a single phase Newtonian fluid of locally variable physical and thermal properties. Available experimental data of radial solid density distributions in dilute water-feldspar annular upflows is used in the model. Various important characteristics of laminar slurry flows were successfully predicted. It was also shown mathematically that in the limiting case of zero average solid loading, the solution reduces to that of the single phase. The radial location of maximum slurry density in the annular gap was found to be an important factor in determining both the flow and heat transfer behavior of the present system; also, the higher heat transfer enhancement ratios were predicted at the lower slurry Reynolds numbers.

Subject Keywords

Industrial and Manufacturing Engineering, Applied Mathematics, General Chemistry, General Chemical Engineering

URI

https://hdl.handle.net/11511/35912

Journal

CHEMICAL ENGINEERING SCIENCE

DOI

https://doi.org/10.1016/s0009-2509(03)00284-7

Collections

Department of Engineering Sciences, Article

Suggestions

OpenMETU
Core

EVALUATION OF SECOND VIRIAL COEFFICIENTS FROM SATURATION DATA Orbey, H.; Orbey, N. (Informa UK Limited, 1989-3) A data reduction technique is introduced for the evaluation of second virial coefficients of gases at subcritical temperatures. The method makes use of the vapor-liquid equilibrium data, i.e., temperature, saturation pressure, liquid and vapor molar volumes and can be used to obtain second virial coefficients of a wide variety of fluids including polar, associating and quantum gases. The calculated second virial coefficients are in good agreement with their counterparts from literature, which are obtained f...
Analysis of the electrofiltration mechanism based on multiphase filtration theory Genc, A; Tosun, I (Informa UK Limited, 2004-01-01) A mathematical model based on multiphase filtration theory is developed to describe the electrofiltration process. The model takes both electrophoretic and electroosmotic effects into account. The electrophoretic migration velocity of solid particles is predicted from the model using the filtrate volume time data obtained from electrofiltration experiments.
An experimental study of residual fiber strains in Ti-15-3 continuous fiber composites Pickard, S.M.; Miracle, D.B.; Majumdar, B.S.; Kendig, K.L.; Rothenflue, L.; Çöker, Demirkan (Elsevier BV, 1995-01-01) A simplified experimental technique to determine the axial fiber residual strain in continuously-reinforced metal matrix composites is described. The residual fiber strains in two Ti-15V-3Cr-3Al-3Sn/SiC metal matrix composites have been measured with this technique. Residual fiber strains on the order of 0.2% are measured in the as-processed condition, and the residual stresses approach zero after testing the composite in tension to failure at room temperature. A conceptual description of the effect of tens...
Detecting stability of conical spouted beds based on information entropy theory Savari, Chiya; Sotudeh-Gharebagh, Rahmat; Külah, Görkem; KÖKSAL, MURAT; Mostoufi, Navid (Elsevier BV, 2019-02-01) Effects of particle size, particle density, gas inlet diameter and static bed height on the stability of operation in conical spouted beds were investigated through analyses of information entropy of pressure fluctuations. In this respect, the maximum information entropy of pressure fluctuations was used as a stability criterion. The results showed that stability of the bed increases with an increase in the maximum entropy. The maximum information entropy of pressure fluctuations increases with increasing p...
DETERMINATION OF MOISTURE DIFFUSIVITY AND BEHAVIOR OF TOMATO CONCENTRATE DROPLETS DURING DRYING IN AIR KARATAS, S; ESIN, A (Informa UK Limited, 1994-01-01) The drying mechanism and diffusion coefficient of water in spherical droplets (1.73 - 2.08 mm diameter) of tomato concentrates were successfully interpreted and modelled by using Fick's law. Solids content of the initial concentrate (5-15% w/w), and drying temperature (60-degrees - 100-degrees-C) were varied but the drying air was kept at constant velocity and humidity.

Citation Formats

A. N. Eraslan, “Assessment of flow and heat transfer characteristics for proposed solid density distributions in dilute laminar slurry upflows through a concentric annulus,” CHEMICAL ENGINEERING SCIENCE, pp. 4055–4069, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35912.