Model for Sludge Cake Drying Accounting for Developing Cracks

被引：25

作者：

Hsu, Jyh-Ping ^{[1
]}

Tao, Tao ^{[2
]}

Su, Ay ^{[3
]}

Mujumdar, Arun S. ^{[4
]}

Lee, Duu-Jong ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Chem Engn, Taipei 10617, Taiwan

[2] Tsinghua Univ, Dept Thermal Engn, Lab Phase Change & Interfacial Transport Phenomen, Beijing 100084, Peoples R China

[3] Yuan Ze Univ, Dept Mech Engn, Fuel Cell Ctr, Tao Yuan, Taiwan

[4] Natl Univ Singapore, Dept Mech Engn, Singapore 117548, Singapore

来源：

DRYING TECHNOLOGY | 2010年 / 28卷 / 07期

基金：

美国国家科学基金会;

关键词：

Crack; Image analysis; Model; Sludge cake; Structure; X-RAY MICROTOMOGRAPHY; WASTE-WATER SLUDGE; ACTIVATED SLUDGES; SOFT MATERIALS; MOISTURE DISTRIBUTION; IMAGE-ANALYSIS; FLOC; EXPRESSION; SHRINKAGE;

D O I：

10.1080/07373937.2010.490775

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This study analyzed convective drying of wastewater sludge cakes with three-dimensional cake structures probed using an X-ray microcomputerized tomography scanner (micro-CT). Crack development and surface skin layers were utilized in model development. The drying cake had an extremely heterogeneous structure, with detail presented by constructed three-dimensional, tetrahedral volumetric grids. Drying modeling was conducted numerically by solving the conservation equations with assigned boundary conditions at so-constructed complicated volumetric structural model.

引用

页码：922 / 926

页数：5

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