NUMERICAL MODELING OF HEAT TRANSFER FOR GAS-SOLID FLOW IN VERTICAL PIPES

被引：6

作者：

Azizi, Salar ^{[1
]}

Taheri, Mansour ^{[1
]}

Mowla, Dariush ^{[1
]}

机构：

[1] Shiraz Univ, Dept Chem Engn, Sch Chem & Petr Engn, Shiraz, Iran

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2012年 / 62卷 / 08期

关键词：

FLUIDIZED-BEDS; TURBULENT-FLOW; PARTICLE FLOW; SIMULATION; DUCT; TUBE;

D O I：

10.1080/10407782.2012.707053

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A two-fluid model (TFM) based on the kinetic theory was used to study the heat transfer of gas-solid flows in a vertical pneumatic conveyor. A 2-D, vertical pipe with 1.1m length and 0.017m internal diameter was chosen as the computation domain. Pipeline has 0.86m heat transfer section after a 0.28m developing section. It was found that the voidage has minimum and dimensionless velocities, and temperatures have maximum values in the centerline. A convective heat transfer coefficient decreases along the pipeline, and it was found that the heat transfer coefficient of gas-solid flow is greater than clean gas.

引用

页码：659 / 677

页数：19

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