Heat Transfer Analysis of Blast Furnace Tuyere through CFD Simulation

In recent years, conjugate heat transfer (CHT) computational fluid dynamics (CFD) simulation in turbomachinery played an important role in predicting metal temperature. Most of research papers of CHT CFD simulation were emphasized on the mixing plane method. In this paper the ANSYS CFX 14.0 CHT simulation using the frozen rotor approach is employed to predict the blade temperatures. The frozen rotor included five time instances in which the stator-rotor wake influence could be captured. In this study, the temperature predictions using the frozen rotor approach were compared to the mixing plane predictions and Silicon Carbide (SiC) chip measurements on three different radial spans. The frozen rotor results predicted the minimum and maximum temperatures that bounded the SiC chip data. Compared to the mixing plane predictions, the frozen rotor approach results were similar within 8 K at the mid-span. However, the frozen rotor approach provided more insight information and detailed guidance for model calibration. Finally several future works were suggested to continue striving for high performance gas turbines.

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Heat transfer analysis of blast furnace stave

International Journal of Heat and Mass Transfer ◽

10.1016/j.ijheatmasstransfer.2007.09.030 ◽

2008 ◽

Vol 51 (11-12) ◽

pp. 2824-2833 ◽

Cited By ~ 21

Author(s):

Lijun Wu ◽

Xun Xu ◽

Weiguo Zhou ◽

Yunlong Su ◽

Xiaojing Li

Keyword(s):

Heat Transfer ◽

Blast Furnace ◽

Heat Transfer Analysis

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Heat Transfer Analysis in Thermoacoustic Regenerators Using CFD Simulation

Volume 2: Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Computational Heat Transfer ◽

10.1115/ht2009-88215 ◽

2009 ◽

Cited By ~ 2

Author(s):

Florian Zink ◽

Jeffrey S. Vipperman ◽

Laura A. Schaefer

Keyword(s):

Heat Transfer ◽

Energy Transfer ◽

Total Energy ◽

Cfd Simulation ◽

Heat Transfer Analysis ◽

Thermoacoustic Engine ◽

Flow Variables

This work is a continuation of previously published work, which focused on a working simulation of a thermoacoustic engine using Fluent [1]. The present work utilizes the developed model to investigate four different resonator geometries and the effect of curvature on the pressure, velocity and temperature over the course of one period of oscillations. It is shown that all relevant flow variables are adversely affected, as the respective amplitudes decrease. As a cumulative parameter, the total energy transfer between the walls of the thermoacoustic stack and the working gas is also discussed. It is concluded that the energy transfer also decreases as a result of increasing curvature.

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Heat Transfer Analysis in a Blast Furnace Tuyere Nose

Heat Transfer: Volume 3 ◽

10.1115/ht2005-72599 ◽

2005 ◽

Author(s):

David Roldan ◽

Clifford Tetrault ◽

Yongfu Zhao ◽

Mark Atkinson ◽

Chenn Q. Zhou

Keyword(s):

Heat Transfer ◽

Blast Furnace ◽

Radiation Heat Transfer ◽

Cooling Water ◽

Chemical Reactor ◽

Operating Conditions ◽

Heat Transfer Analysis ◽

Large Area ◽

Fuel Gas ◽

Hot Air

The Blast furnace process is a counter current moving bed chemical reactor to reduce iron oxides to iron for iron/steel making. In the process, tuyeres are used to introduce hot air (blast) and fuel (gas or pulverized coal) into the furnace for combustion. The nose of a tuyere, composed of copper material, that is exposed to a high temperature environment and a cooling water pipe is embedded to prevent melting of the material. In this work, heat transfer and temperature distributions have been analyzed using the computational fluid dynamics commercial software, FLUENT®. The computations have included the cooling water flow and conjugate heat transfer in the tuyere nose. Both convection and radiation heat transfer on the surfaces are included. Different geometry and operating conditions were considered. The results have indicated that insufficient cooling in a large area between the nose inlet and outlet pipe can cause failures of the tuyere nose.

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