Development of an inverse heat conduction model and its application to determination of heat transfer coefficient during casting solidification

2014 ◽  
Vol 50 (7) ◽  
pp. 945-955 ◽  
Author(s):  
Liqiang Zhang ◽  
Carl Reilly ◽  
Luoxing Li ◽  
Steve Cockcroft ◽  
Lu Yao
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Conduction ◽  
Transfer Coefficient ◽  
Inverse Heat Conduction ◽  
Conduction Model ◽  
Heat Conduction Model

Determination of heat transfer coefficient in a T-shaped cavity by means of solving the inverse heat conduction problem

2019 ◽  
Vol 30 (4) ◽  
pp. 1725-1742 ◽  
Author(s):  
Andrzej Frąckowiak ◽  
David Spura ◽  
Uwe Gampe ◽  
Michał Ciałkowski
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Conduction ◽  
Transfer Coefficient ◽  
Heat Conduction Problem ◽  
Inverse Heat Conduction Problem ◽  
Arbitrary Distribution ◽  
Inverse Heat Conduction ◽  
Content Type

Purpose T-shaped cavities occur by design in many technical applications. An example of such a stator cavity is the side space between the guide vane carriers and the outer casing of a steam turbine. Thermal conditions inside it have a significant impact on the deformation of the turbine casing. In order to improve its prediction, the purpose of this paper is to provide a methodology to gain better knowledge of the local heat transfer at the cavity boundaries based on experimental results. Design/methodology/approach To determine the heat transfer coefficient distribution inside a model cavity with the help of a scaled generic test rig, an inverse heat conduction problem is posed and a method for solving such type of problems in the form of linear combinations of Trefftz functions is presented. Findings The results of the calculations are compared with another inverse method using first-order gradient optimization technique as well as with estimated values obtained with an analytic two-dimensional thermal network model, and they show an excellent agreement. The calculation procedure is proved to be numerically stable for different degrees of complexity of the sought boundary conditions. Originality/value This paper provides a universal and robust methodology for the fast direct determination of an arbitrary distribution of heat transfer coefficients based on material temperature measurements spread over the confining wall.

Application of Inverse Heat Conduction Problems in the Slab Solidification Process

2013 ◽  
Vol 395-396 ◽  
pp. 1135-1141
Author(s):  
Yang Yu ◽  
Xiao Chuan Luo ◽  
Yuan Wang
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Conduction ◽  
Transfer Coefficient ◽  
Surface Heat ◽  
Cooling Zone ◽  
Inverse Heat Conduction ◽  
Surface Heat Transfer ◽  
Surface Heat Transfer Coefficient ◽  
Inverse Heat Conduction Problems

The surface heat transfer coefficient is obtained by the calculation of water-flowing in the second cooling zone of continuous casting; the parameters of this formula are determined by the engineering experiment methods. This paper adopts a new method-numerical calculation method to obtain these parameters. Firstly, the paper uses the method of solving inverse heat conduction problems to calculate the surface heat flux and the surface heat transfer coefficient. Secondly, by using the least square method, the parameters in the formula between the surface heat transfer coefficient and water-flowing are identified. Finally, a plant steel data is used to do some simulation experiments. The results of this simulation prove this numerical method feasibility and effectiveness.

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