scholarly journals Numerical study of transient three-dimensional heat conduction problem with a moving heat source

2011 ◽  
Vol 15 (1) ◽  
pp. 257-266 ◽  
Author(s):  
Ivana Ivanovic ◽  
Aleksandar Sedmak ◽  
Marko Milos ◽  
Aleksandar Zivkovic ◽  
Mirjana Lazic
Keyword(s):  
Heat Conduction ◽  
Heat Source ◽  
Numerical Solution ◽  
Numerical Study ◽  
Heat Conduction Problem ◽  
Gaussian Function ◽  
Three Dimensional ◽  
Moving Heat Source ◽  
Input Parameters ◽  
Flux Boundary Conditions

A numerical study of transient three-dimensional heat conduction problem with a moving source is presented. For numerical solution Douglas-Gunn alternating direction implicit method is applied and for the moving heat source flux distribution Gaussian function is used. An influence on numerical solution of input parameters figuring in flux boundary conditions is examined. This include parameters appearing in Gaussian function and heat transfer coefficient from free convection boundaries. Sensitivity of cooling time from 800 to 500?C with respect to input parameters is also tested.

Sensitivity Equation for Transient Three-Dimensional Heat Conduction Problem with Moving Heat Source

2010 ◽  
Author(s):  
Ivana Ivanovic ◽  
Aleksandar Sedmak ◽  
Theodore E. Simos ◽  
George Psihoyios ◽  
Ch. Tsitouras
Keyword(s):  
Heat Conduction ◽  
Heat Source ◽  
Heat Conduction Problem ◽  
Three Dimensional ◽  
Moving Heat Source ◽  
Sensitivity Equation

A numerical study of the thermally induced stress distribution in a rotating hollow disc heated by a moving heat source acting on one of the side surfaces

2009 ◽  
Vol 223 (8) ◽  
pp. 1877-1887 ◽  
Author(s):  
M S Genç ◽  
G Özşik ◽  
H Yapicr
Keyword(s):  
Thermal Stress ◽  
Heat Source ◽  
Stress Ratio ◽  
Numerical Study ◽  
Three Dimensional ◽  
Side Surface ◽  
Angular Speed ◽  
Moving Heat Source ◽  
Ambient Conditions ◽  
Wide Range

This study presents the effects of a moving heat source (MHS) on a rotating hollow steel disc heated from its one side surface under stagnant ambient conditions. As the disc rotates around the z-axis with a constant angular speed Ω, the heat source moves along from one radial segment to the next radial segment in the radial direction on the processed surface at the end of each revolution of the disc. Three-dimensional (3D) numerical calculations are performed individually for a wide range of thermal conductivity λ of steel and for different Ωs. In order to obtain the thermal stress per heat flux intensity q0, it is assumed that the thermo-physical properties of the disc do not change with temperature. The maximum effective thermal stress ratio varies in the range of 22–134 °C depending on λ and Ω. While the MHS passes from one radial segment to the next radial segment, it causes an additional steeping of the effective thermal stress. However, when the values of λ and Ω are increased, the maximum effective thermal stress ratio can be reduced by a considerable amount.

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