Numerical Investigation of Transient Heat Conduction through a Thermal Insulation of Temperature Dependant  Thermal Properties

Mishaal Abdulameer Abdulkareem

Article Details

Numerical Investigation of Transient Heat Conduction through a Thermal Insulation of Temperature Dependant Thermal Properties

Authors:

Mishaal Abdulameer Abdulkareem

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.10 Issue 3, pp.78-94

Document Type:

Article

Publication Date:

1/2014

Document Language:

English

Document ID (Org No.):

2001539268

pISSN:

2312-0789

Abstract:

 The two-dimensional transient heat conduction through a thermal insulation of temperature dependent thermal properties is investigated numerically using the FVM. It is assumed that this insulating material is initially at a uniform temperature. Then, it is suddenly subjected at its inner surface with a step change in temperature and subjected at its outer surface with a natural convection boundary condition associated with a periodic change in ambient temperature and heat flux of solar radiation. Two thermal insulation materials were selected. The fully implicit time scheme is selected to represent the time discretization. The arithmetic mean thermal conductivity is chosen to be the value of the approximated thermal conductivity at the interface between adjacent control volumes. A temperature dependent specific heat capacity proposed by a 4th Degree polynomial is fitted. A good agreement is obtained when the predicted results are compared with those obtained from the analytical solution.

Article Details

Numerical Investigation of Transient Heat Conduction through a Thermal Insulation of Temperature Dependant Thermal Properties

Authors: Mishaal Abdulameer Abdulkareem

Publisher: University of Baghdad

Journal: Al-Khwarizmi Engineering Journal Vol.10 Issue 3, pp.78-94

Document Type: Article

Publication Date: 1/2014

Document Language: English

Document ID (Org No.): 2001539268

pISSN: 2312-0789

Issues

Authors:

Mishaal Abdulameer Abdulkareem

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.10 Issue 3, pp.78-94

Document Type:

Article

Publication Date:

1/2014

Document Language:

English

Document ID (Org No.):

2001539268

pISSN:

2312-0789