Natural Convection in Trapezoidal Enclosure Heated Partially  from Below

Ahmed W. Mustafa; Ihsan Ali Ghani

Article Details

Natural Convection in Trapezoidal Enclosure Heated Partially from Below

Authors:

Ahmed W. Mustafa | Ihsan Ali Ghani

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 1, pp.76-85

Document Type:

Article

Publication Date:

2/2012

Document Language:

English

Document ID (Org No.):

2001539184

pISSN:

2312-0789

Keywords:

Abstract:

 Natural convection in a trapezoidal enclosure with partial heating from below and symmetrical cooling from the sides has been investigated numerically. The heating is simulated by a centrally located heat source on the bottom wall, and four different values of the dimensionless heat source length, 1/5, 2/5, 3/5, 4/5 are considered. The laminar flow field is analyzed numerically by solving the steady, two-dimensional incompressible Navier-Stokes and energy equations. The Cartesian velocity components and pressure on a collocated (non-staggered) grid are used as dependent variables in the momentum equations  discretized by finite volume method; body fitted coordinates are used to represent the trapezoidal enclosure, and grid generation technique based on elliptic partial differential equations is employed. SIMPLE algorithm is used to adjust the velocity field to satisfy the conservation of mass. The range of Rayleigh number is (103≤ Ra ≤105) and Prandtl number is 0.7. The results show that the average Nusselt number increases with the increases of the source length.

Article Details

Natural Convection in Trapezoidal Enclosure Heated Partially from Below

Authors:

Ahmed W. Mustafa | Ihsan Ali Ghani

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 1, pp.76-85

Document Type:

Article

Publication Date:

2/2012

Document Language:

English

Document ID (Org No.):

2001539184

pISSN:

2312-0789

Natural Convection

Trapezoidal Enclosure

Finite Volume

Issues

Article Details

Natural Convection in Trapezoidal Enclosure Heated Partially from Below

Authors: Ahmed W. Mustafa | Ihsan Ali Ghani

Publisher: University of Baghdad

Journal: Al-Khwarizmi Engineering Journal Vol.8 Issue 1, pp.76-85

Document Type: Article

Publication Date: 2/2012

Document Language: English

Document ID (Org No.): 2001539184

pISSN: 2312-0789

Natural Convection

Trapezoidal Enclosure

Finite Volume

Issues

Authors:

Ahmed W. Mustafa | Ihsan Ali Ghani

Publisher:

University of Baghdad

Journal:

Al-Khwarizmi Engineering Journal Vol.8 Issue 1, pp.76-85

Document Type:

Article

Publication Date:

2/2012

Document Language:

English

Document ID (Org No.):

2001539184

pISSN:

2312-0789