scholarly journals G115 Study on Natural Convection in a Vertical Channel of Electronic Equipment : Case of Two Walls with Different Heat Inputs

2007 ◽  
Vol 2007 (0) ◽  
pp. 225-226
Author(s):  
Ryoji IMAI ◽  
Yasushi NISHINO ◽  
Shinji NAKAGAWA ◽  
Masaru ISHIZUKA
Keyword(s):  
Natural Convection ◽  
Vertical Channel ◽  
Electronic Equipment

816 Study on natural convection in a vertical channel of Electronic Equipment

2007 ◽  
Vol 2007.44 (0) ◽  
pp. 323-324
Author(s):  
Ryoji IMAI ◽  
Yasushi NISHINO ◽  
Masaru ISHIZUKA ◽  
Shinji NAKAGAWA
Keyword(s):  
Natural Convection ◽  
Vertical Channel ◽  
Electronic Equipment

1918 Natural Convection Air Cooling in a Vertical Channel of Electronic Equipment

2007 ◽  
Vol 2007.7 (0) ◽  
pp. 203-204
Author(s):  
Yasushi NISHINO ◽  
Ryoji IMAI ◽  
Shinji NAKAGAWA ◽  
Masaru ISHIZUKA
Keyword(s):  
Natural Convection ◽  
Vertical Channel ◽  
Electronic Equipment ◽  
Air Cooling

Turbulent Natural Convection in a Differentially Heated Vertical Channel

2008 ◽  
Author(s):  
Abolfazl Shiri ◽  
William K. George
Keyword(s):  
Boundary Layer ◽  
Natural Convection ◽  
Outer Region ◽  
Vertical Channel ◽  
Constant Heat Flux ◽  
Convection Boundary Layer ◽  
Turbulent Natural Convection ◽  
Scaling Parameters ◽  
The One ◽  
Momentum Integral

The turbulence natural convection boundary layer inside a infinite vertical channel with differentially heated walls is analyzed based on a similarity solution methodology. The differences between mean temperature and velocity profiles in a boundary layer along a vertical flat plate and in a channel flow, make it necessary to introduce new sets of scaling parameters. In the limit as H* → ∞, two distinctive parts are considered: an outer region which dominates the core of the flow and inner constant heat flux region close to the walls. The proper inner scaling velocity is showed to be determined by the outer parameters due to momentum integral. The theory is contrasted with the one suggested by George & Capp (1), the deficiencies of which are identified.

Studies on Natural Convection Induced Flow and Thermal Behavior Inside Electronic Equipment Cabinet Model

2001 ◽  
Author(s):  
Masaru Ishizuka ◽  
Guoyi Peng ◽  
Shinji Hayama
Keyword(s):  
Natural Convection ◽  
Thermal Behavior ◽  
Body Surface ◽  
Stokes Equations ◽  
The Body ◽  
Electronic Equipment ◽  
Navier Stokes ◽  
Surface Boundary ◽  
Navier Stokes Equations ◽  
Induced Flow

Abstract In the present work, an important basic flow phenomena, the natural convection induced flow, is studied numerically. Three-dimensional Navier-Stokes equations along with the temperature equation are solved on the basis of finite difference method. Generalized coordinate system is used so that sufficient grid resolution could be achieved in the body surface boundary layer region. Differential terms with respect to time are approximated by forward differences, diffusions terms are approximated by the implicit Euler form, convection terms in the Navier-Stokes equations are approximated by the third order upwind difference scheme. The heat flux at the body surface of heater is specified. The results of calculation showed a satisfactory agreement with the measured data and led to a good understanding of the overall flow and thermal behavior inside electronic equipment cabinet model which is very difficult, if not impossible, to gather by experiment.

Sign in / Sign up

Export Citation Format

Share Document