Author: Duane Stewart Duncan
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages :
Book Description
Natural Convection Heat Transfer from a Horizontal Disk in a Cylindrical Enclosure
Author: Duane Stewart Duncan
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages :
Book Description
Natural Convection Heat Transfer from a Horizontal Disk in a Cylindrical Enclosure
Author: Duane Stewart Duncan (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
Book Description
In the report the author discusses natural convection in water from a horizontal mirror finished disk, heated in the center and surrounded by a cylindrical enclosure. The test section was designed to insure a one dimensional heat flux. Measurements were taken with power inputs varying from 25 to 5 watts. Fluid depth had a definite effect on the heat transfer. An apparent maximum value existed at a ratio of enclosure radius to fluid depth of one. Comparison of the data with existing correlations however, was poor which led to the questioning of the validity of the assummed one dimensional heat flux. Use of a finite element computer program demonstrated that two dimensional effects were important. Subsequent modification of the heat transfer coefficient to account for this variation gave a correlation more in agreement with those existing in the literature. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 57
Book Description
In the report the author discusses natural convection in water from a horizontal mirror finished disk, heated in the center and surrounded by a cylindrical enclosure. The test section was designed to insure a one dimensional heat flux. Measurements were taken with power inputs varying from 25 to 5 watts. Fluid depth had a definite effect on the heat transfer. An apparent maximum value existed at a ratio of enclosure radius to fluid depth of one. Comparison of the data with existing correlations however, was poor which led to the questioning of the validity of the assummed one dimensional heat flux. Use of a finite element computer program demonstrated that two dimensional effects were important. Subsequent modification of the heat transfer coefficient to account for this variation gave a correlation more in agreement with those existing in the literature. (Author).
Natural Convection Heat Transfer from a Horizontal Circular Cylinder to a Surrounding Cylindrical Enclosure
Author: Thomas Howard Kuehn
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 602
Book Description
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 602
Book Description
Natural Convection Flow Visualization and Heat Transfer from a Horizontal Circular Disk
Author: Joseph Michael O'Connor
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 60
Book Description
The study of natural convection incorporates a flow visualization procedure, with heat transfer experiments on a circular mirror like surface, in a cylindrical enclosure. A flow visualization procedure using Thymol Blue sodium salt in distilled water was conducted. Photographs are presented which show the cellular flow pattern on the horizontal test surface and the nature of the flow in the plume. Problems applying the flow visualization technique are discussed. Photographs are presented which show the effect of voltage on a laminar natural convection flow in the plume. Transition to turbulence in the plume was observed. Experimental results are presented for the heat transfer from the horizontal circular disk. This data was compared to previously reported results and the agreement was good. (Modified author abstract).
Publisher:
ISBN:
Category : Mechanical engineering
Languages : en
Pages : 60
Book Description
The study of natural convection incorporates a flow visualization procedure, with heat transfer experiments on a circular mirror like surface, in a cylindrical enclosure. A flow visualization procedure using Thymol Blue sodium salt in distilled water was conducted. Photographs are presented which show the cellular flow pattern on the horizontal test surface and the nature of the flow in the plume. Problems applying the flow visualization technique are discussed. Photographs are presented which show the effect of voltage on a laminar natural convection flow in the plume. Transition to turbulence in the plume was observed. Experimental results are presented for the heat transfer from the horizontal circular disk. This data was compared to previously reported results and the agreement was good. (Modified author abstract).
Source Driven Transient Natural Convection in Enclosures
Author: Douglas T. Reindl
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 370
Book Description
Transient Natural Convection Heat Transfer in a Horizontal Cylinder
Author: Howard G. Maahs
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 532
Book Description
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 532
Book Description
Experimental and Numerical Investigation of Natural Convection in Cylindrical Enclosures
Author: Cecil Fernando Hess Silva
Publisher:
ISBN:
Category :
Languages : en
Pages : 358
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 358
Book Description
Natural Convection Heat Transfer Between Arrays of Horizontal Cylinders and Their Enclosure
Author: Robert Allen Weaver
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 150
Book Description
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 150
Book Description
Natural Convection Heat Transfer Between Arrays of Horizontal Cylinders and Their Enclosure
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The natural convection heat transfer between arrays of horizontal, heated cylinders and their isothermal, cooled enclosure was experimentally investigated. Four different cylinder arrays were used: two in-line and two staggered. Four fluids (air, water, 20 cs silicone, and 96% glycerine) were used with Prandtl numbers ranging from 0.705 to 13090.0. There was no significant change in the Nusselt number between isothermal and constant heat flux conditions of the cylinder arrays. The average heat transfer coefficient was most affected by the spacing between cylinders and the total surface area of the cylinder arrays. The enclosure reduced the expected increase in both the average and the local heat transfer coefficients caused by changing the inner body from an in-line arrangement to a staggered arrangement of comparable spacing. An increase in fluid viscosity reduced the influence of the geometric effects.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
The natural convection heat transfer between arrays of horizontal, heated cylinders and their isothermal, cooled enclosure was experimentally investigated. Four different cylinder arrays were used: two in-line and two staggered. Four fluids (air, water, 20 cs silicone, and 96% glycerine) were used with Prandtl numbers ranging from 0.705 to 13090.0. There was no significant change in the Nusselt number between isothermal and constant heat flux conditions of the cylinder arrays. The average heat transfer coefficient was most affected by the spacing between cylinders and the total surface area of the cylinder arrays. The enclosure reduced the expected increase in both the average and the local heat transfer coefficients caused by changing the inner body from an in-line arrangement to a staggered arrangement of comparable spacing. An increase in fluid viscosity reduced the influence of the geometric effects.
Natural Convection from a Horizontal Disk Situated at the Bottom of a Top-vented Enclosure
Author: Shahid Ahmed Siddiqui
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 256
Book Description
Abstract.
Publisher:
ISBN:
Category : Heat
Languages : en
Pages : 256
Book Description
Abstract.