Combined convection and wall conduction effects in laminar pipe flow: numerical predictions and experimental validation under uniform wall heating

1995 ◽  
Vol 30 (6) ◽  
pp. 401-409 ◽  
Author(s):  
S. Piva ◽  
G. S. Barozzi ◽  
M. W. Collins
Keyword(s):  
Pipe Flow ◽  
Experimental Validation ◽  
Numerical Predictions ◽  
Wall Heating ◽  
Combined Convection ◽  
Uniform Wall ◽  
Laminar Pipe Flow

Skin Friction in Unsteady Laminar Pipe Flow

1976 ◽  
Vol 102 (1) ◽  
pp. 41-56
Author(s):  
Mario F. Letelier S. ◽  
Hans J. Leutheusser
Keyword(s):  
Skin Friction ◽  
Pipe Flow ◽  
Laminar Pipe Flow

The Effect of the Earth’s Rotation on Laminar Flow in Pipes

1956 ◽  
Vol 23 (1) ◽  
pp. 123-127
Author(s):  
G. S. Benton
Keyword(s):  
Laminar Flow ◽  
Secondary Flow ◽  
Cross Section ◽  
Pipe Flow ◽  
Earth’S Rotation ◽  
Laboratory Studies ◽  
Earth's Rotation ◽  
Parabolic Profile ◽  
Set Up ◽  
Laminar Pipe Flow

Abstract The theory of laminar pipe flow has been developed, retaining the effect of the earth’s rotation. A secondary flow is set up in the pipe cross section which results in distortion of the usual parabolic profile. The distortion may be significant in pipes of moderate diameter. Laboratory studies tend to substantiate these conclusions.

Transition from Turbulent to Laminar Pipe Flow

1962 ◽  
Vol 5 (3) ◽  
pp. 280 ◽  
Author(s):  
Merwin Sibulkin
Keyword(s):  
Pipe Flow ◽  
Laminar Pipe Flow

Simultaneous Wall and Fluid Axial Conduction in Laminar Pipe-Flow Heat Transfer

1980 ◽  
Vol 102 (1) ◽  
pp. 58-63 ◽  
Author(s):  
M. Faghri ◽  
E. M. Sparrow
Keyword(s):  
Heat Transfer ◽  
Pipe Flow ◽  
Numerical Solutions ◽  
Transfer Problem ◽  
Upstream Region ◽  
Heated Region ◽  
Axial Conduction ◽  
Conductance Parameter ◽  
Flow Heat ◽  
Laminar Pipe Flow

Consideration is given to a laminar pipe flow in which the upstream portion of the wall is externally insulated while the downstream portion of the wall is uniformly heated. An analysis of the problem is performed whose special feature is the accounting of axial conduction in both the tube wall and in the fluid. This conjugate heat transfer problem is governed by two dimensionless groups—a wall conductance parameter and the Peclet number, the latter being assigned values from 5 to 50. From numerical solutions, it was found that axial conduction in the wall can carry substantial amounts of heat upstream into the non directly heated portion of the tube. This results in a preheating of both the wall and the fluid in the upstream region, with the zone of preheating extending back as far as twenty radii. The preheating effect is carried downstream with the fluid, raising temperatures all along the tube. The local Nusselt number exhibits fully developed values in the upstream (non directly heated) region as well as in the downstream (directly heated) region. Of the two effects, wall axial conduction can readily overwhelm fluid axial conduction.

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