Local heat transfer distribution on a smooth flat plate impinged by a slot jet

2011 ◽  
Vol 54 (1-3) ◽  
pp. 727-738 ◽  
Author(s):  
M. Nirmalkumar ◽  
Vadiraj Katti ◽  
S.V. Prabhu
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Local Heat Transfer ◽  
Local Heat

A Summary of Experiments on Local Heat Transfer From the Rear of Bluff Obstacles to a Low Speed Airstream

1964 ◽  
Vol 86 (2) ◽  
pp. 200-202 ◽  
Author(s):  
H. H. Sogin
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Forced Convection ◽  
Angle Of Attack ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Base Surface ◽  
Low Speed ◽  
Air Space ◽  
Plate Strip

The local heat transfer by forced convection from the base surface of a bluff obstacle in a variety of configurations was measured. The data are satisfactorily represented by an equation of the type hLkf=C·U∞ρfLμf2/3 The coefficient C depends upon the configuration and the location. Its value is uniformly 0.20 on the rear of a flat-plate strip at 90-deg angle of attack. It diminishes wherever any device can close the dead air space, or reduce its size.

Heat Transfer Characteristics of an Inclined Impinging Jet on a Curved Surface in Crossflow

2014 ◽  
Vol 136 (8) ◽  
Author(s):  
X. L. Wang ◽  
H. B. Yan ◽  
T. J. Lu ◽  
S. J. Song ◽  
T. Kim
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Flat Plate ◽  
Local Heat Transfer ◽  
Impinging Jet ◽  
Local Heat ◽  
Curved Surface ◽  
Heat Transfer Characteristics ◽  
Potential Core ◽  
Transfer Characteristics

This study reports on heat transfer characteristics on a curved surface subject to an inclined circular impinging jet whose impinging angle varies from a normal position θ = 0 deg to θ = 45 deg at a fixed jet Reynolds number of Rej = 20,000. Three curved surfaces having a diameter ratio (D/Dj) of 5.0, 10.0, and infinity (i.e., a flat plate) were selected, each positioned systematically inside and outside the potential core of jet flow where Dj is the circular jet diameter. Present results clarify similar and dissimilar local heat transfer characteristics on a target surface due to the convexity. The role of the potential core is identified to cause the transitional response of the stagnation heat transfer to the inclination of the circular jet. The inclination and convexity are demonstrated to thicken the boundary layer, reducing the local heat transfer (second peaks) as opposed to the enhanced local heat transfer on a flat plate resulting from the increased local Reynolds number.

An Experimental Investigation of Natural Convection With Vertical Cylinders in Mercury

1974 ◽  
Vol 96 (4) ◽  
pp. 455-458 ◽  
Author(s):  
L. E. Wiles ◽  
J. R. Welty
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Natural Convection ◽  
Flat Plate ◽  
Convection Heat Transfer ◽  
Vertical Cylinder ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Transfer Coefficients ◽  
Flat Plates

An experimental investigation of laminar natural convection heat transfer from a uniformly heated vertical cylinder immersed in an effectively infinite pool of mercury is described. A correlation was developed for the local Nusselt number as a function of local modified Grashof number for each cylinder. A single equation incorporating the diameter-to-length ratio was formulated that satisfied the data for all three cylinders. An expression derived by extrapolation of the results to zero curvature (the flat plate condition) was found to agree favorably with others’ work, both analytical and experimental. The influence of curvature upon the heat transfer was found to be small but significant. It was established that the effective thermal resistance through the boundary layer is less for a cylinder of finite curvature than for a flat plate. Consequently, local heat transfer coefficients for cylinders are larger than those for flat plates operating under identical conditions.

Temperature Distributions in Laminar Flat Plate Shear Flow

1968 ◽  
Vol 90 (1) ◽  
pp. 32-36 ◽  
Author(s):  
A. F. Emery ◽  
K. F. Brettman
Keyword(s):  
Heat Transfer ◽  
Flat Plate ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Transfer Coefficients ◽  
Shearing Flow ◽  
Heat Transfer Coefficients ◽  
Temperature Distributions ◽  
High Shearing ◽  
The Heat Transfer Coefficient

An approximate solution to the heat transfer coefficient on a flat plate in a linear shearing flow is given. It is shown that high shearing rates may significantly increase the local heat transfer coefficients.

Verification and Validation Studies for Laminar Hypersonic Flow Over a Blunted Cone and a Flat Plate

2006 ◽  
Author(s):  
S. Gokaltun ◽  
P. V. Skudarnov ◽  
C. X. Lin ◽  
Hugh Thornburg
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Flat Plate ◽  
Hypersonic Flow ◽  
Surface Pressure ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Numerical Results ◽  
Verification And Validation

In this paper, verification and validation analysis for laminar hypersonic flow fields is presented. The simulations include a Mach 8 flow of calorically perfect gas over a spherically blunted cone and a Mach 14 flow over a flat plate. Numerical results were obtained using the finite volume method on structured grids. The verification of the numerical solutions was performed by calculating the Grid Convergence Index (GCI) for both test cases. A set of three different grids is used to calculate the discretization uncertainty, where each grid was generated by doubling the number of cells in each direction of the coarser grid. The value of GCI allows calculating the observed order of accuracy of the numerical method for local values of surface pressure at various points and the net drag force for the blunted cone case and for the local heat transfer coefficient for the flat plate case. The error band was observed to be 2.4% for the surface pressure in the blunted cone problem and 0.5% for the heat transfer coefficient in the flat plate problem. Finally the numerical results were validated with experimental data using the local surface pressure measurements for the hypersonic cone and the local heat transfer coefficient measurements for the hypersonic flat plate.

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