Determination of Local Heat Transfer Coefficients at the Solid-Liquid Interface by Heat Conduction Analysis of the Solidified Region

1985 ◽  
Vol 107 (3) ◽  
pp. 703-706 ◽  
Author(s):  
K. C. Cheng ◽  
P. Sabhapathy
Keyword(s):  
Heat Transfer ◽  
Heat Conduction ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Liquid Interface ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Solid Liquid Interface ◽  
Solid Liquid

A measuring method for quick determination of local heat transfer coefficients in spray water cooling within the range of stable film boiling

1985 ◽  
Vol 56 (5) ◽  
pp. 239-246 ◽  
Author(s):  
Ulrich Reiners ◽  
Rudolf Jeschar ◽  
Reinhard Scholz ◽  
Dietmar Zebrowski ◽  
Wolfgang Reichelt
Keyword(s):  
Heat Transfer ◽  
Local Heat Transfer ◽  
Measuring Method ◽  
Local Heat ◽  
Film Boiling ◽  
Water Cooling ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Quick Determination

A Numerical Evaluation of a Simple Procedure for Using Transient Surface Temperature Measurements to Determine Local Convective Heat Transfer Rates

1999 ◽  
Author(s):  
Patrick H. Oosthuizen ◽  
David Naylor
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Conduction ◽  
Transfer Coefficient ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Inverse Heat Conduction ◽  
Transfer Coefficients ◽  
Transfer Rates ◽  
Heat Transfer Coefficients

Abstract A transient method, based on an inverse heat conduction solution, for experimentally determining the distribution of local heat transfer rates on the surface of a body has been numerically evaluated. The particular interest is in situations in which the heat transfer coefficients are relatively low and in which there are relatively large changes in the heat transfer coefficient over the surface of the body being considered. In the method, a solid body of the shape being investigated, constructed from a low conductivity material, is heated to a uniform temperature and then exposed to a test flow. Using a layer of temperature sensitive crystal placed over the surface of this model or by other means, the time taken for the temperature at a relatively small number of selected points on the surface to reach a selected value is determined. The surface heat flux rate distribution is then found from these measured times using a simple inverse heat conduction method. The feasibility of this method has been evaluated by considering relatively low Reynolds number flow over a square cylinder and natural convective flow over a circular cylinder. Known local heat transfer coefficient distributions for these situation have been applied as boundary conditions in the numerical solution of the transient cooling of a the “experimental” models. These solutions are used to generate “measured” data i.e. to generate simulated experimental data. The inverse heat transfer method has then been used to predict the local heat transfer coefficient distribution over the surface and the predicted and input distributions have been compared. The effect of uncertainties in the experimental measurements on this comparison has then been evaluated using various assumed uncertainty values. The results of the study indicate that the proposed method of measuring local heat transfer coefficients is capable of giving results of good accuracy.

scholarly journals Determination of Local Heat-Transfer Coefficients Around a Circular Cylinder Under an Impinging Air Jet

2008 ◽  
Vol 11 (3) ◽  
pp. 600-612 ◽  
Author(s):  
E.E.M. Olsson ◽  
H. Janestad ◽  
L.M. Ahrné ◽  
A.C. Trägårdh ◽  
R.P. Singh
Keyword(s):  
Heat Transfer ◽  
Circular Cylinder ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Air Jet
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