Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

THE PRESSURE MELTING OF ICE AROUND THE SPHERE AND CYLINDER

Get access (open in a dialog) DOI: 10.1615/IHTC11.1050
pages 181-186

Abstrakt

In this paper the pressure melting of a block of ice around the moving sphere or cylinder bodies is analyzed. The film thickness and the relationship between the force applied on the body and the speed with which the body migrates into the ice block are derived. The method is based on the contact melting theory, and accounts for the coupling between the heat transfer across the water film and the fluid mechanics of the film. By defining the equivalent temperature difference, the results of pressure melting are compared with that of the ΔT -driven melting process for the sphere and cylinder. It is found that the basic differences between them are: (1) the film thickness is x (or Δ) independent and dependent, respectively, for Δp -driven and ΔT -driven melting, (2) the Δp -driven melting speed is 0.806 and 0.769 times as the ΔT -driven melting speed under the same temperature difference between the contact surface of the body and ice block. Finally, the film slenderness and small Reynolds and Peclet number constraints are also discussed.