EXPERIMENTAL INVESTIGATION OF STEADY AND DESTABILIZED FORCED CONVECTION-FILM BOILING ON A HEMISPHERE USING THE ELECTRICAL CAPACITY METHOD

1986 ◽  
Author(s):  
T. R. Fodemski
Keyword(s):  
Experimental Investigation ◽  
Forced Convection ◽  
Film Boiling ◽  
Electrical Capacity ◽  
Capacity Method

Predicting heat extraction due to boiling in the cooling channels during the pressure die casting process

2000 ◽  
Vol 214 (3) ◽  
pp. 465-482 ◽  
Author(s):  
L D Clark ◽  
I Rosindale ◽  
K Davey ◽  
S Hinduja ◽  
P J Dooling
Keyword(s):  
Heat Transfer ◽  
Forced Convection ◽  
Die Casting ◽  
Casting Process ◽  
Nucleate Boiling ◽  
Heat Extraction ◽  
Film Boiling ◽  
Cooling Channels ◽  
Die Casting Process ◽  
Pressure Die Casting

The effect of boiling on the rate of heat extraction by cooling channels employed in pressure die casting dies is investigated. The cooling effect of the channels is simulated using a model that accounts for subcooled nucleate boiling and transitional film boiling as well as forced convection. The boiling model provides a continuous relationship between the rate of heat transfer and temperature, and can be applied to surfaces where forced convection, subcooled nucleate boiling and transitional film boiling are taking place in close proximity. The effects of physical parameters such as flow velocity, degree of subcooling, system pressure and bulk temperature are taken into account. Experimental results are obtained using a rig that simulates the pressure die casting process. The results are compared with the model predictions and are found to show good agreement. Instrumented field tests, on an industrial die casting machine, are also reported. These tests show the beneficial effects of boiling heat transfer in the pressure die casting process, including a 75 per cent increase in the production rate for the test component.

scholarly journals FORCED-CONVECTION DISPERSED-FLOW FILM BOILING.

1969 ◽  
Author(s):  
S.J. Hynek ◽  
W.M. Rohsenow ◽  
A.E. Bergles
Keyword(s):  
Forced Convection ◽  
Film Boiling ◽  
Dispersed Flow ◽  
Flow Film Boiling

An Experimental Investigation of the Film Boiling of Subcooled Water by Gradient Heat Flux Measurement

2019 ◽  
Vol 45 (3) ◽  
pp. 253-255 ◽  
Author(s):  
S. Z. Sapozhnikov ◽  
V. Yu. Mityakov ◽  
A. V. Mityakov ◽  
V. V. Subbotina
Keyword(s):  
Heat Flux ◽  
Experimental Investigation ◽  
Flux Measurement ◽  
Film Boiling ◽  
Heat Flux Measurement ◽  
Subcooled Water
Sign in / Sign up

Export Citation Format

Share Document