Boiling heat transfer measurements on a tube designed to yield the peripheral variation of heat transfer coefficient without interfering with the nucleation site density are presented. A variation of up to 25% around the tube is found with a maximum at the base. High speed cine photography was used to estimate the variation of mean bubble layer thickness and mean velocities with angle. An iterative heat balance around the periphery indicated a voidage decrease from about unity at the base to 0.3-0.6 at 90°. © 1983.
|Number of pages||4|
|Journal||International Journal of Heat and Fluid Flow|
|Publication status||Published - Sep 1983|
- heat transfer
- two-phase flow