This manuscript describes methods aimed at measuring the local instantaneous convective heat transfer coefficients in a single or two-phase pipe flow. A simple optical method to determine the length and the propagation velocity of an elongated (Taylor) air bubble moving at a constant velocity is also presented.
Fershtman, A., Barnea, D., Shemer, L. Measurements of Local Instantaneous Convective Heat Transfer in a Pipe - Single and Two-phase Flow. J. Vis. Exp. (134), e57437, doi:10.3791/57437 (2018).