Showing papers by "Sreenivas Jayanti published in 1996"
TL;DR: In this article, the effect of sinusoidal and solitary waves on the heat transfer across the film was investigated and it was shown that the overall heat transfer coefficient is determined mainly by conduction through the film, rather than by recirculation, if any, under the waves.
89 citations
TL;DR: In this article, the CFDS-FLOW3D computational fluid dynamics code is used to determine the force exerted on a standing wave by gas flowing over it, and it is found that the drag on the wave is mainly due to the pressure variation around it and that it is a strong function of the channel dimensions.
62 citations
TL;DR: In this paper, a model to determine the film Reynolds number has been developed, and is used to show that the onset of disturbance waves and of ephemeral waves happens at a substrate Reynolds number of about 500.
27 citations
TL;DR: In this paper, the response of turbulent flow to abrupt changes in pipe wall roughness is studied and it is shown that a circumferential flow will not develop near the wall in a pipe with a short patch of circumferentially varying roughness.
10 citations
TL;DR: In this paper, the response of turbulent pipe flow to sudden changes in wall roughness and flow cross-sectional area has been studied experimentally and numerically, and good agreement has been obtained between the measured results and those calculated using the Harwell-FLOW3D computational fluid dynamics (CFD) code.
Abstract: The response of turbulent pipe flow to sudden changes in wall roughness and flow cross-sectional area has been studied experimentally and numerically. Changes typical of those encountered by the gas phase in annular gas-liquid flow have been considered. The results show that the flow field and the pressure field can be significantly distorted at these transitions. Good agreement has been obtained between the measured results and those calculated using the Harwell-FLOW3D computational fluid dynamics (CFD) code.
5 citations