Helically coiled pipes are widely used in many industrial and engineering applications
because of their compactness, larger heat transfer area per unit volume and higher …

The understanding of flow regimes in helical coils is essential in the design and operation of
modern heat exchangers and has been studied therefore intensively over the past decades …

In this paper, an experimental study on condensation frictional pressure drop of R-600a
inside smooth and dimpled helical coiled tubes were examined. The experiments were …

Secondary flow significantly changes the flow structure and increases flow resistance. The
pipeline motion further contributes to the evolution of secondary flow. This study aims to …

In this paper, the partial geometric models of helically coiled tube type heat exchanger with
different tube diameters (d= 12, 19, 25 mm), tube pitches (P= 50, 100, 150 mm) and helical …

Heat transfer performance of coiled tube type molten salt steam generator has been
experimentally reported, and the wall temperature distribution, steam generation rate and …

The objective of this work is to study the flow behavior and oil film thickness in the vertical
helical channel to improve the efficient operation of the single screw expander. The volume …

The need to understand the flow behavior and film thickness in the single screw expander is
very crucial since it is known to be a complex system due to the existence of various flow …

Enhancement of heat transfer characteristics in helical condenser coils by modifying the coil
shape has been reported by many researchers. While the influence of different types of …

In this research, the Eulerian multiphase flow model is validated to calculate the two-phase
flow in vertical downward helical pipes. The development of pressure fields and liquid …