Tomographic PIV measurements and RANS simulations of secondary flows inside a horizontally positioned helically coiled tube
Sign Up to like & getrecommendations! Published in 2020 at "Experiments in Fluids"
DOI: 10.1007/s00348-020-02950-6
Abstract: Abstract Helically coiled tubes are widely used in industry to enhance heat and mass transfer in the laminar flow regime, due to their secondary flow pattern. In this study, tomographic particle image velocimetry (tomo-PIV) is… read more here.
Keywords: velocity field; velocity; coiled tube; helically coiled ... See more keywords
Mixing characterization in different helically coiled configurations by laser-induced fluorescence
Sign Up to like & getrecommendations! Published in 2020 at "Experiments in Fluids"
DOI: 10.1007/s00348-020-03035-0
Abstract: Flow Mixing of two miscible liquids has been characterized experimentally in three different helically coiled reactor configurations of two different lengths in the laminar flow regime at Re = 50…1000. A straight helical coil, a coiled flow… read more here.
Keywords: fluorescence; coiled flow; induced fluorescence; different helically ... See more keywords
Experimental investigation on heat transfer enhancement for a ferrofluid in a helically coiled pipe under constant magnetic field
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Thermal Analysis and Calorimetry"
DOI: 10.1007/s10973-018-7478-2
Abstract: This paper experimentally investigates the effects of constant magnetic field on the average Nusselt number variation when the water-based ferrofluid with 1 mass% Fe3O4 nanoparticles flows through a helically coiled pipe with constant wall temperature in… read more here.
Keywords: constant magnetic; field; heat transfer; magnetic field ... See more keywords
Hydrodynamic characterization and flocculation process in helically coiled tube flocculators: an evaluation through streamlines
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Environmental Science and Technology"
DOI: 10.1007/s13762-017-1341-z
Abstract: This paper presents a hydrodynamic characterization of helically coiled tube flocculators (HCTFs) through streamline analysis and an efficiency evaluation of the flocculation process in these units. Physical experiment and CFD modeling allowed to relate flocculation… read more here.
Keywords: hydrodynamic characterization; coiled tube; helically coiled; flocculation ... See more keywords
An assessment of heat transfer models of water flow in helically coiled tubes based on selected experimental datasets
Sign Up to like & getrecommendations! Published in 2017 at "Annals of Nuclear Energy"
DOI: 10.1016/j.anucene.2017.07.015
Abstract: Abstract This paper presents an assessment of the heat transfer models under different heat transfer modes for water flow in helically coiled tubes based on the compiled datasets from the reviewed literatures. For single phase… read more here.
Keywords: coiled tubes; water flow; heat transfer; heat ... See more keywords
Contrastive study of flow and heat transfer characteristics in a helically coiled tube under uniform heating and one-side heating
Sign Up to like & getrecommendations! Published in 2017 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2016.11.168
Abstract: One-side heated helically coiled tubes, which are generally applied in various industrial applications such as the water cooled wall in power plant boilers though, have not been thoroughly studied. To investigate the flow and heat… read more here.
Keywords: one side; side heating; side; helically coiled ... See more keywords
Numerical investigation of vertical helically coiled tube heat exchangers thermal performance
Sign Up to like & getrecommendations! Published in 2018 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2018.02.061
Abstract: Abstract The purpose of the present study is thermal performance assessment of vertical helically coiled tube heat exchangers, at various shell-side mass flow rates, various coil-to-tube diameter ratios, and different dimensionless coil pitches. A particular… read more here.
Keywords: thermal performance; tube; vertical helically; heat ... See more keywords
Flow regime identification for upward two-phase flow in helically coiled tubes
Sign Up to like & getrecommendations! Published in 2017 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2016.09.100
Abstract: Abstract Helically coiled tubes have excellent compactness, heat transfer efficiency, thermal stress adaptability and two-phase flow stability. The increasing application of two-phase flow in helically coiled tube devices necessitates a deep knowledge of phase distribution… read more here.
Keywords: coiled tubes; two phase; phase flow; helically coiled ... See more keywords
Forecasting a bubbly-intermittent flow regime transition in helically coiled tubes
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Engineering Research and Design"
DOI: 10.1016/j.cherd.2021.09.002
Abstract: Abstract Simulations of gas–liquid turbulent flows in helically coiled tubes are conducted by a two-fluid hydrodynamic model coupled with the population balance equation. A model of bubble breakup in a turbulent flow, recently developed by… read more here.
Keywords: bubbly intermittent; flow regime; coiled tubes; intermittent flow ... See more keywords
Thermal performance of a novel helically coiled oscillating heat pipe (HCOHP) for isothermal adsorption. An experimental study
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2018.02.014
Abstract: Helically Coiled Oscillating Heat Pipes (HCOHPs) have been designed and tested under laboratory conditions to investigate their potential to achieve isothermal adsorption when integrated with a cylindrical solid desiccant packed bed system. The HCOHPs fabricated… read more here.
Keywords: isothermal adsorption; performance; heat; oscillating heat ... See more keywords
Experimental investigation of the heat transfer coefficient and pressure drop of R1234yf during flow condensation in helically coiled tubes
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2020.106516
Abstract: Abstract The condensing flow of R1234yf in a smooth horizontal helically coiled tube is studied experimentally to achieve the heat transfer coefficient and frictional pressure gradient. The helical coil diameter is 95.3 mm with a constant… read more here.
Keywords: transfer coefficient; heat transfer; helically coiled; heat ... See more keywords