Resolvent analysis in unbounded flows: role of free-stream modes
Sign Up to like & getrecommendations! Published in 2020 at "Theoretical and Computational Fluid Dynamics"
DOI: 10.1007/s00162-020-00519-x
Abstract: The problem of finding optimal forcing and response for unbounded base flows, exemplified by the Blasius boundary layer, is assessed by means of a locally parallel resolvent analysis. A new analysis of previous results in… read more here.
Keywords: unbounded flows; stream modes; analysis; resolvent analysis ... See more keywords
Inspection of the dynamic properties of laminar separation bubbles: free-stream turbulence intensity effects for different Reynolds numbers
Sign Up to like & getrecommendations! Published in 2017 at "Experiments in Fluids"
DOI: 10.1007/s00348-017-2353-7
Abstract: The effects of free-stream turbulence intensity (FSTI) on the transition process of a pressure-induced laminar separation bubble have been studied for different Reynolds numbers (Re) by means of time-resolved (TR) PIV. Measurements have been performed… read more here.
Keywords: reynolds numbers; stream turbulence; free stream; turbulence intensity ... See more keywords
Effects of free-stream turbulence intensity on transition in a laminar separation bubble formed over an airfoil
Sign Up to like & getrecommendations! Published in 2018 at "Experiments in Fluids"
DOI: 10.1007/s00348-018-2511-6
Abstract: The laminar-to-turbulent transition process in a laminar separation bubble formed over a NACA 0018 airfoil is investigated experimentally. All experiments are performed for an angle of attack of 4$$^{\circ }$$∘, chord Reynolds numbers of 80,000… read more here.
Keywords: separation bubble; free stream; turbulence; turbulence intensity ... See more keywords
Response of a flat plate laminar separation bubble to Reynolds number, free-stream turbulence and adverse pressure gradient variation
Sign Up to like & getrecommendations! Published in 2020 at "Experiments in Fluids"
DOI: 10.1007/s00348-020-02958-y
Abstract: Abstract An extensive data set describing separated flows with different Reynolds numbers (Re), free-stream turbulence intensities (Tu) and adverse pressure gradients (APG) is used for the statistical characterization of laminar separation bubbles (LSBs). Measurements were… read more here.
Keywords: adverse pressure; flat plate; stream turbulence; free stream ... See more keywords
Performance and near-wake characterization of a tidal current turbine in elevated levels of free stream turbulence
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DOI: 10.1016/j.apenergy.2019.113639
Abstract: Tidal turbines are deployed in sites which have elevated levels of free stream turbulence (FST). Accounting for elevated FST on their operation become vital from a design standpoint. Detailed experimental measurements of the dynamic near-wake… read more here.
Keywords: near wake; turbulence; turbine; free stream ... See more keywords
Buongiorno\'s model for fluid flow around a moving thin needle in a flowing nanofluid: A numerical study
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2017.07.004
Abstract: Abstract Present framework addresses the nanofluid flow which occurs over a thin needle moving axially with uniform velocity in the same direction as that of the external free stream. The needle is a thin paraboloid… read more here.
Keywords: thin needle; velocity; free stream; buongiorno model ... See more keywords
Effects of free stream flow turbulence on blowoff characteristics of bluff-body stabilized premixed flames
Sign Up to like & getrecommendations! Published in 2018 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2017.12.002
Abstract: Abstract In this article we report on an experimental investigation of a bluff-body stabilized lean premixed flame subjected to different levels of free stream turbulence intensities (4, 14, 24 and 30%) at conditions approaching blowoff.… read more here.
Keywords: blowoff; flame; turbulence; flame front ... See more keywords
Thermal transition and its evaluation of liquid hydrogen cavitating flow in a wide range of free-stream conditions
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2018.06.096
Abstract: Abstract The objectives of this paper are to (1) validate the present numerical modeling framework for liquid hydrogen cavitating flow, (2) investigate the dynamic evolution of liquid hydrogen cavitating flows in a wide range of… read more here.
Keywords: mode; liquid hydrogen; transition; free stream ... See more keywords
On the effects of the free-stream turbulence on the heat transfer from a sphere
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Heat and Mass Transfer"
DOI: 10.1016/j.ijheatmasstransfer.2020.120579
Abstract: Abstract Free-stream turbulence is present in many engineering applications and is known to affect both bluff body aerodynamics and heat transfer. In this work, its effects on the heat transfer and the near wake behind… read more here.
Keywords: stream turbulence; turbulence; free stream; heat transfer ... See more keywords
Effects of heating and free-stream orientation in two-dimensional forced convective flow of air past a square cylinder
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Thermal Sciences"
DOI: 10.1016/j.ijthermalsci.2016.08.020
Abstract: Abstract A numerical investigation of the combined effects of heating and flow orientation on the forced convective flow of air past a square cylinder is carried out. In order to account for the effects of… read more here.
Keywords: stream; free stream; cylinder; stream orientation ... See more keywords
Thermophoretic MHD free stream flow with variable internal heat generation/absorption and variable liquid characteristics in a permeable medium over a radiative exponentially stretching sheet
Sign Up to like & getrecommendations! Published in 2020 at "Journal of materials research and technology"
DOI: 10.1016/j.jmrt.2020.03.005
Abstract: Abstract The current paper describes the impact of variable viscosity and thermal conductivity over an exponentially stretching sheet in MHD radiating free stream Newtonian fluid with internal heat generation/absorption in a porous medium. The underlying… read more here.
Keywords: internal heat; exponentially stretching; stretching sheet; free stream ... See more keywords