Numerical Investigation of High-Speed Turbulent Boundary Layers of Dense Gases
Sign Up to like & getrecommendations! Published in 2020 at "Flow, Turbulence and Combustion"
DOI: 10.1007/s10494-020-00133-1
Abstract: High-speed turbulent boundary layers of a dense gas (PP11) and a perfect gas (air) over flat plates are investigated by means of direct numerical simulations and large eddy simulations. The thermodynamic conditions of the incoming… read more here.
Keywords: boundary layers; velocity; gas; number ... See more keywords
Supersonic turbine stator design using dense gas with numerical method
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-017-0828-3
Abstract: In recent years, interest in renewable energy as a substitute for power generation using coal has increased. As a next-generation power system, the Organic Rankine cycle (ORC) system, which requires a multi-stage turbine or a… read more here.
Keywords: supersonic turbine; turbine; dense gas; power ... See more keywords
Quantified dense gas conical diffuser performance under uncertainties by flow characteristic analysis
Sign Up to like & getrecommendations! Published in 2019 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2019.114158
Abstract: Abstract The Organic Rankine Cycle (ORC) has become a leading thermodynamic technique to extract more energy by benefiting from the application of dense gas. As the connecting component to the ORC turbine outlet, dense gas… read more here.
Keywords: gas; gas conical; diffuser; dense gas ... See more keywords
Large-eddy simulation of dense gas dispersion over a simplified urban area
Sign Up to like & getrecommendations! Published in 2017 at "Atmospheric Environment"
DOI: 10.1016/j.atmosenv.2016.12.039
Abstract: Abstract Dispersion of neutral and dense gas over a simplified urban area, comprising four cubes, has been investigated by the means of large-eddy simulations (LES). The results have been compared to wind tunnel experiments and… read more here.
Keywords: gas; area; dispersion; simplified urban ... See more keywords
Liquid hydrogen releases show dense gas behavior
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2019.09.060
Abstract: Abstract The number of maritime initiatives with hydrogen as alternative fuel is increasing. While most of the early projects aim at using compressed hydrogen the use of liquid hydrogen (LH2) is more practical and is… read more here.
Keywords: hydrogen; lh2 releases; gas; liquid hydrogen ... See more keywords
Direct numerical simulations of supersonic turbulent channel flows of dense gases
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.237
Abstract: The influence of dense-gas effects on compressible wall-bounded turbulence is investigated by means of direct numerical simulations of supersonic turbulent channel flows. Results are obtained for PP11, a heavy fluorocarbon representative of dense gases, the… read more here.
Keywords: gas; density; channel; dense gases ... See more keywords
Poiseuille and thermal transpiration flows of a dense gas between two parallel plates
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2023.270
Abstract: Abstract The Poiseuille and thermal transpiration flows of a dense gas between two parallel plates are investigated on the basis of the Enskog kinetic equation under the diffuse reflection boundary condition. In contrast to the… read more here.
Keywords: dense gas; gas; thermal transpiration; poiseuille thermal ... See more keywords
Role of Ambient Turbulence in Dense Gas Dispersion from Confined Urban Regions
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Hydraulic Engineering"
DOI: 10.1061/(asce)hy.1943-7900.0001415
Abstract: AbstractExperimental results are presented for the rate of flushing of a dense fluid from an idealized two-dimensional square urban canyon as a function of the Richardson number of the flow, rangin... read more here.
Keywords: role ambient; ambient turbulence; dense; gas dispersion ... See more keywords
Large-eddy simulations of dense-gas dispersion within a high-Reynolds number turbulent boundary layer
Sign Up to like & getrecommendations! Published in 2017 at "Physics of Fluids"
DOI: 10.1063/1.4999466
Abstract: Large-eddy simulations of flows over a backward-facing step with release of four different gases with increasing densities have been performed. The results have been analysed with particular emphasis on the part of the flow field… read more here.
Keywords: large eddy; eddy simulations; layer; number ... See more keywords
Direct numerical simulations of forced homogeneous isotropic turbulence in a dense gas
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Turbulence"
DOI: 10.1080/14685248.2020.1742916
Abstract: ABSTRACT Direct Numerical Simulations (DNS) of forced homogeneous isotropic turbulence in a dense gas (FC-70), accurately described by a complex EoS, are computed for a turbulent Mach number of 0.8. In a numerical experiment, results… read more here.
Keywords: dense; turbulence; gas; numerical simulations ... See more keywords
Negative dynamical friction on compact objects moving through dense gas
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa013
Abstract: An over-dense wake is created by a gravitating object moving through a gaseous medium, and this wake pulls back on the object and slows it down. This is conventional dynamical friction in a gaseous medium.… read more here.
Keywords: black holes; dynamical friction; friction; negative dynamical ... See more keywords