Results 61 to 70 of about 3,296 (231)
Nuclear Engineering and TechnologyLiquid lead-bismuth eutectic (LBE) alloy exhibits excellent thermo-hydraulic properties and chemical inertness as a coolant for fast reactors. Unlike conventional fluids such as water and air, LBE has a lower Prandtl number (Pr), and its local turbulent ...
YaoDi Li +3 more
doaj +1 more source
Energy Science &Engineering, EarlyView.Flow characteristics and pressure loss mechanisms of a reverse circulation converter in dual‐wall drill pipes are systematically investigated using CFD and response surface methodology. The results reveal the dominant role of inertial dissipation and provide a predictive framework for optimizing converter design and operational parameters. ABSTRACT The
Mingming Geng +8 more
wiley +1 more source
Prandtl number effect on near wall temperature profile in high-Reynolds number channel flows
Nihon Kikai Gakkai ronbunshu, 2014 Prandtl number (Pr) effects on characteristics of the thermal boundary layer were investigated by means of Direct Numerical Simulations (DNS) in high-Reynolds number turbulent channel flows. The molecular Pr conditions were changed from 0.71 to 25.0, and
Shogo SARUWATARI, Yoshinobu YAMAMOTO
doaj +1 more source
Forced Draught Impact on Externally Venting Flames: An Experimental and Numerical Investigation
Fire and Materials, EarlyView.ABSTRACT Wind can significantly influence fire development and spread in urban and forest environments causing fatal consequences for the public, the first responders, and the environment. Wind‐driven fires can have a significant impact on structural fires as wind can increase the fire's intensity, development, and flame spread.
Anoop Subramania Warrier +5 more
wiley +1 more source
Assessment of Turbulence Models in a Hypersonic Cold-Wall Turbulent Boundary Layer
Fluids, 2019 In this study, the ability of standard one- or two-equation turbulence models to predict mean and turbulence profiles, the Reynolds stress, and the turbulent heat flux in hypersonic cold-wall boundary-layer applications is investigated.
Junji Huang +2 more
doaj +1 more source
Large Eddy Simulation of Hypersonic Turbulent Boundary Layers
Fluids, 2021 The recent revival of interest in developing new hypersonic vehicles brings attention to the need for accurate prediction of hypersonic flows by computational methods.
Nadia Kianvashrad, Doyle Knight
doaj +1 more source
Heat Transfer, EarlyView.ABSTRACT Compact plate‐fin heat exchangers (PFHEs) are commonly utilized in diverse industries, including aerospace, automotive, processing, and space. Various fin configurations, such as Plain fins, Wavy fins, Lance and Offset fins (OSFs), Perforated fins, louvered fins, and pin fins, are employed in compact heat exchangers (CHEs).
Chennu Ranganayakulu
wiley +1 more source
EPJ Nuclear Sciences & TechnologiesTurbulent heat transfer is a fundamentally complex physical process that has challenged turbulence modellers for many years. A full differential second-moment closure model provides a solid foundation for the derivation of the simpler Algebraic Heat Flux
Mistry Hemish +2 more
doaj +1 more source
Lubrication Science, EarlyView.ABSTRACT Porous gas bearings (PGBs) enable high‐speed, oil‐free operation in modern rotating machinery. This study develops a coupled thermo‐hydrodynamic (THD) model for a cylindrical porous gas bearing lubricated with four working fluids—air, R‐134a, helium and hydrogen.
S. Bechiri, B. Bouchehit, B. Bou‐Saïd
wiley +1 more source
Unsteady turbulent thermal convection [PDF]
, 1978 Tese (doutorado) - University of ...
Ferreira, Rogerio Tadeu da Silva
core