Results 81 to 90 of about 140,524 (311)

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Turbulent boundary layer development over an air cavity

Flow
The turbulent boundary layer (TBL) development over an air cavity is experimentally studied using planar particle image velocimetry. The present flow, representative of those typically encountered in ship air lubrication, resembles the geometrical ...
Abhirath Anand, Lina Nikolaidou, Christian Poelma, Angeliki Laskari   +3 more
doaj   +1 more source

Multi-scaling analysis of turbulent boundary layers over an isothermally heated flat plate with zero pressure gradient. [PDF]

Heliyon, 2023
Shuvo MS, Mahmud MJ, Saha S.
europepmc   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

A Cloud Top Radiative Cooling Model Coupled With CLUBB in the Community Atmosphere Model: Description and Simulation of Low Clouds

Journal of Advances in Modeling Earth Systems, 2019
In this study, a higher‐order closure scheme known as Cloud Layers Unified By Binormals (CLUBB) is coupled with a cloud top radiative cooling scheme (RAD).
Zhun Guo, Minghuai Wang, Vincent E. Larson, Tianjun Zhou   +3 more
doaj   +1 more source

Solid-Fuel Regression Rate for Standard-Flow Hybrid Rocket Motors

Journal of Thermal Science and Technology, 2012
Marxman's diffusion-limited analysis of hybrid rocket combustion has been often used to investigate various combustion problems in hybrid rocket motors.
Takakazu MORITA, Saburo YUASA, Shigeru YAMAGUCHI, Toru SHIMADA   +3 more
doaj   +1 more source

Entropy Generation during Head-On Interaction of Premixed Flames with Inert Walls within Turbulent Boundary Layers. [PDF]

Entropy (Basel), 2022
Ghai SK, Ahmed U, Chakraborty N, Klein M.   +3 more
europepmc   +1 more source

Turbulent boundary layers with secondary flow [PDF]

An experimental analysis of the boundary layer on a plane wall, along which the flow occurs, whose potential flow lines are curved in plane parallel to the wall is discussed. According to the equation frequently applied to boundary layers in a plane flow,
Grushwitz, E.
core   +1 more source

Analytical Model of the Time Developing Turbulent Boundary Layer

, 2007
We present an analytical model for the time-developing turbulent boundary layer (TD-TBL) over a flat plate. The model provides explicit formulae for the temporal behavior of the wall-shear stress and both the temporal and spatial distributions of the ...
A. Ferrante, A. Ferrante, A. Ferrante, A. Ferrante, A. Pomyalov, D. Coles, S. B. Pope, S. Elghobashi, V. S. L’vov, V. S. L’vov   +9 more
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source