Results 61 to 70 of about 22,502 (309)
Advanced Materials Technologies, EarlyView.ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel +4 more
wiley +1 more source
Entropy splitting for high-order numerical simulation of compressible turbulence [PDF]
, 2002 A stable high-order numerical scheme for direct numerical simulation (DNS) of shock-free compressible turbulence is presented. The method is applicable to general geometries. It contains no upwinding, artificial dissipation, or filtering.
Li, Q. +5 more
core +1 more source
Transition from weak to strong turbulence in magnetized plasmas
New Journal of Physics, 2019 The scaling of turbulent heat flux with respect to electrostatic potential is examined in the framework of a reduced (4D) kinetic system describing electrostatic turbulence in magnetized plasmas excited by the ion temperature gradient instability ...
Vasil Bratanov +2 more
doaj +1 more source
Numerical Simulation of Bypass Transition by the Approach of Intermittency Transport Equation
Journal of Fluid Science and Technology, 2009 This paper deals with the development of a numerical approach to predict freestream turbulence-induced (FST-induced) boundary layer bypass transition using an intermittency transport equation.
Most. Nasrin AKHTER +2 more
doaj +1 more source
Advanced Materials Technologies, EarlyView.We introduce an additively manufactured bioreactor with a perfusion flow system and integrated temperature and pH sensors for skeletal muscle tissue biofabrication. The bioreactor's performance was evaluated by assessing the viability, spreading of the myoblast cells in a printed scaffold, and contraction of the isolated murine musculi interossei ...
Lys Sprenger +9 more
wiley +1 more source
Separated boundary layer transition under pressure gradient in the presence of free-stream turbulence [PDF]
, 2019 Large-eddy simulation (LES) has been carried out to investigate the transition process of a separated boundary layer on a flat plate. A streamwise pressure distribution is imposed to mimic the suction surface of a low-pressure turbine blade, and the free-
Zhiyin Yang +3 more
core +1 more source
Length Scale of Free Stream Turbulence and Its Impact on Bypass Transition in a Boundary Layer
Journal of Applied Fluid Mechanics, 2017 An experimental investigation was carried out to study the turbulent flow over a flat plate in a subsonic wind tunnel. The enhanced level of turbulence was generated by five wicker grids with square meshes, and different parameters (diameter of the grid ...
J. Grzelak, Z. Wierciński
doaj +2 more sources
Eos, Transactions American Geophysical Union, 1983 Naturally occurring fluid flows are seldom in a state of fully developed turbulence, except near boundaries. The upper atmosphere and the ocean, in and below the thermocline, are dominated by wave‐like motions. Turbulence when, and where, it occurs is sporadic and short‐lived; it is transitional rather than maintained.
openaire +1 more source
Advanced Materials Technologies, EarlyView.Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee +2 more
wiley +1 more source
Transition to turbulence in the rotating-disk boundary layer
, 2020 The development of the flow over a rotating disk is investigated by direct numerical simulations using both the linearised and fully nonlinear Navier-Stokes equations.
Lingwood, Rebecca, +3 more
core