Results 11 to 20 of about 4,168,877 (128)
GMAW shielding gas flow optimisation by refinement of nozzle geometry [PDF]
, 2013 With an ongoing demand to improve the efficiency of the gas metal arc welding process, steps are being taken to reduce the shielding gas consumption. However, sufficient shielding gas coverage of the weld region is essential for the generation of high ...
S.W. Campbell +5 more
core +4 more sources
A computational fluid dynamic analysis of the effect of weld nozzle geometry changes on shielding gas coverage during gas metal arc welding [PDF]
, 2013 Three geometry changes to the inner bore of a welding nozzle and their effects on weld quality during gas metal arc welding (GMAW) were investigated through the use of computational fluid dynamic (CFD) models and experimental trials. It was shown that an
Campbell, Stuart +3 more
core +4 more sources
A DSMC investigation of gas flows in micro-channels with bends [PDF]
, 2013 Pressure-driven, implicit boundary conditions are implemented in an open source direct simulation Monte Carlo (DSMC) solver, and benchmarked against simple micro-channel flow cases found in the literature.
Reese, Jason M. +3 more
core +4 more sources
Flow Separation in Rocket Nozzles, a Simple Criteria [PDF]
, 2005 Cold and hot flow tests were conducted to investigate the flow separation in rocket nozzles. The results are presented. A separation data base including a wide range of literature data is established to evaluate the influence of propellant combination ...
Ralf Stark, Stark, Ralf
core +1 more source
Systematic study of effect of cross-drafts and nozzle diameter on shield gas coverage [PDF]
, 2013 A shield gas flow rate of 15–20 L min21 is typically specified in metal inert gas welding, but is often adjusted to as high as 36 L min21 by welders in practice. Not only is this overuse of shield gas wasteful, but uncontrolled high gas flows can lead to
Campbell, Stuart +5 more
core +4 more sources
Micro-Nozzle Simulation and Test for an Electrothermal Plasma Thruster [PDF]
, 2018 With an increased demand in Cube Satellite (CubeSat) development for low cost science and exploration missions, a push for the development of micro-propulsion technology has emerged, which seeks to increase CubeSat capabilities for novel mission concepts.
Croteau, Tyler J
core +1 more source
Advanced Functional Materials, EarlyView.An integrated pulmonary mRNA delivery platform combining novel biodegradable syringic acid‐derived ionizable lipids, design‐of‐experiments formulation optimization, and vibrating‐mesh nebulizer engineering enabled stable aerosolization and efficient lung delivery.
Neha Kaushal +21 more
wiley +1 more source
Investigation of Flow Parameters for Titanium Cold Spraying using CFD Simulation [PDF]
, 2010 A comprehensive study of cold gas dynamic spray technology is required for optimising performance and gun design for spraying various materials. Cold spraying technology is a new technique in industry and very limited data is available.
Singh, Tejinder
core
Advancing Human Skin Equivalents: The Crucial Role of Neurovascular Integration
Advanced Healthcare Materials, EarlyView.This review discusses the importance of integrating vascular and peripheral nerve systems into human skin equivalents (HSEs) to better recapitulate native skin physiology. Recent advances in vascularized, innervated, and neurovascularized HSEs are highlighted, together with emerging bioengineering strategies, current challenges, and future ...
Hao Wu +4 more
wiley +1 more source
Experimental Study of Dual Bell Nozzles [PDF]
, 2007 An experimental study was conducted testing Dual-bell nozzles in various conditions at DLR’s cold gas test stand. The stability of the nozzle flow has been verified by measuring the pressure ratio values by flow transition and retransition, to ensure a ...
Nürnberger-Génin, Chloé, Stark, Ralf
core