Results 81 to 90 of about 2,517,351 (286)

CFD analysis of the internal hydraulic mechanism and validation of the measurement principle of a slit-type velocimeter

open access: yesDiscover Water
Low-cost, robust multipoint velocity monitoring is essential for advancing watershed flood-management strategies. This study aims to validate the measurement principle of a low-cost, slit-type velocimeter by examining its internal physical mechanisms ...
Akito Ouchi   +2 more
doaj   +1 more source

Computational Analysis on the Performance of Centrifugal Compressor with Tapered Wall and Rotating Tapered Wall Vaneless Diffuser

open access: yesJournal of Applied Fluid Mechanics, 2021
Computational analysis is performed on a centrifugal compressor fitted with tapered vaneless diffuser in order to increase the rate of diffusion. The main parameter involved in the present study is the wall taper angle of the diffuser, which is varied ...
P. Niveditha, B. V. S. S. S Prasad
doaj  

Evaluation of the aerothermodynamic field produced by a pseudospheric body of mercury type at M = 22.6 flying in air in thermodynamic equilibrium

open access: yesAnnals of Geophysics, 1963
Tlie differential equations valid after tlie shock are first<br />given in curvilinear coordinates; the cbosen unknowns are the two velocity<br />components and the entropy and enthalpy.
S. ANGELUCCI, D. CUNSOLO
doaj   +1 more source

Deciphering Structure‐Bubble‐Mass Transfer Relationships in Water Electrolysis Through Electrode Morphology Regulation

open access: yesAdvanced Science, EarlyView.
Electrode morphology is shown to govern oxygen‐bubble dynamics and interfacial mass transfer during water electrolysis. Positive‐curvature nanoneedles promote rapid release of small bubbles, sustain electrolyte renewal, and minimize mass‐transport losses, whereas flat and concave architectures increasingly retain bubbles.
Zhiqing Tang   +9 more
wiley   +1 more source

A Scalable Double‐Sided Wet Etching Strategy for Large‐Area Mushroom‐Shaped Bionic Adhesives

open access: yesAdvanced Science, EarlyView.
This work presents a scalable manufacturing strategy for high‐performance, large‐area, mushroom‐shaped bio‐inspired adhesives. Using a double‐sided wet etching process, the complex 3D metal molds are fabricated rapidly and controllably. The resulting adhesive structures exhibit strong, stable adhesion under various conditions, including atmosphere and ...
Keju Ji   +8 more
wiley   +1 more source

Steindlian Models of Growth and Stagnation [PDF]

open access: yes
This paper examines Steindl’s original 1952 model and relates it to subsequent stagnationist models. The model is then extended by introducing endogenous changes in the markup and a reformulation of the investment function.
Peter Flaschel, Peter Skott
core  

Tests on probes designed to measure stagnation pressure directly in a supersonic stream [PDF]

open access: yes, 1973
The geometry is given of a probe capable of measuring stagnation pressure directly in a supersonic flow, by means of an isentropic compression. Tests have shown that such a probe can indicate the local stagnation pressure to within 0.1 per cent for Mach ...
A. R. G. Mundell
core   +3 more sources

Active Valve Resonant Pulse Combustor for Pressure Gain Combustion Applications

open access: yes, 2022
This work is an experimental demonstration of a novel resonant pulse combustor technology for which sustained pressure gain can be achieved at thermal equilibrium.
Lisanti, Joel   +3 more
core   +1 more source

Quantifying the influence of surface stagnation pressure on melt ejected particle size distributions in low pressure laser cutting

open access: yes
Laser cutting inherently produces hazardous aerosolised by-products. While complete elimination of these emissions is not feasible, effective control is essential to ensure environmental protection and process safety.
Lewis Jones (2612875)   +6 more
core   +5 more sources

Normal pressure hydrocephalus (NPH): ischaemia, CSF stagnation or both [PDF]

open access: yesBrain, 2004
Normal pressure hydrocephalus (NPH) is a clinical and radiographic syndrome first described by Hakim and Adams in 1965 (Hakim and Adams, 1965) and characterized clinically by gait apraxia (‘magnetic gait’), incontinence and dementia, and diagnosed predominantly among people over the age of 60 years. Only a minority of patients present with the complete
openaire   +1 more source

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