Case Studies in Thermal Engineering, 2021 Wall partial pressure dependence analysis of oxygen surface catalytic recombination efficiency on copper-coated surface is experimentally performed in a shock tube at room temperature.
Yosheph Yang +5 more
doaj +1 more source
Characteristics of Air Impingement From an Orifice on a Target Plate [PDF]
Engineering and Technology Journal, 2013 The present work is an experimental and numerical CFD study of air impingement from orifices of different sizes in the range of (10-40) mm with a step increase of 10 mm.
Adnan A. Abdul Rasool
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Study of Effect of Convergence Section Geometric on the Performance of a Sonic Nozzle [PDF]
Journal of Applied Fluid MechanicsCritical flow Venturi nozzles (toroidal, cylindrical, convergent–divergent, or C–D) nozzles) have discharge coefficients predicted through numerical and experimental investigations.
F. A. Kassem, A. A. Zahran, M. Adel
doaj +1 more source
Increase in stagnation pressure and enthalpy in shock tunnels [PDF]
31st Aerospace Sciences Meeting, 1993 A new technique based on the insertion of a converging section in the driven tube is described which is capable of producing substantial increases in both reservoir pressure and enthalpy. A 1D inviscid full kinetics code is used to study a number of different locations and shapes for the converging driven tube section.
DAVID BOGDANOFF, JEAN-LUC CAMBIER
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Analysis of the forces driving the oscillations in 3D fluidic oscillators [PDF]
, 2019 One of the main advantages of fluidic oscillators is that they do not have moving parts, which brings high reliability whenever being used in real applications.
Baghaei, Masoud +1 more
core +2 more sources
OPTIMIZED CONTROLLER DESIGN FOR A BLOWDOWN SUPERSONIC WIND TUNNEL BY USING GENETIC ALGORITHM [PDF]
مجله مدل سازی در مهندسی, 2017 Blowdown Supersonic Wind Tunnels (SWTs) are generally operated with a constant stagnation pressure in the settling chamber, with control usually provided by one or more pressure regulators or control valves. In this paper, first, a Simulink block diagram
Mehradad Bazazzadeh +3 more
doaj +1 more source
Optimization of operating conditions in the steam turbine blade cascade using the black-box method
Propulsion and Power Research, 2023 Water droplets cause corrosion and erosion, condensation loss, and thermal efficiency reduction in low-pressure steam turbines. In this study, multi-objective optimization was carried out using the black-box method through the automatic linking of a ...
Vahid Sadrian +5 more
doaj +1 more source
Vortex shedding in a two-dimensional diffuser: theory and simulation of separation control by periodic mass injection [PDF]
, 2004 We develop a reduced-order model for large-scale unsteadiness (vortex shedding) in a two-dimensional diffuser and use the model to show how periodic mass injection near the separation point reduces stagnation pressure loss.
Colonius, Tim +2 more
core +1 more source
Experimental Study on Critical Flow of Supercritical CO2 at Steady State and Model Verification
Yuanzineng kexue jishu, 2022 When the loss of coolant accident happens in a reactor, because of the high temperature and high pressure in the reactor and the low external pressure, the critical flow may occur at the break due to sharp depressurization and vaporization.
LI Weiqing;ZHANG Dongxu;ZHAO Minfu
doaj
Micrometer-sized droplets from liquid helium jets at low stagnation pressures [PDF]
Physics of Fluids, 2022 Droplets and droplet beams produced from the breakup of micrometer-sized liquid helium jets in vacuum were studied in this work, advancing into previously unexplored regimes of low stagnation pressures. Using a 5 μm orifice, the droplet beam shows surprisingly diverse characteristics at increasing nozzle pressures from 0.6 to 100 bar: a well-collimated
Katharina Kolatzki +5 more
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