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Moving Model Test of High-Speed Train Aerodynamic Drag Based on Stagnation Pressure Measurements. [PDF]

open access: goldPLoS ONE, 2017
A moving model test method based on stagnation pressure measurements is proposed to measure the train aerodynamic drag coefficient. Because the front tip of a high-speed train has a high pressure area and because a stagnation point occurs in the center ...
Mingzhi Yang   +4 more
doaj   +5 more sources

Model-based stagnation pressure control in a supersonic wind tunnel [PDF]

open access: diamondFME Transactions, 2016
The flow parameters control in wind tunnels is an area of intense research in recent years, with the aim of improving quality and efficiency of the wind tunnel operation.
Ilić Biljana   +3 more
doaj   +5 more sources

Nonlinear L 1 adaptive control of stagnation pressure in a cryogenic wind tunnel [PDF]

open access: diamondAdvances in Aerodynamics, 2020
Cryogenic wind tunnel is a sophisticated aerodynamics ground test facility, which operates in cryogenic temperature with injection of liquid nitrogen. The multi-variable, nonlinear and coupled dynamics existing between the temperature, pressure and Mach ...
Rusong Zhu   +4 more
doaj   +5 more sources

Measurements of the stagnation pressure in the center of a cavitating jet [PDF]

open access: hybridExperiments in Fluids, 2011
The stagnation pressure at a certain distance from the nozzle is important for the erosion/ cutting capacity of a submerged jet in dredging. The decay of the stagnation pressure with jet distance is well known in the case of non-cavitating jets.
A. J. Nobel, A.M. Talmon
semanticscholar   +6 more sources

Definition of vortex boundary using stagnation pressure [PDF]

open access: greenPhysical Review Fluids
A novel method is proposed to identify vortex boundary and center of rotation based on tubular surfaces of constant stagnation pressure and minimum of the stagnation pressure gradient.
Marc Plasseraud, Krishnan Mahesh
semanticscholar   +5 more sources

Increase in stagnation pressure and enthalpy in shock tunnels [PDF]

open access: green31st 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 W. Bogdanoff, Jean-Luc Cambier
openalex   +2 more sources

Empirical equation of the Mach number as a function of the stagnation pressure ratio for a quasi-one-dimensional compressible flow [PDF]

open access: diamondFME Transactions, 2023
In the present work for a quasi-one-dimensional isentropic compressible flow model, an empirical equation of the Mach number is constructed as a function of the stagnation pressure ratio for an analytical equation that algebraic procedures cannot invert.
Tolentino San Luis
doaj   +2 more sources

Interaction of two vortices in a flued with lower stagnation pressure [PDF]

open access: bronzeQuarterly of Applied Mathematics, 1977
The flow field induced by two point vortices of strength Γ \Gamma at a distance 2 h 2h apart in a quiescent field with lower stagnation pressure is investigated. The flow field around the vortices is bounded by a free streamline with constant velocity U U determined by the ...
Lu Ting
openalex   +2 more sources

Increasing stagnation pressure and thermonuclear performance of inertial confinement fusion capsules by the introduction of a high-Z dopant

open access: greenPhysics of Plasmas, 2018
Inertial confinement fusion requires the inertia of the imploding mass to provide the necessary confinement such that the core reaches adequate high density, temperature, and pressure. Experiments utilize low-Z capsules filled with hydrogenic fuel, which
L. Berzak Hopkins   +19 more
openalex   +3 more sources

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