Results 61 to 70 of about 81,739 (264)

Thermographic Phosphors for High Temperature Measurements: Principles, Current State of the Art and Recent Applications

open access: yesSensors, 2008
This paper reviews the state of phosphor thermometry, focusing on developments in the past 15 years. The fundamental principles and theory are presented, and the various spectral and temporal modes, including the lifetime decay, rise time and intensity ...
Konstantinos Kontis   +1 more
doaj   +1 more source

Transfer learning: A new aerodynamic force identification network based on adaptive EMD and soft thresholding in hypersonic wind tunnel

open access: yesChinese Journal of Aeronautics, 2023
Yi Sun   +6 more
semanticscholar   +1 more source

Assessment of Numerical Method by Experimental Data for Integrated Hypersonic Vehicles

open access: yesJournal of Applied Fluid Mechanics, 2019
This paper addresses the problem of rapid aerodynamic assessment and experimental verification of integrated hypersonic vehicles. Based on the adaptive Cartesian grid system, the aerodynamic performance of the air-breathing hypersonic vehicle is ...
X. Wen, J. Liu, Z. Liu, Z. Xia, L. Jin
doaj  

An optical fiber balance for short-time wind tunnel force measurement of large-scale scramjet models

open access: yesAIP Advances
The scale of a scramjet has a profound impact on its combustion characteristics, and accurately replicating the integrated coupling dynamics between an aircraft and a scramjet in wind tunnel tests remains a significant challenge.
Bin Xu, Shien Yu, Jianzhong Zhang
doaj   +1 more source

Effect of Wavy Wall on the Stability of Conical Hypersonic Boundary Layer at Small Angle of Attack

open access: yes气体物理
In order to obtain a high lift-drag ratio, hypersonic vehicles usually fly with a certain angle of attack. As a potential means to delay hypersonic boundary layer transition at 0° angle of attack, it is not clear how wavy wall affect the deve-lopment of ...
Chengjian ZHANG   +4 more
doaj   +1 more source

Application of Different PDF Models for Numerical Simulation of Scramjet

open access: yesHangkong gongcheng jinzhan, 2019
Since the turbulence-combustion interaction is of great influence on complex supersonic combustion field, the different distribution of probability density function(PDF) models is studied on the basis of assumed PDF models.
Ding Haixin, Zhong Chengwen
doaj   +1 more source

Experiment on Shock Wave Control of a Hypersonic Vehicle Standard Model Based on Plasma Synthetic Jet

open access: yes气体物理
The novel active flow control technology based on plasma synthetic jet (PSJ) has great application potential in the field of shock wave control due to its advantages such as no gas source, strong control ability, and wide excitation frequency band.
Wei XIE   +5 more
doaj   +1 more source

Experimental investigation of the influence of the passive porous coating on laminar-turbulent transition of the hypersonic boundary layer of the sharp cone at angles of attack

open access: yesMATEC Web of Conferences, 2017
The problem of the delaying laminar to turbulent transition by the passive porous coating on the sharp cone at the angle of attack has been studied for the first time.
Morozov Sergey   +2 more
doaj   +1 more source

A Numerical Simulation of Hypersonic Wind Tunnel Flow.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 1994
In our country, some hypersonic wind tunnels for development of space planes and supersonic transports are now under construction and planned to construct. For designing these wind tunnels, it is indispensable to make use of CFD technology. This paper describes the results of a numerical simulation of the flow passage of a hypersonic wind tunnel.
Takashi Kawashima   +3 more
openaire   +2 more sources

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