Digitale Bibliotheek
Sluiten Bladeren door artikelen uit een tijdschrift
 
<< vorige    volgende >>
     Tijdschrift beschrijving
       Alle jaargangen van het bijbehorende tijdschrift
         Alle afleveringen van het bijbehorende jaargang
           Alle artikelen van de bijbehorende aflevering
                                       Details van artikel 29 van 31 gevonden artikelen
 
 
  Visualizing Strake and Wing Vortices in Supersonic Flow by a Thermographic Technique
 
 
Titel: Visualizing Strake and Wing Vortices in Supersonic Flow by a Thermographic Technique
Auteur: G. Zuppardi
F. Valenza
Verschenen in: Journal of visualization
Paginering: Jaargang 2 (2002) nr. 1 pagina's 59-71
Jaar: 2002-09-06
Inhoud: The Unsteady Computerized Thermographic Technique (UCTT) provides patterns of the Stanton number on a body surface. These patterns are the imprints of the flow field. The UCTT already proved to be a powerful, not intrusive diagnostic tool both for the visualization and the strength evaluation of vortical structures on the lee-side surface of delta wing models. The patterns are obtained by processing, by an "ad hoc" mathematical model, the temperature time evolution of the model surface. The temperature is measured at a distance by a thermocamera. In previous tests on delta wing models, the used thermocamera showed a limitation in the optics and did not provide an appropriate space resolution and, therefore, a detailed visualization of whole vortical structure. In the present paper this limitation has been overcome. The optics improvement has doubled the space resolution of thermocamera. Tests, made at angle of attack of 6-deg. and Mach number of 1.92, verified that this improvement was substantial. In fact, the detection of secondary vortex on delta wing model and strake vortices on a double delta wing model was made possible. Unfortunately, it was not possible to visualize details of vortical structure on a Gothic wing model. Tests showed that vortical patterns were similar to the one on delta wing model.
Uitgever: IOS Press
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details van artikel 29 van 31 gevonden artikelen
 
<< vorige    volgende >>
 
 Koninklijke Bibliotheek - Nationale Bibliotheek van Nederland