High-performance airfoils for transonic flows of Bethe-Zel'dovich-Thompson fluids are constructed using a robust and efficient Euler flow solver coupled with a multi-objective genetic algorithm. Bethe-Zel'dovich- Thompson fluids are characterized by negative values of the fundamental derivative of gasdynamics for a range of temperatures and pressures in the vapor phase, which leads to nonclassical gasdynamic behaviors such as the disintegration of compression shocks. Using Bethe-Zel'dovich-Thompson gases as working fluids may result in low drag exerted on airfoils operating at high transonic speeds, due to a substantial increase in the airfoil critical Mach number. This advantage can be further improved by a proper design of the airfoil shape, also leading to the enlargement of the airfoil operation range within which Bethe-Zel'dovich-Thompson effects are significant. Such a result is of particular interest in view of the exploitation of Bethe-Zel'dovich-Thompson fluids for the development of high-efficiency turbomachinery.
Airfoil shape optimization for transonic flows of Bethe-Zel'dovich-Thompson fluids
Tragflügelformoptimierung für transsonische Strömungen von Bethe-Zel'dovich-Thompson-Flüssigkeiten
AIAA Journal (online) ; 45 , 6 ; 1303-1316
2007
14 Seiten, 20 Bilder, 1 Tabelle, 40 Quellen
Article (Journal)
English
Tragflügelumströmung , transsonische Strömung , Euler-Bereich , Strömungsmodell , Gasdynamik , Druckwelle , Schockwelle , Zustandsgleichung , Rankine-Kreislauf , Aerodynamik , mechanischer Widerstand , Aeromechanik , thermodynamisches Modell , Fluorkohlenwasserstoff , Optimierungsalgorithmus , Widerstandskoeffizient , Mach-Zahl
FLUID DYNAMICS - Airfoil Shape Optimization for Transonic Flows of Bethe-Zel'dovich-Thompson Fluids
Online Contents | 2007
|EXPANSION SHOCK WAVE IN BETHE-ZEL'DOVICH-THOMPSON FLUIDS
TIBKAT | 2020
|Expansion shock wave in Bethe-Zel'dovich-Thompson fluids
AIAA | 2020
|