6/1/2023 0 Comments Airfoil aerodynamicsLissaman, “ Low-Reynolds-number airfoils,” Annu. Discetti et al., “ Separating adverse-pressure-gradient and Reynolds-number effects in turbulent boundary layers,” Phys. Chopra, “ Basic understanding of unsteady airfoil aerodynamics at low Reynolds numbers,” in AIAA Aerospace Sciences Meeting, 2018. Nishimura, “ Experimental study on mean velocity and turbulence characteristics of plane Couette flow: low-Reynolds-number effects and large longitudinal vortical structure,” J. Therefore, it is important to consider the viscous effect on flows at a low Reynolds number. According to the definition of the Reynolds number, the ratio of the inertial force of the fluid to its viscous force is lower at a lower Reynolds number, indicating the growth of viscous effects. Tang et al., Aerodynamics of Low Reynolds Number Flyers ( Cambridge University Press, New York, 2008). ![]() Drela, “ XFOIL: An analysis and design system for low Reynolds number airfoils,” in Low Reynolds Number Aerodynamics ( Springer, Berlin, Heidelberg, 1989), pp. In the design of aerospace vehicles, the value of 10 5 is commonly used to identify the range of the low Reynolds number, and conventional aircrafts operate at Reynolds numbers of up to 10 6 and higher, 6,7 6. The threshold used to define the low Reynolds number is different in different fields of research. ![]() An experimental investigation of the circumstances which determine whether the motion of water shall be direct or sinuous, and of the law of resistance in parallel channels,” Philos. The ratio of the inertial force to the viscous force of a fluid is used to define the Reynolds number R e = ρ V L μ, where V is the velocity of air at the inlet, ρ is the density, μ is the kinematic viscosity of the fluid, and L denotes the characteristic scale of the vehicle.
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