DATABASE: Low Reynolds response to viscous vortical gusts.
The response of a NACA0012 airfoil impacted by viscous vortical gusts at low Reynolds numbers is investigated performing Direct Numerical Simulations of the two-dimensional incompressible flow. This database contains the time history of the aerodynamic force coefficients of the airfoil during the interaction with the vortical gust. The airfoil, set at a fixed angle of attack alpha, is impacted by Taylor/Lamb-Oseen vortical gust, which are characterized by a diameter D, a intensity v0m, and a vertical separation h. Direct Numerical Simulations are run for a range of values for the angle of attack, the size and intensity of the vortical gust, and the vertical separations. All simulations are run at a fixed Reynolds number Re=1000, based on the airfoil chord c and the free-stream velocity Uinf.
More details about this database can be found in: Martínez-Muriel & Flores (2020) Analysis of Vortical Gust Impact on Airfoils at low Reynolds number, J. Fluids Struct. 99, 103138
Contents
The database consist on a single ASCII file for each case. After a short, self-explanatory header, heach file has 7 columns with the following data:
time | t Uinf/c | ||
lift coefficient | C_l | ||
drag coefficient | C_d | ||
coefficient of moments with respect to c/4 | C_m | ||
perturbation of C_l with respect to steady state value | Delta C_l | ||
perturbation of C_d with respect to steady state value | Delta C_d | ||
perturbation of C_m with respect to steady state value | Delta C_m |
Reference time (t=0) is taken as the time at which the center of the vortical gust reaches the position of the leading edge of the airfoil (if advected at a velocity Uinf).
Nomenclature
The names of the files will follow the acronym t_AaYyDdVv.txt, where the lowecase letters are placeholders for:
t: | Type of vortical gust. | T: Taylor, LO: Lamb-Oseen | ||
a: | Angle of attack | alpha=[+8,0,-8] deg | ||
y: | Initial vertical position of the centre of the vortex | h/c=[0,0.5,1] | ||
d: | Diameter of the core of the vortex | D/c=[0.5,1,2] | ||
v: | Circumferential velocity | v0m/Unif=[0.1,0.3,1] |
IF YOU USE THIS DATABASE, PLEASE CITE US: Martínez-Muriel & Flores, J. Fluids Struct. 99, 103138 (2020).DOI: 10.1016/j.jfluidstructs.2020.103138
List of files
|—— LO_A0Y05D1V1.txt
|—— LO_A0Y0D1V1.txt
|—–– LO_A0Y1D1V1.txt
|—— T_A0Y05X4D05V03.txt
|—— T_A0Y05X4D05V1.txt
|—— T_A0Y05X4D1V01.txt
|—— T_A0Y05X4D1V03.txt
|—— T_A0Y05X4D1V1.txt
|—— T_A0Y05X4D2V01.txt
|—— T_A0Y05X4D2V03.txt
|—— T_A0Y05X4D2V1.txt
|—— T_A0Y0X4D05V01.txt
|—— T_A0Y0X4D05V03.txt
|—— T_A0Y0X4D05V1.txt
|—— T_A0Y0X4D1V01.txt
|—— T_A0Y0X4D1V03.txt
|—— T_A0Y0X4D1V1.txt
|—— T_A0Y0X4D2V01.txt
|—— T_A0Y0X4D2V03.txt
|—— T_A0Y0X4D2V1.txt
|—— T_A0Y1X4D05V01.txt
|—— T_A0Y1X4D05V03.txt
|—— T_A0Y1X4D05V1.txt
|—— T_A0Y1X4D1V01.txt
|—— T_A0Y1X4D1V03.txt
|—— T_A0Y1X4D1V1.txt
|—— T_A0Y1X4D2V01.txt
|—— T_A0Y1X4D2V03.txt
|—— T_A0Y1X4D2V1.txt
|—— T_A-8Y05X4D05V01.txt
|—— T_A+8Y05X4D05V01.txt
|—— T_A-8Y05X4D05V03.txt
|—— T_A+8Y05X4D05V03.txt
|—— T_A-8Y05X4D05V1.txt
|—— T_A+8Y05X4D05V1.txt
|—— T_A-8Y05X4D1V01.txt
|—— T_A+8Y05X4D1V01.txt
|—— T_A-8Y05X4D1V03.txt
|—— T_A+8Y05X4D1V03.txt
|—— T_A-8Y05X4D1V1.txt
|—— T_A+8Y05X4D1V1.txt
|—— T_A-8Y05X4D2V01.txt
|—— T_A+8Y05X4D2V01.txt
|—— T_A-8Y05X4D2V03.txt
|—— T_A+8Y05X4D2V03.txt
|—— T_A-8Y05X4D2V1.txt
|—— T_A+8Y05X4D2V1.txt
|—— T_A-8Y0X4D05V01.txt
|—— T_A+8Y0X4D05V01.txt
|—— T_A-8Y0X4D05V03.txt
|—— T_A+8Y0X4D05V03.txt
|—— T_A-8Y0X4D05V1.txt
|—— T_A+8Y0X4D05V1.txt
|—— T_A-8Y0X4D1V01.txt
|—— T_A+8Y0X4D1V01.txt
|—— T_A-8Y0X4D1V03.txt
|—— T_A+8Y0X4D1V03.txt
|—— T_A-8Y0X4D1V1.txt
|—— T_A+8Y0X4D1V1.txt
|—— T_A-8Y0X4D2V01.txt
|—— T_A+8Y0X4D2V01.txt
|—— T_A-8Y0X4D2V03.txt
|—— T_A+8Y0X4D2V03.txt
|—— T_A-8Y0X4D2V1.txt
|—— T_A+8Y0X4D2V1.txt
|—— T_A-8Y1X4D05V01.txt
|—— T_A+8Y1X4D05V01.txt
|—— T_A-8Y1X4D05V03.txt
|—— T_A+8Y1X4D05V03.txt
|—— T_A-8Y1X4D05V1.txt
|—— T_A+8Y1X4D05V1.txt
|—— T_A-8Y1X4D1V01.txt
|—— T_A+8Y1X4D1V01.txt
|—— T_A-8Y1X4D1V03.txt
|—— T_A+8Y1X4D1V03.txt
|—— T_A-8Y1X4D1V1.txt
|—— T_A+8Y1X4D1V1.txt
|—— T_A-8Y1X4D2V01.txt
|—— T_A+8Y1X4D2V01.txt
|—— T_A-8Y1X4D2V03.txt
|—— T_A+8Y1X4D2V03.txt
|—— T_A-8Y1X4D2V1.txt
|—— T_A+8Y1X4D2V1.txt