Flow-control capability of electronic-substrate-sized power supply for a plasma actuator

Model comparison of DBD-PA-induced body force in quiescent air and separated flow over NACA0015

“…[21] The local induced velocity of the D-D bulge case at 7kV measured in the downstream flow has the best agreement with the experimental result. [36] The maximum wall-parallel induced velocity in the S-H case with Dc = 0.0117 is consistent with that in the experiment, however, the local induced velocity is relatively high with different flow structure. In the post-stall flow over the airfoil at the angle of attack of 𝟏𝟐 ° and Reynolds number of 63000, the D-D bulge model at 7kV has approximately the same effect of leading-edge suction enhancement and reattachment promotion with the S-H model with Dc = 0.16, which was previously proved to be sufficiently high to achieve the control performance.…”

“…Moreover, the PA configuration has the minor effect on the maximum induced velocity, while the input voltage has the major effect on the induced flow structure. The best agreement is found between the S-H model and the experiment at 7kV [36] in the maximum induced velocity in wallparallel direction above the flat plate, which is also the only factor in determining the value of Dc. The S-H model with Dc = 0.0117, however, results in the much stronger downstream flow than the D-D models and the experiment due to the larger induced flow region, speculated by the location of the maximum induced velocity in farther downstream.…”

“…11 shows the flow fields at the physical time of 1.0s in the D-D and S-H simulations, which are confirmed as the steady state in the near field. The experimental result [36] is also included for comparison. The global maximum wall-parallel velocity (𝑢 3*4 ) in the computational and experimental cases are measured in Fig.…”

“…7. [36] 𝒖 𝒎𝒂𝒙 is the maximum wall-parallel induced velocity in the entire domain, 𝒖 𝒍 is the local maximum wall-parallel induced velocity at 0.208𝑳 𝒓𝒆𝒇 downstream. Both 𝒖 𝒎𝒂𝒙 and 𝒖 𝒍 are nondimensional.…”

“…Figure 11. The transient induced flow field at 1.0s in S-H and D-D simulations, comparing with the experimental result from the dataset of Sekimoto et al[36] 𝒖 𝒎𝒂𝒙 is the maximum wall-parallel induced velocity in the entire domain, 𝒖 𝒍 is the local maximum wall-parallel induced velocity at 0.208𝑳 𝒓𝒆𝒇 downstream. Both 𝒖 𝒎𝒂𝒙 and 𝒖 𝒍 are nondimensional.…”