## 3 Results and Discussion
### Relationship between Wind Resistance and Height of the Experimental Capsule  
To investigate the impact of the height of the experimental capsule on wind resistance, scenarios at an angular velocity of 57 rads/s and heights ranging from 1400 to 2200 mm were studied. In Figure 9, the purple spheres represent the simulated wind resistance power at different heights. The figure reveals that wind resistance generally increases with increasing height, showing a maximum increase of approximately 34%. Compared to the influence of the radius, the effect of height on wind resistance is more pronounced. However, the influence of height on wind resistance did not increase linearly; we observed a notable increase in wind resistance when the height increased from 1600 to 1700 mm. Considering Equation (18), because the spatial distribution of the velocity undergoes relatively significant changes with an increase in height, it is not possible to directly analyze the cause of the increased wind resistance through the effective viscosity. Therefore, in this case, we utilized the Reynolds number to observe the changes in turbulence with increasing height. The yellow circles shown in Figure 9 indicate the average vertical sectional Reynolds numbers obtained from the simulations at different heights. We found that the Reynolds number gradually increased with increasing height and that there was a notable spike in the Reynolds number when the height increased from 1600 to 1700 mm. To analyze the causes of the changes in the Reynolds number, we present the local Reynolds number contour maps near the armature at different heights (Figure 10). Figure 10 shows the Reynolds number contour map at a height of 1400 mm; in the observation area, the Reynolds numbers between the armature and wall surface are small, represented by blue shades of color. When the height increased from 1600 to 1700 mm, as shown in Figure 10,c, in the observation areas, as the armature moves further away from the wall surface, the middle regions in the contour map rapidly change from blue to orange, indicating a rapid increase in the Reynolds numbers between the armature and wall surface. Finally, when the height increases from 1700 to 2000 mm, as illustrated in  
Figure 8: Effective viscosity at different radii, where (**a**) represents 4350 mm effective viscosity diagram, and (**b**) is 4650 mm effective viscosity diagram. Figure 10c,d, the orange regions continue to expand, and the Reynolds numbers between the armature and wall surface continue to increase in the observation areas. These results demonstrate that the development of the Reynolds number is suppressed when the armature is close to the wall. As the armature moves away from the wall, the Reynolds number gradually increases, and a specific height range exists in which the Reynolds number rapidly increases. Similar phenomena have been widely reported in studies on the von Karman vortex street phenomenon. For instance, [PERSON] et al. [23] documented the aerodynamic behavior of a smooth circular cylinder near a fixed wall in a wind tunnel with a high-Reynolds-number flow and reported that as the cylinder approached the ground plane, the drag sharply decreased and then increased owing to the Venturi effect near the wall suppressing vortex shedding. The von Karman vortex street phenomenon has not been previously reported in other supergravity centrifuge studies; therefore, to confirm its presence, we present vorticity cloud plots for a cylindrical cross-section with a radius R of 3500 mm in Figure 11. Figure 11a,b illustrates the vorticity cloud plot for the cylindrical cross-section at heights of 1400 and 2200 mm, respectively. Both figures exhibit vorticity in the wake region of the armature. When the wall is close to the armature, as shown in Figure 11a, the high-vorticity region develops inadequately because of the influence of the wall.