Analysis and prediction of suspension force characteristics in a scalable hydrodynamic suspension micropump

To further verify the versatility of the GL-HSMP across various operating conditions, the established numerical model was used to predict the suspension force characteristics at different rotational speeds, fluid viscosities, and flow rates. The results demonstrate that the GL-HSMP enables suspension through hydrodynamic lubrication in the radial direction and centrifugal effects in the axial direction. Moreover, stable suspension can be achieved under all investigated conditions.

Finally, we fabricated a GL-HSMP prototype and built an experimental test rig. Experimental results demonstrate that the prototype achieves a power density of 38.54 W L-1 at 22,000 revolutions per minute (RPM), surpassing leading industry products. Furthermore, hydraulic performance from experiments and simulations shows good agreement, validating the effectiveness of the simulation model.