Numerical and experimental investigations into characteristics of liquid film seals featuring various groove shapes based on super-slip groove design.

Based on our super-slip groove design, three-dimensional numerical models for liquid film under boundary conditions of no slip and super slip at the groove bottom of spiral groove, Tesla groove, and double spiral groove liquid film seals were established. The evolution characteristics of cavitation under different rotational speeds and ambient temperatures were studied, and visualization experiments were carried out through a self-built cavitation visualization test bench. The findings reveal that the super-slip design demonstrates groove universality, preserving the integrity of the liquid film while significantly reducing cavitation rate, enhancing opening force, minimizing leakage, and lowering liquid film temperature. Notably, the experimental observations align closely with the numerical results. • Visualization experiments have verified the accuracy of numerical simulation method for super-slip groove liquid film seals. • The proposed super-slip groove design offers groove universality. • The super-slip groove design significantly mitigates cavitation and enhances the performance of liquid film seals. [ABSTRACT FROM AUTHOR]