Considering the roughness and circumferential surface waviness of seal face and cavitation effect,a mathematical model for the analysis of liquid circle-dimples face seal was established.The pressure distribution and leakage rate of liquid face seal under different circle-dimples arrangements were numerically solved,and the influence of geometry parameters of surface waviness and sealing condition parameters on opening force and leakage rate was analyzed.The results show that the circumferential surface waviness significantly changes the pressure distribution of the seal face.With the increase of waviness amplitude,the sealing leakage rate increases gradually,and the leakage rate of radial partial dimples face seal is smaller than that of radial fully dimples face seal.However,when the film thickness is 2 μm,the leakage rate is relatively large for the partial dimples face seal.The waviness number has no obvious influence on the leakage rate of the two kinds of arranged face seals at low pressure.With the increase of the pressure,the circumferential waviness number makes the leakage rate of the radial fully dimpled face seal decrease gradually.The leakage of liquid circle-dimples faces seal is affected by rotating speed,sealing pressure,and film thickness.The sealing leakage is increased with the increase of sealing pressure,and is gradually decreased with the increase of rotational speed and film thickness.At high speed,dimples arrangement of sealing face has little influence on the sealing leakage.