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The fluid dynamic pressure wavy‑tilt‑dam mechanical face seal has become a key component ensuring the long‑term stable operation of nuclear main pumps due to its controllable leakage，stable performance，and high reliability.This paper systematically reviews the research progress of fluid dynamic pressure wavy‑tilt‑dam mechanical seals for nuclear main pumps both domestically and internationally.Although relevant research in China started relatively late，driven by the national nuclear power development strategy，domestic research has achieved a transition from following to running in parallel with international efforts.Concurrently，advancements in computational technology have deepened the study of seal friction and lubrication theory.At present，theoretical models for wavy‑tilt‑dam face seals primarily focus on three major subjects：the fluid characteristics of the liquid film，the fluid‑structure interaction between the seal face and the liquid film，and the interaction between the seal ring and the fluid medium.The research paradigm is expanding from single‑physics‑field analysis to multi‑physics‑field coupling simulations.Existing research has been reviewed and summarized from three core perspectives：the design of the fluid film wavy shape，the mechanism of hydrodynamic lubrication，and the collaborative deformation of friction pair components.On this basis，optimization suggestions for future research are proposed：establishing a composite topography fluid film model incorporating roughness and wavy‑tilt‑dam characteristics；developing a hydrodynamic lubrication theory applicable to the coexistence of mixed lubrication and hydrodynamic lubrication；and conducting in‑depth research on the multi‑component collaborative deformation laws specific to nuclear main pump operating conditions，aiming to provide theoretical references for the design and engineering application of high‑performance seals.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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