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对国内外的旋流式内消能工研究作了简要介绍并进行了评述。认为旋流式内消能工是解决高坝水力设计中高水头、大流量条件下泄水建筑物的安全和充分消能问题的新思维、新途径。旋流式内消能工是利用水流在泄水道中作大范围的旋转运动把下泄水流能量在泄水道内部进行大量消煞，使出流流速大大降低，从而保证建筑物的安全和下游良好的衔接条件。它具有结构简单、布置灵活、消能率高等优点，应用该种新型内消能工可将高水头水利枢纽工程中施工导流洞改建为永久泄洪洞。
The domestic and foreign research on swirling internal energy dissipators was briefly introduced and reviewed. It is considered that the swirling internal energy dissipater is a new way of thinking and a new way to solve the problem of safety and full energy dissipation of the discharged structures under high head and high flow conditions in the high dam hydraulic design. Swirling internal energy dissipater is the use of water flow in the drain for a wide range of rotational movement of the discharge water flow in the discharge channel a large number of internal evil, so that the flow velocity is greatly reduced to ensure the safety of buildings and the downstream good Cohesion conditions. The utility model has the advantages of simple structure, flexible arrangement and high energy dissipation rate. The new type of internal energy dissipater can be used to transform the construction diversion tunnel into a permanent flood discharge tunnel in the high head water project.