Surface protection against cavitation erosion
AssigneesOtto-Von-Guericke-Universitat Magdeburg, King Abdullah University of Science and Technology
InventorsClaus-Dieter Ohl, Silvestre Roberto Gonzalez-Avila, Dang Minh Nguyen, Himanshu Mishra
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method for protecting surfaces of components against cavitation erosion and components provided with such cavitation protection surfaces, wherein in the surface a plurality of microcavities is provided which entrap gas such as air; the gas, air, entrapped inside the microcavities expands in the vicinity of cavitation bubbles, forming a gas cushion layer that directs cavitation jets away from the surface, thereby protecting the surface against cavitation erosion; the cavitation having a reentrant or double reentrant inlet design with typical T-shape and T-shape profile
Claims19
A method for protecting a surface of a component against cavitation erosion,
- wherein in the surface a plurality of microcavities is provided
- wherein the microcavities have an inlet (2) at the surface (1) with horizontal overhang (3), or
- wherein the microcavities have an inlet (2) at the surface (1) with horizontal overhang (3) and a vertical overhang (4) provided at the free end of the horizontal overhang (3),
- both with a turn of at least 90° with reference to the longitudinal axis of the cavity.
Dependencies are inferred from the claim text.