Blade, processing system and processing method
A blade is used in fluid and includes: a base member; and a coat layer that is formed on the base member, a plurality of first grooves and a plurality of second grooves are formed on a surface of the coat layer, a pitch of the plurality of first grooves is different from a pitch of the plurality of second grooves.
1. A blade for use in fluid, the blade comprising:
a base member; and
a coat layer that is formed on the base member, wherein
a plurality of first grooves, each of which has a first depth, and a plurality of second grooves, each of which has a second depth that is larger than the first depth, are formed on a surface of the coat layer,
a pitch of the plurality of first grooves is smaller than a pitch of the plurality of second grooves,
the plurality of first grooves include a groove configured to reduce a resistance of the coat layer to fluid, and
a direction along which at least one of the plurality of second grooves extends along the surface of the coat layer is different from a direction along which at least one of the plurality of first grooves extends along the surface of the coat layer.
2. The blade according to claim 1 , wherein
the plurality of first grooves are formed between two second grooves of the plurality of second grooves.
3. The blade according to claim 1 , wherein
a depth of a first groove of the plurality of first grooves is between 0.2% and 20% inclusive of a thickness of the coat layer.
4. The blade according to claim 1 , wherein
a depth of a second groove of the plurality of second grooves is equal to or smaller than 30% of a thickness of the coat layer.
5. The blade according to claim 1 , wherein
a depth of a second groove of the plurality of second grooves is between 1.5 times and 15 times inclusive of a depth of a first groove of the plurality of first grooves.
6. The blade according to claim 1 , wherein
a width of a first groove of the plurality of first grooves is different from a width of a second groove of the plurality of second grooves.
7. The blade according to claim 1 , wherein
a width of a second groove of the plurality of second grooves is equal to or larger than a width of a first groove of the plurality of first grooves.
8. The blade according to claim 1 , wherein
a width of a second groove of the plurality of second grooves is between 1 times and 10 times inclusive of a width of a first groove of the plurality of first grooves.
9. The blade according to claim 1 , wherein
the pitch of the plurality of second grooves is equal to or larger than the pitch of the plurality of first grooves.
10. The blade according claim 1 , wherein
the pitch of the plurality of second grooves is between 20 times and 30 times inclusive of the pitch of the plurality of first grooves.
11. The blade according to claim 1 , wherein
the pitch of the plurality of second grooves is an integral multiple of the pitch of the plurality of first grooves.
12. The blade according to claim 1 , wherein
a direction along which at least one of the plurality of second grooves extends along the surface of the coat layer is same as a direction along which at least one of the plurality of first grooves extends along the surface of the coat layer.
13. The blade according to claim 1 , wherein
the plurality of first grooves include a groove for constituting a riblet structure.
14. The blade according to claim 13 , wherein
the coat layer includes a heat resistant layer by which a transmission of heat from fluid to the base member is reducible.
15. The blade according to claim 1 , wherein
the blade is a turbine blade.
16. The blade according to claim 1 , wherein
an interval between the plurality of first grooves is different from an interval between the plurality of second grooves.
17. A turbine machinery comprising the blade according to claim 1 .
18. The blade according to claim 1 , wherein
a width of a second groove of the plurality of second grooves is narrower than the pitch of the plurality of second grooves.
19. A blade for use in fluid, the blade comprising:
a base member; and
a coat layer that is formed on the base member, wherein
a plurality of first grooves, each of which has a first depth, and a plurality of second grooves, each of which has a second depth that is larger than the first depth, are formed on a surface of the coat layer,
a pitch of the plurality of first grooves is smaller than a pitch of the plurality of second grooves,
the plurality of first grooves include a groove configured to reduce a resistance of the coat layer to fluid,
at least one of the plurality of second grooves extends along a first direction that is along the surface of the coat layer,
at least another one of the plurality of second grooves extends along a second direction that is along the surface of the coat layer and that intersects with the first direction, and
at least one of the plurality of first grooves extends along either one of the first direction and the second direction.
20. A blade for use in fluid, the blade comprising:
a base member; and
a coat layer that is formed on the base member, wherein
a plurality of first grooves, each of which has a first depth, and a plurality of second grooves, each of which has a second depth that is larger than the first depth, are formed on a surface of the coat layer,
a pitch of the plurality of first grooves is smaller than a pitch of the plurality of second grooves,
the plurality of first grooves include a groove configured to reduce a resistance of the coat layer to fluid,
the surface of the coat layer is divided into a plurality of areas by the plurality of second grooves, and
a characteristic of a first groove of the plurality of first grooves formed in a first area of the plurality of areas is different from a characteristic of another first groove of the plurality of first grooves formed in a second area, which is different from the first area, of the plurality of areas,
wherein the characteristic of the first groove and the characteristic of the other first groove each include at least one of a depth, a width, a pitch and an extending direction.