Heat-transfer device and gas turbine combustor with same

A heat-transfer device for facilitating heat exchange between a heat transfer object and a heat transfer medium flowing along a surface of the heat transfer object, the heat-transfer device comprising:

• at least one longitudinal vortex generating device protruding toward a flow passage of the heat transfer medium, the at least one longitudinal vortex generating device being configured to generate a longitudinal vortex with a central axis in a flow direction of the heat transfer medium to stir the heat transfer medium flowing in the flow passage;
• and
• at least one radiator fin provided on the surface of the heat transfer object only in a region A out of two regions A and B which differ in flow direction on a swirling plane of the longitudinal vortex by the at least one longitudinal vortex generating device, the region A being a region where a flow of the longitudinal vortex on the swirling plane is directed away from a heat transfer object side, the region B being a region where a flow of the longitudinal vortex on the swirling plane is directed toward the heat transfer object side, the at least one radiator fin being configured to exchange heat with the heat transfer medium stirred by the at least one longitudinal vortex generating device, wherein:
• the at least one longitudinal vortex generating device is a convex portion protruding from a surface side of the heat transfer object toward the flow passage;
• the at least one radiator fin is a plate-shaped member disposed in a standing condition on the surface of the heat transfer object, downstream of the at least one longitudinal vortex generating device in the flow direction of the heat transfer medium, the at least one radiator fin extending in the flow direction of the heat transfer medium;
• and
• the at least one radiator fin is formed so that a cross-section of the radiator fin is gradually thinner from a base toward a tip and so that an outer profile of the cross-section has a concave shape obtained by curvilinearly forming a geometrical shape of a portion of an ellipsis.