Patent ID: 6446710
Filing Date: 2002-09-10
Classification: F01D,F05D,F23R,F28F,Y10T

Abstract:
An arrangement for cooling a flow-passage wall comprising a flow passage having at least one rib element which induces flow vortices in a flow medium passing through the flow passage, attached to that side of the flow-passage wall which faces the flow passage and the shape and size of which are selected in accordance with a certain heat transfer coefficient and a certain pressure loss caused in the flow medium due to the latter flowing over the rib element, wherein the rib element, while largely retaining its original shape and/or size, has contours enlarging its surface facing the flow passage,the rib element has a square or rectangular cross section and, as a contour enlarging its surface, has a grove on its side facing the flow passage, and the rib element has a rib width w and a rib height e, and the groove has a groove depth d and a groove width b, and in that the relationship b=w/2 and d=e/2 are approximately true.