Novel air film hole with improved cooling efficiency
A technology of cooling efficiency and air film holes, applied in the field of new air film holes, can solve the problems of combination, unrealized expansion holes and opening transverse grooves, etc., to achieve the effect of good cooling effect, wide coverage of cold air, and high transverse cooling efficiency.
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[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0022] Reference figure 1 , 2 shows a side view and a top view of a novel hole for improving film cooling efficiency of the present invention, including a tapered hole 1, a transverse groove 2 and a minimum unit body (new hole) 3. The angle α between the hole axis of the novel hole 3 of the present invention and the flow direction is between 10° and 40°, the angle β between the conical opening and the hole axis is between 10° and 20°, and the upstream is a height h1 ( 0.5D~1.0D) vertical fixed wall, the height of air film hole 3 is 2.5D~3.5D expressed by H, the depth h of transverse groove 2 is between 0.5D~1.0D, the vertical fixed wall upstream and downstream of the transverse groove The opening distance w of the conical air film hole 1 is between 1.0D and 1.5D, the width of the transverse groove 2 is W, and the distance P between the holes is between 3.0D and ...
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