Experimental study of V-groove drag reduction effect in long-distance transportation pipeline

Measurements of flow field by means of a two-component LDV system have been carried out in turbulent boundary layers over a smooth surface and a drag reducing grooved surface with a zero pressure gradient.

The peak shape of thin blade riblets (TBR) has a pronounced effect on drag reduction.

Study on Pad Groove Design in Chemical Mechanical Polishing;

Analysis of tube burst resulted from the cavitation grooves on waterwall at the furnace arch of boiler;

In the paper, the vacuum infusion molding process based on grooves was investigated by experiments, and the parameters of width, d e pth and spacing for flow grooves and spacing for supply grooves were optimized a ccording on the molding experiments and various factors that had influence on th e mold filling process were discussed.

However, the rigid road surface poses strict requirements on proper roadbeds, whereas roads in town have many examining wells for underground pipes and grooves, which is potential threat to road surface and ~ cause its forepart breakage.

The Sand-Removing Machine Used between the Thin Wall Furrows of Cast Iron Parts;