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roughness elements

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roughness elements [′rəf·nəs ‚el·ə·məns]
(oceanography)
Structures attached to laboratory models to simulate the roughness of the ocean floor.


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1-3) have demonstrated experimentally that significant cycle time reductions can be achieved by adding pins (28% reduction) or roughness elements (18% reduction) to the exterior of a mold surface.
The following three methods were proposed by researchers for modeling the surface roughness effects on fluid flow in microchannels, conduits, and tubes: * The use of some regular (normally rectangle) roughness elements [9] or irregular and randomly distributed roughness elements [10] in the computation domain.
The increase in mold mass due to roughness elements and pins have been included in the RotoSim simulations.
 
 
 
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