What is it about?
In this article, the effect of this ratio on the average pressure is investigated by solving Reynolds equation numerically, where the Jakobsson–Floberg–Olsson cavitation theory is implemented using a mass-conservative algorithm.
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Why is it important?
It is well accepted that the ratio of the dimple depth-over-diameter is a key geometric parameter in surface texturing design. For the identical operating conditions, does the predicted optimum dimple DOD ratio remain the same if one analyzes one parameter at the time, for example, by keeping the dimple depth constant and varying the diameter or vice versa?
Perspectives
The results show that the optimum dimple depth-over-diameter ratio should be determined at the given depth or diameter larger than a critical value. Otherwise, the considerably smaller maximum value of average pressure will be obtained. Moreover, a dimple depth or diameter should be selected carefully in conjunction with the operating conditions to determine the optimum dimple depth-over-diameter ratio.
Chenbo Ma
Nanjing Forestry University
Read the Original
This page is a summary of: On the optimum dimple depth-over-diameter ratio for textured surfaces, Advances in Mechanical Engineering, September 2017, SAGE Publications,
DOI: 10.1177/1687814017720085.
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