3 ms·
The author doesn’t consider % void volume / aka ‘open-ness’ of the grill. (Or if they did, I missed it.) I’d predict the most open to Have the least resistance
by flybrand 4y ago
The author doesn’t consider % void volume / aka ‘open-ness’ of the grill. (Or if they did, I missed it.)
I’d predict the most open to Have the least resistance, which would give the least noise.
- teekert 4y agoI predict that is a large impact of laminar vs turbulent flow, which is not really an intuitive thing to reason about. But it could be that a more closed but weirdly shaped grill is better than a more open configuration? I'm not an expert, just have some experience with microfluidics, back in the day.
- mannykannot 4y agoAn engineer wishing to design a quieter or more efficient fan may be interested in developing a model in which 'open-ness' is a factor, but as a user, I am primarily interested in firstly creating the required airflow quietly, and secondly efficiently. For my concerns, direct measurements are more valuable than indirect ones. The author did not compare the grills at specific airflows, but the information is still useful.