I always get a warm fuzzy feeling when I see the buckingham-pi theorem used in hands-on way.
Yes water is a fluid (just like gas) and lot cheaper to test with!....just need to make the appropriate dimensionless scaling parameters.
UPI’s growth pangs, Japan eyes Indian chips
https://www.msn.com/en-in/money/news/upi-s-growth-pangs-japan-eyes-indian-chips/ar-AA1CpBn2?ocid=finance-verthp-feeds
South Korea and Taiwan Follow Japan’s Lead in India’s Semiconductor Push...