This is my second attempt at this post.
When I pressed "Submit", the forum software
evidently thought I was intending to surrender, and decided I wasn't logged on, and tossed my first submission out the air-lock into cyberspace.
(... even though I had just logged back in after the site came back after a maintenance
period, and my name appeared at the top of the same page)
I did a quick calc to make sure my intuition here was not off-beam.
Conveniently, because the coeff for alu is double that for steel
, and the latter similar to oil, I was able to do the calc for a steel
sternleg containing a fluid with a zero coefficient. The answer should be about the same.
(Alu: 20 millionths linear expansion per deg C; Steel and Oil: 10 millionths)
The volume of a 100mm cubic (1 litre) steel container, for 1 deg C increase, would grow to about 1.00001^3 of the original size, or ~ 1.00003
Hence a volumetric increase of 1.00003 – 1 , or 0.00003 litres
so for a 30 degree C rise, the volumetric increase would be thirty times this, or 0.0009 litres, say 0.001 litres, or one-thousandth of a litre
Which would *roughly* be a level change of one tenth of a millimetre in the original container. (because 100mm level change corresponds to a whole litre)
in US customary units: a change in level of about four one-thousandths of an inch, for a temperature change of about 85 degrees F.