That is a simile becuase it uses as. Metaphors don't use "like" or "as".
A metaphor
A simile is a comparison which uses the words "like" or "as". A metaphor is a word which does use "like" or "as". Therefore, "The surge felt 'like' the blood was rushing to your hands" would be a simile.
when elena had won the english prize she felt like the cat that had got the cream
"the pain felt like i was being shot, i didn't want to say goodbye to Charlie"
This metaphor conveys the idea that the breeze felt comforting and soothing, like being wrapped in a warm blanket. It suggests that the breeze provided a sense of security and relaxation, similar to the feeling of being snug and cozy under a blanket.
metaphor
I felt injustice as a strayed cat!
No, "felt on top of the world" is not a simile. It is an idiom used to express feeling extremely happy or successful. A simile is a figure of speech that compares two unlike things using "like" or "as," such as "as busy as a bee."
1.-a figure of speech in which two unlike things are explicitly compared, as in "she is like a rose." Compare metaphor. 2.-an instance of such a figure of speech or a use of words exemplifying it.
I felt as lost as Alice in Wonderland.
I felt like an alligator in a swamp.
i felt like a child again.