I've been telling newbie authors this for some time, but I never knew that there was actually a term for it.
The following comes from a Quora article entitled: What's the best writing advice you can give?
What is your best writing tip?
It's a technique called "spinning down the page".
You can study all the writing tips and techniques you like and you'll probably find that some work for you and some don't. But no matter how you write, you will have occasional periods (maybe very rare) where it just seems to flow.
When that happens, let it!
Type or write as fast as your brain will let your hands go. Don't stop!
Don't spell-check. Don't worry about the grammar. Let every typo stand. Forget most of the punctuation for now.
Just get it down. Somehow. Anyhow!
The flow will stop eventually, but if you're lucky, you may get a couple of pages done. And when it does stop, then you can go back and fix everything.
But don't let the fixing interrupt the creativity. Spin down the page.