Chemistry - opposite of turbulent

[Ilka]

Hi,

I am translating a text about a sprayed mixture of water and alcohol that needs to be "still/tranquil/calm" in order to ignite. Does anyone know which word is used in chemistry in English? Whatever it is, it's the opposite of "turbulent".

Thanks.

Ilka

[bnjtokyo]

"Still" seems to the best choice. However, I find it difficult to imagine a "still" spray. Is it supposed to ignite while it is being sprayed? Or after the spray has accumulated on a surface?

[Apoclima]

I can't think of it! But it must have to do with the fact that alcohol evaporates more quickly, and once the mixture has been spread, the water settles behind and the alcohol begins to evaporate forming a flammable vapor above the surface of the remaining water-alcohol mixture!

Larry?

Apo

[Stargzer]

A couple of links from the AlphaDictionary Chemistry Dictionaries page, although don't know how good they are. If they don't help you now they may be of use in the future.

http://koal2.cop.fi/leonardo/

http://www-woc.sci.kun.nl/translation/


I was thinking of the term quiescent, but I don't know if it's used in chemistry, other than a "quiescently frozen confection," which used to appear on the wrapper of the Good Humor Ice Cream I sold during the summer in college. It's been 32 years since I had to remember any chemistry.

Webster's 1828 seems to have a relevant definition.

How exactly is it used?

[Ilka]

"However, I find it difficult to imagine a "still" spray. Is it supposed to ignite while it is being sprayed?

The spray mist is what ignites -- after it's been sprayed. But like you say, I can't really imagine it ever being still. The document just says that still, dense spray mist with small droplets ignites more readily than turbulent, less dense sprays.

Larry, it looks like you found it for me. "Quiescent gas" gets plenty of hits on Google, and what clinched it for me is that it does well in combination with "turbulent". Thanks very much.

Ilka

[Stargzer]

. . .The spray mist is what ignites -- after it's been sprayed. But like you say, I can't really imagine it ever being still. The document just says that still, dense spray mist with small droplets ignites more readily than turbulent, less dense sprays.
. . .

Ilka

Let's take another crack at it.

How about the adjective fine or the noun mist as in a fine mist?

See also the AHD entry for mist

A mist is not turbulent, as a spray would be, since the particle size is finer, i. e., smaller.

[tcward]

Fine mist! That's got my vote. But it looks like Ilka's already started running with the other suggestion...

-Tim

[anders]

The opposite of "turbulent" would normally be "laminar", referring to the flow characteristics, but that doesn't seem to fit the context. What are the words of the original language?

[bnjtokyo]

The document just says that still, dense spray mist with small droplets ignites more readily than turbulent, less dense sprays.

Maybe a "coherent, dense spray" ignites more readily than a turbulent one.

Cheers,