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777:"A system in a steady state has numerous properties that are unchanging in time." Numerous implies more than one. Are there no steady-state systems with exactly one unchanging property? "This implies that for any property p of the system, the partial derivative with respect to time is zero". I see no such implication. "Numerous" does not imply "all".
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I concur; if I take the point of view of a specified geometric or geographic point in a system, say fluid flow through a pipe, then if the fluid flow at that point is fully developed, the properties of the system at that point are unchanging; however, if I take the point of view of a particle in the
852:
A chemical engineering system is only marginally more complicated, and I would argue that the added complexity is uneeded in a simple example. In a chemical engineering probelm, considering a mixed bath with steady state in-flow and outflow is a normal problem. Would it be more clear that it is
636:, a non-standard cosmological view developed in 1949 by Fred Hoyle and others as an alternative to the Big Bang theory, is certainly a very distinctive concept quite different in implication from the others,and must have a separate article.
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could and should be merged. The term "Steady state" is basically a formal term without any specific meaning. Adding a listing and references to the specific meanings to this article should be a good thing.
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722:: these are all very different in each field. Since Mietchen hasn't even defended the idea for over 3 months, I'm going to edit boldly and remove the merge proposal from this page.--
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chemical engineering if we instead look at how a bath withtwo inlet flows with different components and one outlet flow eventually cause a steady state composition of the bath (see:
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782:"for any property p of the system, the partial derivative with respect to time is zero" So if "properties" are the only things observable, then no change whatsoever is observable.
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If the speed of a particle is unchanging and non-zero, then its position is changing. So if "speed" in general is a property, then "position" is not a property.
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system (even in fully developed flow and nothing else is changing), my position is changing, therefore _not_ steady state (per the definition provided so far).
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In the cosmological Steady State Theory, the amount of matter in the universe and the size of the universe are known to be changing.
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Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.
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Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section.
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They all have independent literature, and are part of different subjects, even though they are based upon the same
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I have added the links mentioned above (plus a few more). Good starting points for realizing the merger might be
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So something seems to be wrong. Some properties don't change, but maybe others do. Or am I wrong?
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on
Knowledge. If you would like to participate, please visit the project page, where you can join
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Knowledge. If you would like to participate, please visit the project page, where you can join
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The example of the bathtub is clearly an example about
Physics, not Chemical engineering.
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Steady state (chemical engineering), a central term in the execution of unit operations
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Sorry to say so, but seven months after my remark above, the intro is still crap.
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could be merged in here, as long there is not more to say about these subjects.
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Somebody who knows what they are talking about please fix this. Thank you.
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The above discussion is preserved as an archive of the proposal.
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is integral part of chemistry cannot possibly merged.
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The following is a closed discussion of the proposal.
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Knowledge level-5 vital articles in
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