Google Groups Home
Help | Sign in
nucleation and cavitation
There are currently too many topics in this group that display first. To make this topic appear first, remove this option from another topic.
There was an error processing your request. Please try again.
flag
  1 message - Collapse all
The group you are posting to is a Usenet group. Messages posted to this group will make your email address visible to anyone on the Internet.
Your reply message has not been sent.
Your post was successful
kent.may...@gmail.com  
View profile
 More options Nov 24 2007, 9:42 am
Newsgroups: sci.engr.marine.hydrodynamics
From: kent.may...@gmail.com
Date: Sat, 24 Nov 2007 06:42:53 -0800 (PST)
Local: Sat, Nov 24 2007 9:42 am
Subject: nucleation and cavitation
 I am not sure if anyone here is interested but I guess that I am just
looking to see if there is anyone who hates the current theory of
nucleation (bubbles, cavitation, droplets) as much as I do. Moreover I
am looking for people who want to do something about it. I certainly
am trying and am currently writing a book on the. subject

Nucleation theory is a very complicated science, or at least it has
been rendered such over the last century. I am wondering if there are
any good folks of this forum who may wonder if there is a simpler
solution.
 Now I have published a simpler explanation with proof in the
journal:
Physics Essays, vol 17, number 4 2004, pg 476-495. A paper
entitled :"Energetics of Nucleation"
  Now I realize that blowing ones horn is a no no in physics, and to
that I agree. However in this case, I am starting to think it is time
to blow. The problem with nucleation theory starts with Gibbs famous
paper: Equilibrium of Heteroigeneous Substance" wherein he deals with
the nucleation of globules i.e. a liquid forming in a liquid (example
a lava lamp)
In a nutshell Gibbs equation for the nucleation of a globule has been
applied to both bubbles and droplets, both of which require a phase
change. So I believe that the foundation of the science of nucleation
is wrong. Moreover this may explain why the science has become so
darn
complicated when it should be simple.
 Interesting in 2001 the Lauterborne group published the energy
required to nucleate bubbles oin degasified water via a laser in
2001:
Paper B. Wolfrum, T. Kurz, O. Lindau and W. Lauterborne Phys. Rev. E.
64, 046306 (2001). Now they stated that current theory could not
explain the energy required to produce a bubble. Interestingly, all
their data point were an exact fit to what I had been saying, hence
my
paper was published (please note that previously referees would say
that in so far as I could explain everything that I had no proof.)
  Basically if one wants to calculate the energy required to nucleate
a bubble, one calculates the bubble's volume and pressure and then
calculates the number of vapor molecules and then uses the latent
heat
at that pressure to calculate the energy required for the phase
change. And onto that value one adds the energy required to form the
tensile layer based upon its surface area.
 Now the above assumes that the water is at its boiling point. If the
water is below its boiling point then one must add to the above, the
energy required to bring those molecules top their boiling point.
  To me the above is common sense. To experts in nucleation it does
not. Now the Lauterborne group have confided to me that yes their
data
is an exact fit to what I say but beyond that I have drawn a blank
from them. Human nature wins over logic sort of thing.
  If anyone out there is interested in further discussion of
nucleation, please let me know.
 Regards Kent Mayhew of Ottawa Canada


    Reply to author    Forward  
You must Sign in before you can post messages.
To post a message you must first join this group.
Please update your nickname on the subscription settings page before posting.
You do not have the permission required to post.
End of messages
« Back to Discussions « Newer topic     Older topic »

Create a group - Google Groups - Google Home - Terms of Service - Privacy Policy
©2008 Google