<html> <head> </head> <body> I'm hardly a hydrodynamics expert, but I would think that total storage volume in the system is the other critical factor.<br> <br> A chamber stores that volume close by. But a long simple tube with multiple feeders would provide a similar sort of effect - i.e. once the system empties some of itself, the pressure relieves enough that the lower water begins to flash to steam as well. This might explain the water phase/steam phase system.<br> <br> Or I could be applying far too simplistic an explanation as well.<br> <br> SRK<br> <br> <a class="moz-txt-link-abbreviated" href="mailto:TSBryan@aol.com">TSBryan@aol.com</a> wrote:<br> <blockquote type="cite" cite="mid:1db.471452c7.30905fcf@aol.com"> <meta content="MSHTML 6.00.2800.1498" name="GENERATOR"> <div>Thanks to the _many_ people who responded about Taylor bubbles. So I see how an eruption can take place in a simple tube. But can a sustained (that is, duration of minutes) occur without a chamber of some sort? I cannot see how.</div> <div> </div> <div>Thanks again.</div> <div> </div> <div>Scott Bryan</div> </blockquote> <br> </body> </html>