On Tue, 23 Mar 2010, John Peterson wrote:

> On Tue, Mar 23, 2010 at 2:41 PM, Roy Stogner <[email protected]> wrote:
>
>> You're right that it's a lower-order element; I don't recall what the
>> advantage over P1/P0 is supposed to be.
>
> P1/P0 is not LBB-stable.  Gresho & Sani also say "sometimes locks" and
> "rarely, if ever, usable."  Ouch.

Gah!  I must be slipping.  I could have sworn there was an LBB-stable
way of using discontinuous constants for pressure without adding any
stabilization term.  Q1/P0??
---
Roy

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