Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: [Phys-l] question about Bernoulli

Certainly the density is lower. But the gas is flowing through much faster, so more molecules in a given time will pass a given area of wall and exert more pressure (hit the wall more often) than a stationary gas of the same reduced density. So which effect dominates?

I think the spirit in which Bill asked the question requires a conceptual, non-mathematical answer.

Bob at PC

-----Original Message-----
From: phys-l-bounces@carnot.physics.buffalo.edu [mailto:phys-l-
bounces@carnot.physics.buffalo.edu] On Behalf Of John Mallinckrodt
Sent: Tuesday, November 23, 2010 4:53 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] question about Bernoulli


2. The pressure reduction in high velocity areas is mostly a direct
result of lower density (less "squeezing") and only partially a result
of smaller average velocities (due to the temperature reduction that
accompanies the barotropic density reduction)

ailman/listinfo/phys-l