Re: Scientific Errors (Proof)



blair.houghton@xxxxxxxxx wrote:
Dennis B wrote:
To further prove that a fluid exerts an increased force of pressure as
the velocity of the fluid increases, take for example a water powered
piston. Water is an incompressible fluid and therefore cannot (easily)
change in density. Therefore, as the water enters the piston, most of
the force of the fluid is then translated into moving the piston. If the
flow of water into the piston is increased (in other words if the fluid
velocity is increased) the water exerts a greater force or pressure upon
the piston, does it not?

It does not. In general, when trying to get a greater force into
such a volume, it is necessary to increase the volume more slowly.

TEll that to racecar engineers and they'l laugh you off of the
racetrack. There is some truth in what you say though in that a lower
velocity is more efficient at transfering force because a higher
velocity results in higher viscous head or friction losses. And by the
way, how do you get more force at a lower volume? I would imagine by
using a large pump with a piston having a large surface area?

Same thing happens when you want to increase leverage. You can't
raise an object as fast, but you can raise a heavier object.
Same
thing
happens when trying to impart knowledge to a denser skull. Speak
slowly. Speak clearly. Repeat the idea several times, a little
different
each time.

Conversely, only when water is withdrawn from
the piston does the force of pressure decrease, in which case the water
and the piston move in the opposite direction. SUCK ON THAT all you
adherents of the Bernoulli Principle myth!

How can you believe that it's a myth when it's clear that you have
no experience with the data?

I know enough to see that there are some obvious errors in the existing
theories. As for the accusation that I have no experience with the
data, you are very mistaken. I know what the observed facts are. I have
a basic understanding of the processes involved. Not to say I haven't
much yet to learn. Learning never ends. Yet, I have a right to speak my
mind. And I call it as I see it.

How can you speak about it in any
way when it's clear that you have never actually read the statement
of the theorem?


You are making false accusations. I am VERY familar with Bernoulli's
principle. My understanding is internally consistent. Yours is not.
Your beliefs violate the conservation of momentum and energy laws, the
fundamental laws of motion (ma = F), *AND* doe not agree with observed
phenomena. If pressure decreased as velocity increased, there would not
be any increase in friction loss. In other words, there would be no
friction. Of course, Bernoulli's equation does not apply to viscous
fluids such as air or water and therefore does not include friction in
it's pure form. This is not because there are no friction losses with a
viscous fluid. It's because Bernoulli's principle applies only to
inviscid fluids. In other words it only applies to super-fluids.
Therefore, one could rightly call Bernoulli's principle a myth (with a
seed of truth in it), although my original point was that Bernoulli's
principle as it is COMMONLY taught (being used to explain the function
of an airplane wing) is a myth.

In the steady state - constant velocity - if the external load is
constant, the pressure in the piston is the same whether you
are increasing or decreasing the volume. There will only be an
increase or decrease in the transient phase, when the velocity
is changing. And the assumed conditions for Bernoulli's principle
do not apply to transients.

I hesitate to say this because I know it will blow your tiny, ossified
mind, but, because of Bernoulli's principle, in the steady, nonzero-
velocity state, the pressure in the feed tube for the piston is lower
than the pressure in the piston body - no matter which direction
the piston is moving.

But wait! you say. How can I start it moving without increasing
the force on the distal end of the feed tube? Increasing the force
must increase the pressure! Well, it does. But that's the transient
phase. By the time the transients end and the steady state is
reached, the boundary condition for the pressures has changed
from equal pressure in both places to a lower pressure in the
feed tube. In the case of a perfectly incompressible fluid, this
transition takes zero time. Real fluids aren't incompressible, but
they're close. So what happens is huge shockwaves transit the
system. And we've discovered the property of "water hammer".

I'll say it again (for reasons I've outlined above): when the
piston is moving in the steady state, the pressure in
the feed tube is lower than the pressure in the piston, no
matter which direction it is moving. Bernoulli applies.


I presume this is because of inertia in the piston? It keeps the piston
going even though the fluid flow from the feed tube has stopped? I
don't see how that's related to the basic fluid dynamics. I get the
impression you are simply attempting to discredit me. You try to make
it look like I've made more errors than I have. Perhaps you don't
understand what I've said (I certainly don't understand *your* vague
and meaningless, dare I say fictitious, explanations). Perhaps you are
one of the many individuals whom I've heard about that are actually
employed to discredit individuals whom pose a threat to the powers that
be (Energy cartel, etc.) through the accurate scientific knowledge they
have to share via USENET? After all, it only takes a few responses such
as yours and the others to strip an individual of any credibility in
the eyes of those whom do not take the time or do not have the ability
to discern between fact and fiction (either due to having been
brainwashed by the church of "science" or lack of mental abilty). Alas,
I care not...because I know there are people whom will recognise the
truth of what I have to say. The challenge you pose only serves to help
me build a stronger and more stable foundation for what is yet to
unfold. And I assure the show hasn't even started yet. I suggest you
and everyone else get a tight grip while you are still able...because
the world, as you know it, is about to come to an end.

Now you have a choice. You can continue to posit nonsense
and get it batted out of the park and feel like a loser;
I don't feel like a loser at all. In fact I get a natural high from
these debates. I actually feel like a winner because I know who's right
and who's wrong, despite the fact that I have apparently failed thus
far in my ultimate objective which is to open your eyes.

or,
you can ask questions when your scientific beliefs do not match
what all the other scientists think, have your misunderstanding
explained to you, and feel like a decent person.


If only the other scientists could actually explain to me the error of
my beliefs. Of course, how could they. Their "logic" is not internallly
consistent. They've all been "brainwashed" with manufactured insanity
as far as I am concerned. It's no wonder human "civilisation" has yet
to conquer the heavens.

-Dennis B

.

Relevant Pages

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  • Re: Scientific Errors
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  • Re: Scientific Errors (Proof)
    ... Water is an incompressible fluid and therefore cannot ... Therefore, as the water enters the piston, most of ... velocity is increased) the water exerts a greater force or pressure upon ...
    (sci.physics)
  • Re: Scientific Errors (Proof)
    ... Water is an incompressible fluid and therefore cannot ... Therefore, as the water enters the piston, most of ... velocity is increased) the water exerts a greater force or pressure upon ...
    (sci.physics)