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What is this Law called? #4336005
02/21/17 06:37 PM
02/21/17 06:37 PM
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
MolaKule Offline OP
MolaKule  Offline OP
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
Name the Law and its Author from the following statement:

"The internal friction of a fluid is constant with respect to the rate of shear."

Fluids that obey this law are called " " fluids.



Let's allow newcomers and non-engineers identify this law.


Why are oil filters placed over chassis rails and cross members?
Re: What is this Law called? [Re: MolaKule] #4336020
02/21/17 06:48 PM
02/21/17 06:48 PM
Joined: Mar 2015
Posts: 5,393
Virginia
bbhero Offline
bbhero  Offline
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Virginia
Newtonian.... A shot in the dark... But it just seems like a possible answer.

Last edited by bbhero; 02/21/17 06:49 PM.

Nissan Altima 3.5 Coupe
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Re: What is this Law called? [Re: MolaKule] #4336029
02/21/17 06:59 PM
02/21/17 06:59 PM
Joined: Mar 2013
Posts: 901
NY
joegreen Offline
joegreen  Offline
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Posts: 901
NY
Can I google it. lol

Idk ill guess "dynamic"


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Re: What is this Law called? [Re: bbhero] #4336053
02/21/17 07:19 PM
02/21/17 07:19 PM
Joined: Jan 2017
Posts: 632
Melbourne, Florida
RichardS Online content
RichardS  Online Content
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Posts: 632
Melbourne, Florida
Originally Posted By: bbhero
Newtonian.... A shot in the dark... But it just seems like a possible answer.


seconded.


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Re: What is this Law called? [Re: MolaKule] #4336058
02/21/17 07:20 PM
02/21/17 07:20 PM
Joined: Mar 2016
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Western S.C.
CR94 Offline
CR94  Offline
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Western S.C.
In clearer words, I think, the shear stress is directly proportional to the rate of shear.

That's not true of fluids like blood, paint, melted ice cream, some motor oils, ...


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Re: What is this Law called? [Re: MolaKule] #4336108
02/21/17 08:03 PM
02/21/17 08:03 PM
Joined: Apr 2016
Posts: 36
Arkansas
Birdman476 Offline
Birdman476  Offline
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Posts: 36
Arkansas
Stokes Law?

Re: What is this Law called? [Re: MolaKule] #4336165
02/21/17 09:05 PM
02/21/17 09:05 PM
Joined: Mar 2004
Posts: 21,085
Upstate NY
Donald Offline
Donald  Offline
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Upstate NY
Should I ask my wife, she is a lawyer?

Re: What is this Law called? [Re: bbhero] #4336550
02/22/17 10:23 AM
02/22/17 10:23 AM
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
MolaKule Offline OP
MolaKule  Offline OP
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
Originally Posted By: bbhero
Newtonian.... A shot in the dark... But it just seems like a possible answer.


OK, you answered the second part of the question.


Now let's answer the first part:

Name the Law and its Author from the following statement:

Last edited by MolaKule; 02/22/17 10:24 AM.

Why are oil filters placed over chassis rails and cross members?
Re: What is this Law called? [Re: MolaKule] #4336585
02/22/17 11:06 AM
02/22/17 11:06 AM
Joined: Apr 2008
Posts: 37,904
Ontario, Canada
OVERKILL Offline
OVERKILL  Offline
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Ontario, Canada
Isaac Newton, Newton's Law of Viscosity. The fluid is Newtonian as bbhero noted and you have confirmed.


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Re: What is this Law called? [Re: MolaKule] #4336679
02/22/17 01:18 PM
02/22/17 01:18 PM
Joined: Mar 2015
Posts: 5,393
Virginia
bbhero Offline
bbhero  Offline
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Virginia
Well of course I knew it was Sir Isaac Newton smile I just wanted to answer the Law part of the question. The Law of viscosity I would have likely figured out.


Nissan Altima 3.5 Coupe
Mobil Super 5w30 Wix 57356
"Treat your family like your friends and treat your friends like your family."
Re: What is this Law called? [Re: MolaKule] #4337204
02/22/17 10:59 PM
02/22/17 10:59 PM
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
MolaKule Offline OP
MolaKule  Offline OP
Joined: Jun 2002
Posts: 19,478
Iowegia - USA
Good answers.

However, I asked all engineers from refraining to answer the questions.

Newtons Law of Viscosity only describes fluids that are considered "Newtonian," or fluids that are described in his law.

Common fluids such as gasses, water, Olive Oil, and mineral base oils are Newtonian.

Many other fluids are non-Newtonian and their viscosity depends on the rate of shear to which they are subjected. Greases, inks, and paints are considered non-Newtonian.

Some non-Newtonian fluids can change their viscosity with a change in both temperature and shear, and one of those is Viscosity Index Improvers (VII). However, shear-resistant VII's are the norm today. Shear resistant VII's means that even though some VII molecules may be sheared by mechanical forces, they can reform quickly.

Newton's Law of Viscosity is a Constitutive Equation and not a fundamental law of nature. In physics and engineering, a constitutive equation or constitutive relation is a relation between two physical quantities (especially kinetic quantities as related to kinematic quantities) that is specific to a material or substance, and approximates the response of that material to external stimuli, usually as applied forces. I.E., it is not a fundamental law of nature but an approximation that holds in some materials and fails in others.


Why are oil filters placed over chassis rails and cross members?
Re: What is this Law called? [Re: MolaKule] #4535775
10/06/17 08:16 PM
10/06/17 08:16 PM
Joined: Aug 2010
Posts: 1,108
pa
benjy Offline
benjy  Offline
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pa
you mean to say what i have been reading almost forever that VII's get permanently sheared to a point can "reattach" to themselves + become whole again!!


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