online assignment help, online homework help, economics online tutor
online assignment help, economics online tutor, online homework help submit homework for free, submit assignment for free online homework help, online assignment helponline tutor help, online live tutoring
tutor help desk about how tutorhelpdesk services work tutorhelpdesk affordable pricing sample homework, sample assignment frequently asked questions, faq contact tutorhelpdesk tutorhelpdesk blog
Login / Register

Submit HomeWork Assignment for free quote

Questions & Answers

online assignment help, online homework help
Math Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Biology Assignment Help
Biotechnology Assignment Help
Economics Assignment Help
Statistics Assignment Help
Accounting Assignment Help
Finance Assignment Help
Management Assignment Help
Operations Management Assignment Help
Computer Science Assignment Help
Engineering Assignment Help


     Variation Of Viscosity With Temperature Homework Help
     Variation Of Viscosity With Temperature Assignment Help

Variation of Viscosity With Temperature

•    Temperature affects the viscosity.

•    The viscosity of liquids decreases when the temperature increases, while the viscosity of gases increases with the increase of temperature.

•    This is due to reason that the viscous forces in a fluid are due to cohesive forces and molecular momentum transfer.

•    In liquids the cohesive forces are more important than the molecular momentum transfer, due to closely packed molecules and with the increase in temperature, the cohesive forces decrease with the result of decreasing viscosity.

•    But in gases, molecular momentum transfer is more important than the cohesive forces. Molecular momentum transfer increases with the increase in temperature and hence viscosity of a gas increases.

•    For ordinary pressure, viscosity is independent of pressure and depends upon temperature only.

•    The relation between viscosity and temperature for liquids and gases are:

(i) For liquids,    μ =  μ0 ( 1/ 1+ At + Bt2 )

where  μ = Viscosity of liquids at t0C, in poise
   μ0 = Viscosity of liquids at 00C, in poise
 A, B = Constants for the liquid

For water, μ0 = 1.79 x 10-3 poise, A = 33.68 x 10-3 and B = 22.1 X 10-3

The equation shows that with the increase of temperature, the viscosity decreases.

(ii) For gases,    μ = μ0 + αt - βt2

where for air     μ0 = 0.17 x 10-6 , α = 0.056 x 10-6, β = 0.1189 x 10-9

The equation shows that with the increase of temperature, the viscosity increases.

For more help in Variation of Viscosity With Temperature click the button below to submit your homework assignment

math homework help | physics homework help | chemistry homework help | biology homework help | economics homework help | statistics homework help | accounting homework help | finance homework help | management homework help | operations management homework help | computer science homework help | engineering homework help

Home - Contact us - Reviews - Careers - Sitemap - Terms & Conditions - Privacy Policy - Disclaimer - XML Sitemap
Copyright 2010-2015