Water Poisson Ratio: What & How?

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SUMMARY

The discussion centers on the applicability of Poisson's ratio to fluids, specifically water. It is established that Poisson's ratio can be calculated using the bulk modulus (K) and shear modulus (G) of a material. In the case of water, the significant disparity between K and G implies that defining a Poisson's ratio is not straightforward. The conclusion is that while Poisson's ratio can theoretically be defined for water, practical implications render it less meaningful.

PREREQUISITES
  • Understanding of Poisson's ratio
  • Knowledge of bulk modulus (K) and shear modulus (G)
  • Familiarity with fluid mechanics
  • Basic principles of material science
NEXT STEPS
  • Research the relationship between bulk modulus and shear modulus in fluids
  • Explore the implications of Poisson's ratio in different materials
  • Study fluid mechanics principles related to elasticity
  • Investigate alternative measures of fluid behavior under stress
USEFUL FOR

Students and professionals in material science, fluid mechanics, and engineering disciplines who seek to understand the mechanical properties of fluids like water.

b_javidsharif
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hello everybody. can we define a poisson ratio for fluids, eg for water?? if no, why? n if yes, how?? thnx.
 
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Hi b_javidsharif, welcome to PF! For homework-type questions (not that this is necessarily homework), we ask that you give your line of reasoning first, then you'll likely get useful comments.

Poisson's ratio can be calculated if you know the bulk modulus K and the shear modulus G of the material. In water, is one of these much greater than the other? What does this imply about the Poisson's ratio?
 

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