Calculating change in volume (bulk modulus)

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SUMMARY

The discussion focuses on calculating the percentage change in volume of oil in a hydraulic system when pressure increases from zero to 3000 psi, using the bulk modulus of oil, which is 189,000 psi. The relevant equation presented is E = ∆p/(∆V)/V. A participant attempted to solve the equation but arrived at an incorrect result of -63, indicating a misunderstanding of the formula or its application.

PREREQUISITES
  • Understanding of bulk modulus and its significance in fluid mechanics.
  • Familiarity with pressure units, specifically psi (pounds per square inch).
  • Basic knowledge of calculus, particularly derivatives and their application in physics.
  • Proficiency in LaTeX for typesetting mathematical equations.
NEXT STEPS
  • Review the concept of bulk modulus and its formula for calculating volume change.
  • Study the derivation and application of the equation E = ∆p/(∆V)/V in fluid mechanics.
  • Learn how to correctly format equations in LaTeX, including the use of the increment symbol (∆).
  • Explore practical examples of hydraulic systems and the role of pressure in volume changes.
USEFUL FOR

Students studying fluid mechanics, engineers working with hydraulic systems, and anyone interested in the mathematical modeling of pressure and volume relationships in fluids.

togo
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Homework Statement


a hydraulic system operates at 3000 psi. Compute the percentage change in the volume of the oil in the system as the pressure is increased from zero to 3000 psi if the bulk modulus of the oil is 189000 psi.

Homework Equations


E=∆p/(∆V)/V

The Attempt at a Solution


189 000 psi = -3000 psi/v
=-63
which is way off.

ps. by the way is it possible to use the increment symbol (∆) in latex font?
 
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any hints?
 

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