Le13 - ME 200 Thermodynamics I Lecture 13 Compressibility...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
ME 200: Thermodynamics I Lecture 13: Compressibility chart and factors, ideal gas model Reading: Sections 3.11-3.12; SP13, 3.100, 3.104 9/22/2010 1 ME200 Therm I Lecture 13, Prof. Mongia Professor Hukam Mongia Office Hours: MWF 9:30 to 10:30 AM in ME 83 Other times email for appointment; Phone: 765-494-5640 Course Website: https://engineering.purdue.edu/ME200/ Course Secretaries: Diana Akers (ME 84) and Marilyn Morrison (ME 100) Grader: Abhro Pal , [email protected]
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
9/22/2010 ME200 Therm I Lecture 13, Prof. Mongia 2 What is an Equation of State (EOS)? 1. A relationship between pressure, temperature and specific volume (or density) of a given pure substance (may involve other properties). Usually in form p = f ( T,v ). 2. Usually valid only under a limited range (how much?) of conditions of pressure and temperature. Why do we need equations of state? 1. Property tables provide very accurate information; but need to be measured with some reference state. Most are calculated from sophisticated equations of state. 2. Use of simple relations such as ideal gas EOS and van der Waals EOS desirable for qualitative physical understanding of fluid behavior. 3. Incorporation in numerical codes for calculation of thermodynamic properties, system performance.
Image of page 2
Ideal Gas Ideal gas is an idealized representation that has certain characteristics: No molecular volume : molecules are simply points in space. No molecular forces : molecules are on average very far apart from each other. Molecules have only elastic collisions with each other and the walls of the container which conserves linear momentum and kinetic energy. Is this possible? Not really! However, we can get very close to such behavior at very low density.
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern