Specific Heats for Incompressible Fluids

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Homework Help Overview

The discussion revolves around the concept of specific heats for incompressible fluids, particularly focusing on the relationship between specific heat at constant pressure (Cp) and specific heat at constant volume (Cv). The original poster questions the validity of the equation Cp = Cv + R in the context of incompressible fluids, where R is noted to be zero.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to reconcile the equation Cp = Cv + R with the assertion that Cp = Cv for incompressible fluids. Some participants seek clarification on how specific heat values are determined for incompressible fluids, indicating a need for further exploration of the topic.

Discussion Status

The discussion is ongoing, with some participants expressing uncertainty about the determination of specific heat for incompressible fluids. There is a request for explanations regarding the original poster's insights, suggesting that further elaboration is needed to clarify the concepts involved.

Contextual Notes

Participants note that specific heat values are typically provided in problem statements or reference materials, which may influence their understanding of the topic.

Spectre5
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Given the following equation:

Cp = Cv + R

Where Cp is specific heat (constant pressure), Cv is specific heat (constant volume), and R is the universal gas constant.

However, my book states that for an incompressible fluid, Cp = Cv.

How can this be the case given the above equation? R is a constant for any given fluid, so why is is zero for an incompressible fluid?
 
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Nevermind, I think I figured it out
 
Can you explain to me what you figured out then (or someone)?
I don't understand how the specific heat for an ICL is supposed to be determined.
 
Elbobo said:
Can you explain to me what you figured out then (or someone)?
I don't understand how the specific heat for an ICL is supposed to be determined.
The specific heat is usually provided for you in the problem statement, or in a table somewhere in the textbook.
 

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