CH 342/Spring 2002 April 15, 2002
Study Guide 3
For the following, when a question asks how something is determined, it means how would it be
established in an experiment, how would it be calculated using its defining equation, or how would
it be used in its defining equation or otherrelated equations.
General
Know how to work the homework problems backward and forward. Review similar exercises and
problems in the textbook to those given as homework assignments. Review all example problems
in the textbook. Be prepared to answer short essay questions (with a few sentences) and to do prob-
lems involving numerical calculations with the equations given. Be prepared to perform general
derivations using algebraic manipulations of formulations and principles in calculus (differentia-
tion, partial differentiation, and integration).
Chapter 1.3: Gas Dynamics
What is the kinetic model of gases? What assumptions are used in its derivation?
Given a distribution of speeds f
(
v
)
, how are the mean, rms, and most probablespeeds of calculated
mathematically?
What is the meaning of the relative speed? How is it determined for a pure gas? How is it deter-
mined for two dissimilar gas molecules?
How are the mean, rms, and most probable speeds affected by pressure, temperature, and molar
mass of a gas?
What is the shape of the Maxwell distribution of speeds at different temperatures for different
gas molecules? What do the mean, rms, and most probable speeds of molecules represent on the
distribution?
What is the physical significance of collision frequency and mean free path? How are they affected
by pressure, temperature, and molar mass of a gas?
Chapter 24: Gas Transport Process
What is the significance of collision flux? How is it affected by pressure, temperature, and molar
mass of a gas?
What are the three transport coefficients of a fluid? What are their typical SI or other units? What
are the typical orders of magnitudes of transport coefficients for gases? How are they affected by
pressure, temperature, and molar mass of a gas?
What does the Poiseuille’s formula provide? How do the parameters of pressure, tube diameter,
and viscosity enter in the formula? How is volumetric flow affected by these parameters?
