Page 26 - 48Fundamentals of Compressible Fluid Mechanics

xxvi CONTENTS
8
This textbook has sections which are cutting edge research .
The additions of this version focus mainly on the oblique shock and re-
lated issues as results of questions and reactions on this topic. However, most
readers reached to www.potto.org by searching for either terms “Rayleigh flow”
(107) and “Fanno flow” ((93). If the total combined variation search of terms
“Fanno” and “Rayleigh” (mostly through google) is accounted, it reaches to about
30% (2011). This indicates that these topics are highly is demanded and not many
concerned with the shock phenomena as this author believed and expected. Thus,
most additions of the next version will be concentrated on Fanno flow and Rayleigh
flow. The only exception is the addition to Taylor–Maccoll flow (axisymmetricale
conical flow) in Prandtl -Meyer function (currently in a note form).
Furthermore, the questions that appear on the net will guide this author
on what is really need to be in a compressible flow book. At this time, several
questions were about compressibility factor and two phase flow in Fanno flow and
other kind of flow models. The other questions that appeared related two phase
and connecting several chambers to each other. Also, an individual asked whether
this author intended to write about the unsteady section, and hopefully it will be
near future.

0.3 Version 0.4
Since the last version (0.3) several individuals sent me remarks and suggestions.
In the introductory chapter, extensive description of the compressible flow history
was written. In the chapter on speed of sound, the two phase aspects were added.
The isothermal nozzle was combined with the isentropic chapter. Some examples
were added to the normal shock chapter. The fifth chapter deals now with normal
shock in variable area ducts. The sixth chapter deals with external forces fields.
The chapter about oblique shock was added and it contains the analytical solution.
At this stage, the connection between Prandtl–Meyer flow and oblique is an note
form. The a brief chapter on Prandtl–Meyer flow was added.

0.4 Version 0.3
In the traditional class of compressible flow it is assumed that the students will be
aerospace engineers or dealing mostly with construction of airplanes and turbo-
machinery. This premise should not be assumed. This assumption drives students
from other fields away from this knowledge. This knowledge should be spread to
other fields because it needed there as well. This “rejection” is especially true when
students feel that they have to go through a “shock wave” in their understanding.
This book is the second book in the series of POTTO project books.
POTTO project books are open content textbooks. The reason the topic of Com-

8 A reader asked this author to examine a paper on Triple Shock Entropy Theorem and Its Conse-
quences by Le Roy F. Henderson and Ralph Menikoff. This led to comparison between maximum to
ideal gas model to more general model.