Title page for ETD etd-12232009-020448
|Type of Document
||Fry, Richard N.
||Dense gas effects in a converging-diverging nozzle
||Master of Science
|Cramer, Mark S.
|Grossman, Bernard M.
|Ragab, Saad A.
|Date of Defense
Analytical and computational models for the solution of steady inviscid flows in
a converging-diverging nozzle are presented for a general fluid. The main emphasis
is placed on Bethe-Zel'dovich-Thompson fluids, i.e., those having specific heats so
large that the fundamental derivative of gasdynamic is negative over a finite range
of pressures and temperatures. Three general classes of flow are delineated which
include two nonclassical types in addition to the usual classical flows; the latter are
qualitatively similar to those of a perfect gas. The nonclassical flows are characterized
by isentropes containing as many as three sonic points. Numerical solutions depicting
finite strength expansion shocks, steady flows with shock waves standing upstream
. of the nozzle throat, and steady flows containing as many as three shock waves are
presented. Nonclassical flows having arbitrarily large exit Mach numbers can be
obtained only if a sonic expansion shock is formed in the nozzle.
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