ISSN:
1432-2153
Keywords:
High-temperature equilibrium flow
;
Real gas effect
;
Shock wave structures
;
TVD numerical simulation
;
Underexpanded supersonic jet
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
,
Technology
Notes:
Abstract The flow structure of an underexpanded supersonic jet with high reservoir temperature impinging on a flat plate has been numerically investigated using a Total Variation Diminishing (TVD) scheme. When the temperature of the flow field is high enough to cause chemical reaction, the specific heat ratio,γ, is no longer equal to 1.4, nor constant. This explains the difference found in the literature between the flow properties of the calorically perfect gas and that of the chemically reacting flow. Under the equilibrium flow assumption the effect of high temperature gas on the impinging jet has been taken into account in the present paper by using specific heat ratio and speed of sound given by correlation polynomials of thermodynamic variables. The limiting case of cold jet calculation in the present numerical results agreed well with the existing experimental data. For the equilibrium jet with high reservoir temperature,T o=1000K, qualitative support of the present result has been provided by means of the approximation theory.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01417431
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