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A set of compressible flow relations describing flow properties across oblique shock waves, derived for a thermally perfect, calorically imperfect gas, is applied within the existing thermally perfect gas (TPG) computer code. The relations are based upon the specific heat expressed as a polynomial function of temperature. The updated code produces

Autor: NASA Technical Reports Server (NTRS)

Fuente: https://archive.org/


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AIAA-97-0868 Computation of Thermally Perfect Oblique Shock Wave Properties Kenneth E.
Tatum Lockheed Martin Engineering & Sciences, Hampton, VA 35th Aerospace Sciences Meeting & Exhibit January 6-10, 1997 - Reno, NV AIAA-97-0868 Computation of Thermally Perfect Oblique Shock Wave Properties Kenneth E.
Tatum* Lockheed Martin Engineering & Sciences Hampton, Virginia Summary u A set of compressible flow relations describing flow properties across oblique shock waves, derived for a thermally perfect, calorically imperfect gas, is applied within the existing thermally perfect gas (TPG) computer code.
The relations are based upon the specific heat expressed as a polynomial function of temperature.
The updated code produces tables of compressible flow properties of oblique shock waves, as well as the original properties of normal shock waves and basic isentropic flow, in a format similar to the tables for normal shock waves found in NACA Rep.
1135.
The code results are validated in both the calorically perfect and the calorically imperfect, thermally perfect temperature regimes through comparisons with the theoretical methods of NACA Rep.
1135.
The advantages of the TPG code for oblique shock wave calculations, as well as for the properties of isentropic flow and normal shock waves, are its ease of use and its applicability to any type of gas (monatomic, diatomic, triatomic, polyatomic, or any specified mixture thereof). V w Y z γ δ Θ µ ρ σ Subscripts: 1 upstream flow reference point; e.g., upstream of a shock wave 2 downstream flow reference point; e.g., downstream of a shock wave i ith component gas species of mixture lim limiting conditions for oblique shock waves max maximum value mix gas mixture n total number of gas species that comprise a gas mixture perf calorically perfect therm thermally perfect t total (stagnation) conditions Abbreviations: Nomenclature Symbols: a A speed of sound cross-sectional area of stream tube or channel coefficients of p...





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