Design of High-Area-Ratio Nozzle Contours Using Circular Arcs
نویسندگان
چکیده
منابع مشابه
Design of High-Area-Ratio Nozzle Contours Using Circular Arcs
b number of arc segments within curve CF thrust coefficient CF;w weighted thrust coefficient Cx nozzle length-weight coefficient E numerical error k turbulent kinetic energy, m s−2 L total contour axial length, m Ma Mach number P static pressure, Pa r radius, m TW thrust-to-weight ratio x horizontal distance, m y vertical distance, m ε turbulent dissipation rate, m s−3 θ angle, deg ω specific d...
متن کاملFitting digital curve using circular arcs
AIBtract--A smoothing procedure is proposed, where the Gaussian filter is used with an adaptive mechanism to suppress the noise effect and quantization error of a digital curve. Those points of the smoothed curve where curvature changes abruptly are detected as breakpoints. Circular arcs are suitably designed between breakpoints to fit the input curve. Experimental results indicate that our cur...
متن کاملRepresenting digraphs using intervals or circular arcs
Containment and overlap representations of digraphs are studied, with the following results. The interval containment digraphs are the digraphs of Ferrers dimension 2, and the circular-arc containment digraphs are the complements of circular-arc intersection digraphs. A poset is an interval containment poset if and only if its comparability digraph is an interval containment digraph, and a grap...
متن کاملCoupling Heat Transfer and Fluid Flow Solvers for High Area Ratio Rocket Nozzle
Turbulent flow separation coupling heat transfer with the solid case in the high area ratio rocket nozzle is simulated with the CFD method and the results are investigated experimentally. The finite volume method, the 2nd order upwind scheme, SST k-ω turbulence model and enhanced wall function are employed to solve the N-S equation and thermal conduction equation. To predict the fluid field and...
متن کاملTriangulations with Circular Arcs
An important objective in the choice of a triangulation is that the smallest angle becomes as large as possible. In the straight line case, it is known that the Delaunay triangulation is optimal in this respect. We propose and study the concept of a circular arc triangulation— a simple and effective alternative that offers flexibility for additionally enlarging small angles—and discuss its appl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Propulsion and Power
سال: 2016
ISSN: 0748-4658,1533-3876
DOI: 10.2514/1.b35640