نتایج جستجو برای: hypersonic flows
تعداد نتایج: 81511 فیلتر نتایج به سال:
<p style="text-indent:20px;">We study steady uniform hypersonic-limit Euler flows passing a finite cylindrically symmetric conical body in the Euclidean space <inline-formula><tex-math id="M1">\begin{document}$ \mathbb{R}^3 $\end{document}</tex-math></inline-formula>, and its interaction with downstream static gas lying behind tail of body. Motivated by Newton's th...
A stabilized finite element framework for high-speed compressible flows is presented. The Streamline-Upwind/Petrov–Galerkin formulation augmented with discontinuity-capturing (DC) are the main constituents of that enable accurate, efficient, and stable simulations in this flow regime. Full- reduced-energy formulations employed class problems their relative accuracy assessed. In addition, a rece...
The paper gives experimental observations on the hypersonic flow past an axisymmetric flat-face cylinder with a protruding sharp-tip spike at freestream Mach number of $M_\infty = 8.16$ two different Reynolds numbers based base body diameter ($Re_D 0.76 \times 10^6$, and $3.05 10^6$). Furthermore, modal analysis is done schlieren images to understand dynamics parallel unsteady pressure measurem...
The study of hypersonic flows and their underlying aerothermochemical reactions is particularly important in the design analysis vehicles exiting reentering Earth's atmosphere. Computational physics codes can be employed to simulate these phenomena; however, verification necessary certify credibility. To date, few approaches have been presented for verifying that flows, especially reacting ther...
The curved bow shock in hypersonic flow over a blunt body generates a shear layer with smoothly distributed vorticity. The vorticity magnitude is approximately proportional to the density ratio across the shock, which may be very large in hypervelocity flow, making the shear layer unstable. A computational study of the instability reveals that two distinct nonlinear growth mechanisms occur in s...
A Solution Adaptive Grid Method for Calculation of High Speed Flows around Blunt Body Configurations
Extension of a solution adaptive grid method to hypersonic flows is presented. Fully unstructured triangular grids are generated in an automatic manner and further refined by adapting to the flow features. Two-dimensional inviscid flow is simulated by numerical solution of Euler equations. A cell-centered finitevolume scheme is used and the steady state solution is obtained using an explicit mu...
The Direct Simulation Monte-Carlo technique (DSMC) is used for numerical analysis of rarefied-gas hypersonic flows near a blunt plate, wedge, two side-by-side plates and cylinders, sphere, torus, and rotating cylinder. Important kinetic effects that are specific for the transition flow regime have been found: nonmonotonic lift of plates, strong repulsive force between side-by-side plates and cy...
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