Hypersonic laminar flow over a canonical 25°–55° double cone is studied using computational fluid dynamics and global stability analysis (GSA) with free-stream Mach number of 11.5 various unit Reynolds numbers. Axisymmetric simulations reveal that secondary separation occurs beneath the primary bubble beyond critical number. The numerical results agree well existing experiments triple-deck theo...

This paper introduces a supersonic Korean morphological analyzer named MACH. It analyzes a 1 GB document within 5 minutes on a typical personal computer with a 1 GHz Pentium III CPU. This means that it analyzes about 500,000 words per second. In fact, the analysis speed of MACH is 12-20 times faster than the most famous Korean morphological analyzers. In spite of its supersonic speed, the analy...

Citation: Aversa L, Taioli S, Nardi MV, Tatti R, Verucchi R and Iannotta S (2015) The interaction of C60 on Si(111) 7×7 studied by supersonic molecular beams: interplay between precursor kinetic energy and substrate temperature in surface activated processes. Front. Mater. 2:46. doi: 10.3389/fmats.2015.00046 The interaction of C60 on Si(111) 7×7 studied by supersonic molecular beams: interplay ...

Integrated properties of solutions of the wave equation with non-planar boundaries are found and applied to three dimensional supersonic flow problems and two dimensional diffraction problems. For the problem of supersonic flow outside a cylindrical surface with generators parallel to the flow direction, a theorem is proved concerning the integrated properties of the linearized pressure distrib...

Conical shock waves are generated as sharp conical solid projectiles fly supersonically in the air. We study such conical shock waves in steady supersonic flow using isentropic Euler system. The stability of such attached conical shock waves for non-symmetrical conical projectile and non-uniform incoming supersonic flow are established. Meanwhile, the existence of the solution to the Euler syst...

Cold carbon cluster negative ions are formed by supersonic expansion of a plasma created at the nozzle of a supersonic cluster beam source by an excimer laser pulse. The observed distribution of mass peaks for the Cn ions for n > 40 demonstrates that the evidence previously given for the special stability of neutral C eo and the existence of spheroidal carbon shells cannot be an artifact of the...

Some tests with trapped vortices in supersonic flow-by-SUMMARY An arrangement known briefly as a vortex bearing, or trapped vortex, is described. This was devised initially with the object of improving supersonic air intakes featuring internal compression and focussing of the compression waves at the throat, Tests were made with simple rigs to check various aspects of the performance of such vo...

D of point P in a meridian plane for an accelerating, decelerating and accelerating supersonic speed starting from rest at = 0. The subsonic and supersonic intervals are 0; 1) and (1; 5] with the deceleration in (1:7; 3:05). The critical curve J has a local maximum at point K 1 , a minimum at K 2 and then a maximum at K 3. The curve J partitions D into

We consider the motion of a quasi-one-dimensional beam of Bose-Einstein condensed particles in a disordered region of finite extent. Interaction effects lead to the appearance of two distinct regions of stationary flow. One is subsonic and corresponds to superfluid motion. The other one is supersonic and dissipative and shows Anderson localization. We compute analytically the interaction-depend...