This article focuses on the flow development and static wall pressure distribution along circular duct from convergent-divergent (CD) nozzle. The study aims to examine quality of stream in conduit when control is employed. microjets are activated at base (PCD) 13 mm, diameter 1 mm. Mach numbers investigation 1.3, 1.9, 2.4. length considered was L = 10D 1D. enlarged tube 16 experiments were cond...

For simplicity, we adopt the following convention: X is a complex unitary space, x, y, w, g, g1, g2 are points of X, z is a Complex, q, r, M are real numbers, s1, s2, s3, s4 are sequences of X, k, n, m are natural numbers, and N1 is an increasing sequence of naturals. Let us consider X, s1. We say that s1 is convergent if and only if: (Def. 1) There exists g such that for every r such that r > ...

Abstract The rotation of polarization at 90-degree domain walls in tetragonal BaTiO 3 was directly observed by the STEM-CBED method, which combines scanning transmission electron microscopy and convergent-beam diffraction (CBED). CBED patterns wall region exhibit continuous changes intensity distribution within disks specific features corresponding to direction polarization. Simulations were pe...

The papers [23], [24], [4], [5], [2], [20], [21], [9], [1], [22], [13], [15], [16], [12], [10], [11], [17], [14], [25], [3], [7], [6], [19], and [8] provide the notation and terminology for this paper. For simplicity, we adopt the following convention: X denotes a complex Banach algebra, w, z, z1, z2 denote elements of X, k, l, m, n denote natural numbers, s1, s2, s3, s, s ′ denote sequences of...

One possible method of reducing jet noise at takeoff is the use of an ejector in which the propelling nozzle discharges into a shroud and thereby induces a secondary flow. The present report describes an experiment on the aerodynamics of such systems. The primary nozzle was axisymmetric and convergent and the shrouds were cylindrical with faired convergent entries. The stagnation temperatures o...

We say A is convergent to the matrix X = [xij ] if the sequences (A )ij converge to xij as k → ∞. A matrix is convergent if it is convergent to some matrix. This is a special case of convergence as defined in [4, Definition 10.1], for the matrix sequence {A,A, A, . . . }. In particular, we say A is zero convergent when A is convergent to the zero matrix. We distinguish between convergence and z...

Adaptive evolution at the molecular level can be studied by detecting convergent and parallel evolution at the amino acid sequence level. For a set of homologous protein sequences, the ancestral amino acids at all interior nodes of the phylogenetic tree of the proteins can be statistically inferred. The amino acid sites that have experienced convergent or parallel changes on independent evoluti...