词汇 | planform |
释义 | BETA Examples of planformplanform isn’t in the Cambridge Dictionary yet. You can help! This paper reports an attempt t o establish the planform of salt finger cells, produced in water with sugar and salt as the solutes. The flow appears t o be seeking a smaller hexagonal planform but is unable to make the transition. Thus, the stable planform in three-dimensional convection is sensitive to the size of the rectangular domain and the initial conditions. Indeed, i t appears that differences in initial conditions are important in planform selection. In addition, the channels developed an element of planform sinuosity due to the fact that the sidewalls were erodible. To this purpose, consider a three-dimensional wing with rectangular planform moving at constant speed in an otherwise quiescent incompressible fluid. Criteria for the stability of convection with banded or square planform are determined and results are presented for two-layer and symmetric three-layer systems. Then the fluid convects into cells of polygonal planform-that is, the flow is periodic in both of the horizontd directions. Extent of the (shaded) region depends on pitch-axis location and planform. The sensitivity of heat transfer to planform variations is less than 10%. Two surfaces were employed, one of square planform (8.9cm side) and the second of circular planform (8.7 cm diameter). It is the primary task of this paper to determine the preferred planform of convection near onset, thereby validating and extending the above results. The wing has arbitrary planform, thickness distribution and warp, and is arbitrarily mounted on the fuselage. The basic principle for the subdivisions is illustrated in 9 6 for a simple planform with straight edges. Our aim is not simply to display these patterns but rather to explain the sequences of transitions that lead from one planform to another and from order into chaos. From the domains of integration for these new integrals, the boundaries of the disturbed regions behind the shock can be defined directly from the planform of the wing. For wings designed for high-speed flight, the planform can be decomposed to several triangles and the inclination of the surface in each triangle is a constant. Although visual observations were made both for the circular and the square planforms, flow patterns were photographed only for the square planform since it facilitated a sharper focus. |
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