نتایج جستجو برای: expansion flow
تعداد نتایج: 615348 فیلتر نتایج به سال:
Energy spectra for intermediate mass fragments produced in central Au + Au collisions at E/A = 100 MeV indicate a collective expansion at breakup. For the first time, values for this collective expansion energy per nucleon are extracted independently for each charge. Typically, these values are one-third to one-half of the incident kinetic energy per nucleon in the c.m. system, but they decreas...
The method of matched asymptotic expansions, which has been used in previous studies of steady natural convection flow, is extended here to transient natural convection flow at high Prandtl number (Pr). Second-order expansion solutions, valid for large Prandtl numbers, are presented for the transient natural convection flow near a vertical surface which undergoes a step change in temperature. T...
flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...
A systematic loop expansion is formulated in terms of full propagators and vertices. It is based on an expansion of the general solution of an exact non-perturbative flow equation.
In previous papers it has been shown how it is possible to sense fragmentary motion and local edge orientation to a high accuracy, directly from illuminance gradient data present in pairs of frames from a time sequence. It has also been suggested how such data may be used to generate optic flow maps. The present paper looks at the practicability of generating such optic flow maps and at the pos...
We measured psychophysical thresholds for the detection of four different optic flow components in the presence of a translational velocity. We also measured thresholds for detection of rotation in the presence of expansion and for expansion in the presence of rotation. Our stimuli consisted of sparse random dot patterns. Detection thresholds are similar for all four optic flow components. Thus...
We study the linear map, AZ(p) : TpE 2 → TpE associated with the linearization of a planar flow with tangent vector field Z. A quadratic form constructed from this map contains information about the expansion of the flow in an arbitrary direction and its eigenvectors represent directions of maximum and minimum expansion. A second quadratic form provides information about the rotation of the flo...
response to volume expansion with 2 L of isotonic saline infused over 60 min was then studied. Peak rate of sodium excretion after saline loading was 994 + 186 yLEq/min in the renin-unresponsive group and peak urine flow was 11.9 + 2.1 ml/min. In the renin-responsive hypertensives peak sodium excretion was 448 + 149 ,uEq/min and peak uline flow was 5.4 1.5 ml/min. Both the sodium excretion and ...
A development vision system is described in this paper. It contains an ALTERA FPGA (20K100), an interface with a digital camera, three VRAM memories to contain the data input and some output memories (a VRAM and a EDO) to contain the results. The aim of this system is to develop and test vision algorithms, such as image compression, optical flow calculation with differential and correlation met...
Micromixer is a significant component of microfluidics particularly in lab-on-chip applications so that there has been a growing need for design and fabrication of micromixers with a shorter length and higher efficiency. Despite most of the passive micromixers that suffer from long mixing path and complicated geometry to increase the efficiency, our novel design suggests a highly efficient micr...
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