scholarly journals Two-dimensional velocity measurement in straight rectangular cross section pipe flow by using laser speckle photogrphy.

1988 ◽  
Vol 8 (30) ◽  
pp. 373-376
Author(s):  
Takao KASHIWAGI ◽  
Naoya KAWAGUCHI ◽  
Akira NARUMI ◽  
Shohachi YASU
Keyword(s):  
Cross Section ◽  
Pipe Flow ◽  
Velocity Measurement ◽  
Rectangular Cross Section ◽  
Laser Speckle ◽  
Two Dimensional

Mean Flow Downstream of Two-Dimensional Roughness Elements

1989 ◽  
Vol 111 (2) ◽  
pp. 149-153 ◽  
Author(s):  
E. Logan ◽  
P. Phataraphruk
Keyword(s):  
Reynolds Number ◽  
Cross Section ◽  
Pipe Flow ◽  
Rectangular Cross Section ◽  
Roughness Element ◽  
Two Dimensional ◽  
Hot Wire ◽  
Mean Flow ◽  
Roughness Elements ◽  
Three Stages

The response of a fully developed pipe flow to wall mounted roughness elements of rectangular cross section was investigated experimentally using a probe with a single hot-wire. Four heights of rectangular, ring-type elements were installed rigidly in a 63.5-mm diameter, smooth-walled, circular pipe in which air was flowing at a Reynolds number of 50,000. After passing over the roughness element, the flow recovery occurred in three stages. The three flow regions are delineated, and the velocity profiles for each are correlated.

scholarly journals On an approximate solution for the bending of a beam of rectangular cross-section under any system of load, with special reference to points of concentrated or discontinuous loading

1902 ◽  
Vol 70 (459-466) ◽  
pp. 491-496
Keyword(s):  
Approximate Solution ◽  
Special Reference ◽  
Cross Section ◽  
Rectangular Cross Section ◽  
Elastic Equilibrium ◽  
Elastic Solid ◽  
Two Dimensions ◽  
Two Dimensional ◽  
Applied Stresses

The paper investigates the elastic equilibrium of a long bar of rectangular cross-section in those cases where the problem may be treated as one of two dimensions, namely:— ( a .) When the strain being in the plane of xy , the elastic solid extends indefinitely in the direction of the applied stresses over the bounding planes y = ± b , x = ± a being the same for any two sections parallel to the plane of xy . We then have a strictly two-dimensional strain.

Diffusion in oscillatory pipe flow

1983 ◽  
Vol 133 ◽  
pp. 233-244 ◽  
Author(s):  
E. J. Watson
Keyword(s):  
Mass Transfer ◽  
Cross Section ◽  
Pipe Flow ◽  
Oscillatory Motion ◽  
Circular Pipe ◽  
Two Dimensional ◽  
Ambient Fluid ◽  
Fast Oscillations

The rate of mass transfer of a diffusing substance along a pipe is augmented by an oscillatory motion of the ambient fluid in the pipe. The increase of the flux is evaluated for the cases of a circular pipe and of a two-dimensional channel. Results are given for a general cross-section in the limiting cases of slow and fast oscillations of the flow.

Numerical simulation of pulsed plasma sheath dynamics around a micro-sized tip

2013 ◽  
Vol 79 (5) ◽  
pp. 759-764
Author(s):  
H. GHOMI ◽  
A. MAHMOODPOOR ◽  
H. GOUDARZI ◽  
A. R. NIKNAM
Keyword(s):  
Cross Section ◽  
Temporal Evolution ◽  
Fluid Model ◽  
Rectangular Cross Section ◽  
Early Time ◽  
Plasma Sheath ◽  
Two Dimensional ◽  
Pulsed Plasma ◽  
Ion Density ◽  
Density Distributions

AbstractIn this paper the spatial and temporal evolution of pulsed plasma sheath around a micropatterned surface is investigated using two-dimensional fluid model. The simulation region is considered as a micro-sized tip with rectangular cross section. The effects of rise time on electric field, ion density distributions, and dose of ions impacting the target are studied. It is shown that the plasma sheath has a balloon-like behavior in the early time stages.

Aerodynamic Throttling of a Two-Dimensional Flow by a Thick Jet

1976 ◽  
Vol 27 (3) ◽  
pp. 229-242 ◽  
Author(s):  
J B Stek ◽  
H Brandt
Keyword(s):  
Cross Section ◽  
Rectangular Cross Section ◽  
Maximum Height ◽  
Pressure Measurements ◽  
Two Dimensional ◽  
Pressure Distributions ◽  
Air Jet ◽  
Two Dimensional Flow ◽  
Made In

SummaryThe velocity and pressure distributions in a flow generated by a thick air jet that throttles a confined airstream have been studied analytically and experimentally. Velocity and pressure measurements were made in a duct with a rectangular cross section of 102 mm height and 19 mm depth, through which air flowed at velocities ranging from 65 to 80 m/s. The airstream was throttled by a thick air jet having velocities ranging from 130 to 150 m/s that entered the mainstream at angles ranging from 60° to 135°. The jet-mainstream contour was found to be elliptical and agreement within six per cent was obtained between the theoretically and experimentally determined maximum height of the contour. Jet spreading was found to be linear. The theory permits determination of the velocity profile in the jet and gives velocities that deviate less than ten per cent from values obtained experimentally.

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