An experimental study on the effect of coaxial circular disk obstacle on helium jet distribution inside the unventilated enclosure of AIHMS facility

A numerical and experimental study, in the preliminary stages, has been conducted examining the effect of swirling flow on the natural convective heat transfer rate from a flat, horizontal, heated, upward facing, isothermal circular disk surrounded by insulation.

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AN EXPERIMENTAL STUDY AND FINITE ELEMENT ANALYSIS OF CIRCULAR DISK SHAPE OF SMC

International Journal of Modern Physics B ◽

10.1142/s0217979210065283 ◽

2010 ◽

Vol 24 (15n16) ◽

pp. 2573-2578

Author(s):

CHANG-MIN SUH ◽

SEONG-YOUN KIM ◽

KYUNG-RYUL KIM

Keyword(s):

Finite Element Analysis ◽

Experimental Study ◽

Finite Element ◽

Maximum Stress ◽

Circular Disk ◽

Load Test ◽

Static Load Test ◽

Creep Tests ◽

Element Analysis ◽

Molded Parts

An experimental study on material characterization of SMC (Sheet Molding Compounds) compression molded parts was carried out by 3-point bending tests and creep tests. And computer simulation of optimum condition of SMC design was carried out by finite element analysis. The thicknesses of SMC specimen were 6.5, 7, 7.5 and 8mm and the angles of inclination were 0°, 2.5°, 5°, 7.5° and 10°. After static load test, the stress of SMC was different at the each condition. The influence of angles of inclination was important. The maximum stress occurred at 0°. But the more angle of inclination was big, the more maximum stress was small. The decrement was big at the range of 0° to 2.5°. The influence of thicknesses also was important. The more thickness was large, the more maximum stress was small.

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Experimental Study of a Starting Vortex Ring Generated by a Thin Circular Disk

Journal of Bionic Engineering ◽

10.1016/s1672-6529(09)60223-7 ◽

2010 ◽

Vol 7 (S4) ◽

pp. S103-S108 ◽

Cited By ~ 3

Author(s):

Anlong Yang ◽

Laibing Jia ◽

Xiezhen Yin

Keyword(s):

Experimental Study ◽

Vortex Ring ◽

Circular Disk

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Passively Enhanced Natural Convection Heat Transfer via Swirl Effect

10.32920/ryerson.14635692 ◽

2021 ◽

Author(s):

L. Di Liddo ◽

D. Naylor

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

Natural Convection ◽

Convective Heat Transfer ◽

Transfer Rate ◽

Swirling Flow ◽

Convection Heat Transfer ◽

Circular Disk ◽

Natural Convection Heat Transfer ◽

Convection Heat

A numerical and experimental study, in the preliminary stages, has been conducted examining the effect of swirling flow on the natural convective heat transfer rate from a flat, horizontal, heated, upward facing, isothermal circular disk surrounded by insulation.

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Analysis of Turbulent Scales in Variable Density Jets Using Laser Anemometry Techniques

Volume 2: Symposia and General Papers, Parts A and B ◽

10.1115/fedsm2002-31161 ◽

2002 ◽

Author(s):

S. Boujemaa ◽

M. Amielh ◽

A. Gharbi ◽

F. Anselmet

Keyword(s):

Experimental Study ◽

Variable Density ◽

Turbulent Jet ◽

Mixing Process ◽

Integral Scale ◽

Development Zone ◽

Laser Anemometry ◽

Air Jet ◽

Helium Jet ◽

Turbulent Scales

This experimental study is concerned with the effect of density variations on the development of a turbulent jet. Our interest concerns the large turbulent scales in order to understand how density variations affect these structures involved in the mixing process. The integral scale evolutions are estimated from laser velocimetry measurements (PIV or LDV). Comparisons between the results obtained in an air jet and a helium jet are given in the development zone (X/Dj < 20), so that the effect of strong density variations (ratio 1 to 7) on these scales is deduced.

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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