Experimental Investigation of the Flow Pattern and Wall Pressure Distribution in a Silo with a Double-Cone Insert

2007 ◽  
Vol 24 (4-5) ◽  
pp. 296-303 ◽  
Author(s):  
Michał Wójcik ◽  
Johannes Härtl ◽  
Jin Y. Ooi ◽  
Michael Rotter ◽  
Songxiong Ding ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Pressure Distribution ◽  
Flow Pattern ◽  
Wall Pressure ◽  
Double Cone

scholarly journals Effect of using insert on the flow pressure in cylindrical silo

2019 ◽  
Vol 41 (4) ◽  
pp. 177-183 ◽  
Author(s):  
Hala Hammadeh ◽  
Farzat Askifi ◽  
Andrzej Ubysz ◽  
Marek Maj ◽  
Amjad Zeno
Keyword(s):  
Experimental Investigation ◽  
Granular Material ◽  
Pressure Distribution ◽  
Flow Pattern ◽  
Pressure Transducer ◽  
Discharge Flow ◽  
Metal Cylinder ◽  
Flow Pressure ◽  
Funnel Flow ◽  
Distribution Of Flow

AbstractThis paper presents an experimental investigation of the discharge flow pressure in the vertical silo and the hopper due to the use of insert (top cone with trunk cone bottom). Using the Insert inside the silos is one of the proposed solutions to avoid the problems of having funnel flow pattern, which has a significant effect on the distribution of flow pressure exerted on the silo wall and the hopper. The experiments were performed on a metal cylinder prototype; corn was used as a granular material, and the wall and hopper pressure distribution was measured by a special pressure transducer. The experiments revealed an important result in the flow pressure due to the change in the location of the insert. The experiments were conducted in Damascus University laboratories.

scholarly journals Experimental Research on Wall Pressure Distribution in C-D Nozzle at Mach number 1.1 for Area Ratio 3.24

2019 ◽  
Vol 8 (2S3) ◽  
pp. 971-975 ◽  
Keyword(s):  
Experimental Investigation ◽  
Mach Number ◽  
Flow Field ◽  
Pressure Distribution ◽  
Pressure Ratio ◽  
Area Ratio ◽  
Wall Pressure ◽  
Circulation Zone ◽  
Nozzle Pressure Ratio ◽  
Nozzle Pressure

In this experimental investigation the work reported is about the influence of control on the flow field in the suddenly expanded duct at low supersonic Mach number. A Convergent-divergent (CD) nozzle was designed and fabricated out of brass material assembled with the suddenly expanded duct which was also made of brass material. At the re-circulation zone, the flow field was controlled by using the micro jets of 1 mm diameter as an orifice and the control was arranged at an interval of 90 degrees at 6.5 mm from the central axis of the main jet. The measured wall pressure distribution was presented for Mach number 1.1 for the duct diameter of 18 mm leading to the area ratio 3.24. The L/D ratio of the duct was varied from 1 to 10, and the nozzle pressure ratio (NPR) considered for the experiments was from 3, 5, 7, 9 and 11. The present results have demonstrated that the micro jets do not influence the flow field in the duct adversely and the flow field remained identical in the presence of control or absence of control

Numerical and experimental investigation of double-cone shock interactions

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 2268-2276
Author(s):  
M. J. Wright ◽  
K. Sinha ◽  
J. Olejniczak ◽  
G. V. Candler ◽  
T. D. Magruder ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Double Cone ◽  
Shock Interactions

Experimental Investigation of Subsonic Turbulent Flow Over Single and Double Backward Facing Steps

1962 ◽  
Vol 84 (3) ◽  
pp. 317-325 ◽  
Author(s):  
D. E. Abbott ◽  
S. J. Kline
Keyword(s):  
Experimental Investigation ◽  
Velocity Profile ◽  
Flow Pattern ◽  
Reynolds Numbers ◽  
Area Ratio ◽  
Single Step ◽  
Reattachment Length ◽  
Double Step ◽  
Wide Range ◽  
Geometric Variables

Results are presented for flow patterns over backward facing steps covering a wide range of geometric variables. Velocity profile measurements are given for both single and double steps. The stall region is shown to consist of a complex pattern involving three distinct regions. The double step contains an assymmetry for large expansions, but approaches the single-step configuration with symmetric stall regions for small values of area ratio. No effect on flow pattern or reattachment length is found for a wide range of Reynolds numbers and turbulence intensities, provided the flow is fully turbulent before the step.

scholarly journals Experimental investigation of the interaction of two cylinders in the flow pattern

2015 ◽  
Vol 92 ◽  
pp. 02110 ◽  
Author(s):  
Rut Vitkovičová ◽  
Jiří Nožička ◽  
Jan Čížek ◽  
Vladislav Skála
Keyword(s):  
Experimental Investigation ◽  
Flow Pattern

Experimental Investigation of the Pressure Distribution beneath a Floating Ice Block

2011 ◽  
Vol 137 (4) ◽  
pp. 399-411 ◽  
Author(s):  
Karen E. Dow Ambtman ◽  
F. E. Hicks ◽  
P. M. Steffler
Keyword(s):  
Experimental Investigation ◽  
Pressure Distribution

scholarly journals Experimental Research of Wall Pressure Distribution and Effect of Micro Jet at Mach 1.5

2019 ◽  
Vol 8 (2S3) ◽  
pp. 1000-1003 ◽  
Keyword(s):  
Adverse Effect ◽  
Flow Field ◽  
Pressure Distribution ◽  
Area Ratio ◽  
Wall Pressure ◽  
Rapid Expansion ◽  
Base Region ◽  
Active Controls ◽  
Circle Diameter

In this paper, a study on the effect of the control on the wall pressure as well as the quality of the flow when tiny jets were employed. The small jet aimed to regulate the base pressure at the base region of the suddenly expanded duct and wall pressure distribution is carried out experimentally. The convergent-divergent (CD) nozzle with a suddenly expanded duct was designed to observe the wall pressure distribution with and without control using small jets. In order to obtain the results with the effect of controlled four tiny jets of 1 mm diameter located at a ninety-degree interval along a pitch circle diameter (PCD) of 1.3 times the CD nozzle exit diameter in the base, region was employed as active controls. The Mach numbers of the rapidly expanded are 1.5. The jets were expanded quickly into an axis-symmetry duct with an area ratio of 4.84. The length-todiameter (L/D) ratio of the rapid expansion duct was diverse from 10 to 1. There is no adverse effect due to the presence of the tiny jets on the flow field as well as the quality of the flow in the duct

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