scholarly journals A CONSIDERATION ON THE RHEOLOGICAL CONSTANTS DETERMINED FROM THE VELOCITY AT THE TIP OF THE FLOW OF NEAR THE END IN THE FLOWING PART OF THE INCLINED FLOW TEST APPARATUS

2019 ◽  
Vol 84 (761) ◽  
pp. 905-915
Author(s):  
Hideyuki KAJITA ◽  
Yoshihisa NAKATA ◽  
Yoshihiro MASUDA ◽  
Hiroyuki SASAKURA
Keyword(s):  
Test Apparatus ◽  
Flow Test ◽  
Inclined Flow

scholarly journals EXPERIMENTS FOR EVALUATING FLOWABILITY OF FRESH CONCRETE BY USING THE INCLINED FLOW TEST APPARATUS

2012 ◽  
Vol 18 (38) ◽  
pp. 11-14 ◽  
Author(s):  
Hiroyuki SASAKURA ◽  
Yoshihiro MASUDA ◽  
Youngran LEE
Keyword(s):  
Fresh Concrete ◽  
Test Apparatus ◽  
Flow Test ◽  
Inclined Flow

Experimental Measurement of Alford’s Force in Axial Flow Turbomachinery

1984 ◽  
Vol 106 (3) ◽  
pp. 585-590 ◽  
Author(s):  
J. M. Vance ◽  
F. J. Laudadio
Keyword(s):  
Prediction Model ◽  
Experimental Measurement ◽  
High Speed ◽  
Aerodynamic Force ◽  
Axial Flow ◽  
Experimental Measurements ◽  
Test Apparatus ◽  
Rotor Speed ◽  
Flow Conditions ◽  
Flow Test

This paper presents the results of experimental measurements made on a small, high-speed, axial-flow test apparatus to verify the existence of Alford’s force and to investigate the validity of his mathematical prediction model. The measurements show that the cross-coupled aerodynamic force is linearly proportional to rotor eccentricity, and to stage torque, as predicted by Alford’s theory. However, it was found that the force is also speed-dependent, and that the inlet flow conditions to the stage have a pronounced effect. For some special combinations of rotor speed and stage torque, the direction of the force is reversed.

scholarly journals Particle Flow Testing of a Multistage Falling Particle Receiver Concept: Staggered Angle Iron Receiver (STAIR)

2020 ◽  
Author(s):  
Lindsey Yue ◽  
Nathan Schroeder ◽  
Clifford K. Ho
Keyword(s):  
Power Systems ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Particle Mass ◽  
Particle Flow ◽  
Test Apparatus ◽  
Angle Iron ◽  
Flow Test ◽  
Free Falling

Abstract Falling particle receivers are an emerging technology for use in concentrating solar power systems. In this work, a staggered angle iron receiver concept is investigated, with the goals of increasing particle curtain stability and opacity in a receiver. The concept consists of angle iron-shaped troughs placed in line with a falling particle curtain in order to collect particles and rerelease them, decreasing the downward velocity of the particles and the curtain spread. A particle flow test apparatus has been fabricated. The effect of staggered angle iron trough geometry, orientation, and position on the opacity and uniformity of a falling particle curtain for different particle linear mass flow rates is investigated using the particle flow test apparatus. For the baseline free falling curtain and for different trough configurations, particle curtain transmissivity is measured, and profile images of the particle curtain are taken. Particle mass flow rate and trough position affect curtain transmissivity more than trough orientation and geometry. Optimal trough position for a given particle mass flow rate can result in improved curtain stability and decreased transmissivity. The case with a slot depth of 1/4″, hybrid trough geometry at 36″ below the slot resulted in the largest improvement over the baseline curtain: 0.40 transmissivity for the baseline and 0.14 transmissivity with the trough. However, some trough configurations have a detrimental effect on curtain stability and result in increased curtain transmissivity and/or substantial particle bouncing.

Determination of Graft Forces for Cranial Cruciate Ligament Reconstruction in the Dog

1996 ◽  
Vol 09 (04) ◽  
pp. 165-171 ◽  
Author(s):  
D. A. Hulse ◽  
M. R. Slater ◽  
J. F. Hunter ◽  
W. A. Hyman ◽  
B. A. Shelley
Keyword(s):  
Degrees Of Freedom ◽  
Cruciate Ligament ◽  
Insertion Site ◽  
Graft Fixation ◽  
Flexion Angle ◽  
Patellar Ligament ◽  
Graft Material ◽  
Test Apparatus ◽  
Cranial Cruciate Ligament ◽  
Tibial Insertion

SummaryA test apparatus that allowed the stifle to move in five degrees of freedom was used to determine the effect of graft location, graft preload, and flexion angle at the time of graft fixation on the tensile graft forces experienced by a replacement graft material used to simulate reconstruction of the cranial cruciate ligament deficient stifle. Two graft locations (tibial insertion site of the patellar ligament and tibial insertion site of the cranial cruciate ligament), two graft preloads (5 N and 20 N), and three flexion angles at the time of graft fixation (15°, 30° and 90°) were examined. The tibial insertion site and preload did not have as great an effect on graft force as did the flexion angle of the limb at time of graft fixation. Graft forces were highest when reconstructions were performed with the limb in 90° of flexion (ρ <0.0001). This study supports the notion that intracapsular grafts should be fixed with the limb in a normal standing angle.A five degree of freedom test apparatus was used to evaluate the effect of graft location, graft preload, and limb flexion angle at time of graft fixation on reconstructions of the cranial cruciate ligament deficient stifle. Our results suggest that intracapsular grafts should not be fixed with the limb in 90° of flexion, but in a normal standing angle.

Evaluation of well completion quality based on flow test result

2020 ◽  
Vol 7 ◽  
pp. 33-35
Author(s):  
V.А. Iktisanov ◽  
◽  
N.Kh. Musabirova ◽  
А.V. Baygushev ◽  
М.Kh. Bilalov ◽  
...  
Keyword(s):  
Well Completion ◽  
Flow Test ◽  
Test Result
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