Equivalent reinforcement of a spherical bottom with a radial nozzle

1971 ◽  
Vol 7 (5) ◽  
pp. 503-507
Author(s):  
V. R. Terrovere
Keyword(s):  
Spherical Bottom ◽  
Equivalent Reinforcement ◽  
Radial Nozzle

scholarly journals Investigation of the structure of pseudo-shocks arising in supersonic gas flow in a radial nozzle

2018 ◽  
Author(s):  
S. P. Kiselev ◽  
V. P. Kiselev ◽  
V. N. Zaikovskii
Keyword(s):  
Gas Flow ◽  
Supersonic Gas Flow ◽  
Radial Nozzle

Equivalent reinforcement of holes in flat plates

1975 ◽  
Vol 11 (8) ◽  
pp. 862-866
Author(s):  
E. I. Mikhailovskii
Keyword(s):  
Flat Plates ◽  
Equivalent Reinforcement

An Investigation of the Flow Characteristics and of Losses in Radial Nozzle Cascades

1984 ◽  
Vol 106 (2) ◽  
pp. 502-509 ◽  
Author(s):  
S. G. R. Hashemi ◽  
R. J. Lemak ◽  
J. A. Owczarek
Keyword(s):  
Flow Characteristics ◽  
Leading Edge ◽  
Injection Technique ◽  
Test Results ◽  
Test Rig ◽  
Water Test ◽  
Edge Vortex ◽  
Loss Coefficients ◽  
Radial Nozzle ◽  
Nozzle Blade

A study was made of the flow in radial nozzle cascades using an air test rig and a water test rig. In the air test rig, three cobra probes were used in circumferential and spanwise traverses to determine the total pressure variations in the flow field at three radii downstream of the nozzles at which static pressure was also measured. The tests were made on two sets of nozzle blades having heights of 0.148 in. (0.376 cm) and 0.200 in. (0.508 cm), at trailing edge angles (measured from circumferential direction) of 15, 20, and 25 deg, and at two flow Mach numbers of approximately 0.2 and 0.35. The test results presented in this paper, in the form of loss coefficients and flow angles, were flow-weighted and averaged. Flow visualization in the air test rig was made on the walls bounding the nozzle blades using the graphite power-oil mixture technique. Additional tests were made on the water test rig using dye injection technique. Photographs were obtained showing clearly formation of secondary flow around each nozzle blade in the form of the leading edge vortex. The test results confirm the existence of the leading edge vortices reported peviously, and extend their study to the radial nozzle cascades.

Stresses in a Spherical Shell With a Nonradial Nozzle

1967 ◽  
Vol 34 (2) ◽  
pp. 299-307 ◽  
Author(s):  
D. E. Johnson
Keyword(s):  
Cylindrical Shell ◽  
Boundary Conditions ◽  
Spherical Shell ◽  
Shell Theory ◽  
Analytical Investigation ◽  
Type Method ◽  
Cylindrical Nozzle ◽  
Pass Through ◽  
External Forces ◽  
Radial Nozzle

An analytical investigation is made of the stresses due to external forces and moments acting on an elastic nonradial circular cylindrical nozzle attached to a spherical shell. The nozzle (a cylindrical shell) is nonradial in the sense that its axis is inclined and does not pass through the center of the sphere. Results are obtained by combining solutions from shell theory by a Galerkin-type method so as to satisfy boundary conditions at the intersection of the two shells. It is found that, as the nozzle inclination increases, the stresses change gradually from those previously given by Bijlaard for the radial nozzle.

Phased array concept for the ultrasonic inservice inspection of the spherical bottom of BWR-pressure vessels

1989 ◽  
Vol 112 ◽  
pp. 105-114 ◽  
Author(s):  
G. Brekow ◽  
H. Wüstenberg ◽  
W. Möhrle ◽  
E. Schulz
Keyword(s):  
Phased Array ◽  
Pressure Vessels ◽  
Spherical Bottom

Evaluation of Constraint Effect due to Crack Location and Bottom Head Shape

2016 ◽  
Author(s):  
Shin-Beom Choi ◽  
Han-Bum Surh ◽  
Jong-Wook Kim
Keyword(s):  
Stress Intensity Factor ◽  
Stress Intensity ◽  
Intensity Factor ◽  
Head Shape ◽  
Constraint Effect ◽  
Crack Location ◽  
Spherical Bottom ◽  
Axial Crack ◽  
Elliptical Bottom ◽  
The Difference

The aim of this paper is to evaluate the constraint effect due to the crack location and bottom head shape. To do so, two types of bottom head shape such as a semi-spherical bottom head and semi-elliptical bottom head were considered. In addition, five types of axial crack and two types of circumferential crack, classified by location, were adopted to conduct FE analyses. As a result, the bottom head shape does not affect the stress intensity factor of the circumferential flaw. Moreover, the crack location is not a sensitive parameter of the stress intensity factor for an axial crack located at the semi-spherical bottom head. In contrast, the crack location should be considered when the stress intensity factor of an axial crack located at the semi-elliptical bottom head is calculated. In addition, a heatup curve and cooldown curve were derived from the FE analysis results. As a result, the constraint effect owing to a crack location, except for the transition area, is not shown in the case of a semi-spherical bottom head. In the case of a semi-elliptical bottom head, the difference between each crack location is shown. These results will be helpful to enhance the understanding of the constraint effect and P-T limit curve.

scholarly journals Modified solution of radial nozzle with thick reinforcement in spherical vessel head subjected to radial load

1997 ◽  
Vol 178 (2) ◽  
pp. 185-194 ◽  
Author(s):  
Young-Shin Lee ◽  
Yong-Soo Sohn
Keyword(s):  
Radial Load ◽  
Spherical Vessel ◽  
Radial Nozzle

Resonant-size spherical bottom scatterers for dye-sensitized solar cells

RSC Advances ◽  
2013 ◽  
Vol 3 (47) ◽  
pp. 25417 ◽  
Author(s):  
Ali Dabirian ◽  
Nima Taghavinia
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Spherical Bottom ◽  
Sensitized Solar Cells

scholarly journals Experimental investigations on concrete beams reinforced with equivalent service steel pipe

2021 ◽  
Vol 30 (1) ◽  
pp. 16-28
Author(s):  
Labeeb Al-Yassri ◽  
Alaa Al-Khekani ◽  
Munaf Al-Ramahee
Keyword(s):  
Promising Result ◽  
Reference Beam ◽  
Steel Pipe ◽  
Experimental Investigations ◽  
Main Concern ◽  
Hollow Section ◽  
Steel Pipes ◽  
Multistory Building ◽  
Equivalent Reinforcement ◽  
Cracking Pattern

Different techniques were employed for the passage of different utilities through structural elements. The reduction of the overall building weight was the main concern that needs to be achieved, especially for a multistory building. It can be done with the eliminating of a suspended ceiling with a portion of the beam’s weight by taking the advantages of the hollow sections. In this study, an equivalent reinforcement to the traditional ribbed reinforcement was employed to fabricate a reinforced concrete (RC) beam with a hollow section along the length of the beam. A steel pipe was used based on the equivalent moment from section analysis. Two diameters were selected of steel pipes as an equivalent to the commercial reinforcement. A total of four RC beams were cast and tested, two of them with traditional reinforcement and the other with steel pipe reinforcement. The comparison showed a promising result in terms of ductility, cracking pattern, ultimate strength, and mode of failure compared to the reference beam. The peak loads for the specimens with steel pipe were 160.6 kN and 184 kN, while they were 192 kN and 203.5 kN for the beams with traditional reinforcement.

Sign in / Sign up

Export Citation Format

Share Document