Flow-Induced Vibrations of Mixing Vessel Internals

1985 ◽  
Vol 107 (2) ◽  
pp. 253-258
Author(s):  
R. King
Keyword(s):  
Vessel Wall ◽  
Research Work ◽  
Operating Limits ◽  
Flow Induced Vibrations ◽  
Mixing Vessels ◽  
Safe Operating

This paper draws together the results of research work undertaken at BHRA on cylinders excited to oscillate by flow within unbaffled mixing vessels. Oscillations of an anchor mixer and of dip tubes are described, including those cases in which the cylinders are mounted close to the vessel wall. The results are used to define guidelines for calculating safe operating limits of cylinders dipping into water, and for avoiding vortex excited oscillations of an anchor mixer by a device which actually improves its efficiency as a mixer.

Unified Mechanism for Graphene FET's Electrothermal Breakdown and Its Implications on Safe Operating Limits

2021 ◽  
pp. 1-8
Author(s):  
Abhishek Mishra ◽  
Adil Meersha ◽  
N. K. Kranthi ◽  
Jeevesh Kumar ◽  
N. S. Veenadhari Bellamkonda ◽  
...  
Keyword(s):  
Operating Limits ◽  
Safe Operating ◽  
Electrothermal Breakdown

Writing in the margins: Considerations for safe operating limits

2021 ◽  
Author(s):  
Sean J. Dee ◽  
Russell A. Ogle ◽  
Matthew S. Walters
Keyword(s):  
Operating Limits ◽  
Safe Operating

scholarly journals Experimental studies into the processes accompanying an intercircuit steam generator break in the safe operating limits in HLMC reactor facilities

2016 ◽  
Vol 2 (3) ◽  
pp. 156-160
Author(s):  
A.V. Beznosov ◽  
T.A. Bokova ◽  
O.O. Novozhilova ◽  
A.G. Meluzov ◽  
R.A. Metrinsky ◽  
...  
Keyword(s):  
Steam Generator ◽  
Experimental Studies ◽  
Operating Limits ◽  
Safe Operating

scholarly journals Experimental studies into the processes accompanying an intercircuit steam generator break in the safe operating limits in HLMC reactor facilities

2016 ◽  
Vol 2016 (2) ◽  
pp. 154-162
Author(s):  
Alexander Viktorovich Beznosov ◽  
Tatiana Alexandrovna Bokova ◽  
Olga Olegovna Novozhilova ◽  
Alexander Georgievich Meluzov ◽  
Roman Andreyevich Metrinsky ◽  
...  
Keyword(s):  
Steam Generator ◽  
Experimental Studies ◽  
Operating Limits ◽  
Safe Operating

The safe operating volume as a general measure for the operating limits of LDMOS transistors

2013 ◽  
Author(s):  
A. Ferrara ◽  
P. G. Steeneken ◽  
A. Heringa ◽  
B. K. Boksteen ◽  
M. Swanenberg ◽  
...  
Keyword(s):  
General Measure ◽  
Operating Limits ◽  
Safe Operating

Modeling and Simulation of Cross-Flow Induced Vibrations in Tube Bundles Using Bondgraph Approach

2006 ◽  
Author(s):  
M. Afzaal Malik ◽  
Badar Rashid ◽  
M. Anwar Khan ◽  
Khawaja Sajid Bashir ◽  
Shahab Khushnood
Keyword(s):  
Research Work ◽  
Cross Flow ◽  
Acoustic Resonance ◽  
Elastic Instability ◽  
Steam Generators ◽  
Two Phase ◽  
Considerable Research ◽  
Tube Bundles ◽  
Flow Induced Vibrations ◽  
Excitation Mechanisms

A considerable research has been carried out in the field of Cross-Flow Induced Vibrations (CFIV) in tube bundles of process exchangers and nuclear steam generators. Various excitation mechanisms such as vortex shedding, turbulent buffeting, fluid-elastic instability and acoustic resonance and other parameters like natural frequencies, damping, wear work rates at the loose tube supports and various geometric tube arrangements have been the focus in single and two-phase cross-flow. In the current research work, CFIV has been studied by using Bondgraph approach. The Bondgraph models have been subjected to simulation using the software (20-SIM). Results obtained have shown a strong usefulness of Bondgraph approach to complex CFIV systems.

Safe Operating Limits

2011 ◽  
Vol 17 (5) ◽  
pp. 14-19
Author(s):  
P. E. Sutherland
Keyword(s):  
Operating Limits ◽  
Safe Operating

A Replica Technique for the Inside Surfaces of Small Diameter Pipes and Tubes

1967 ◽  
Vol 25 ◽  
pp. 352-353
Author(s):  
T. G. Gregory
Keyword(s):  
Polyvinyl Chloride ◽  
Small Diameter ◽  
Replica Technique ◽  
Tube Size ◽  
Inside Diameter ◽  
Complete Inspection ◽  
Operating Limits

A nondestructive replica technique permitting complete inspection of bore surfaces having an inside diameter from 0.050 inch to 0.500 inch is described. Replicas are thermally formed on the outside surface of plastic tubing inflated in the bore of the sample being studied. This technique provides a new medium for inspection of bores that are too small or otherwise beyond the operating limits of conventional inspection methods.Bore replicas may be prepared by sliding a length of plastic tubing completely through the bore to be studied as shown in Figure 1. Polyvinyl chloride tubing suitable for this replica process is commercially available in sizes from 0.037- to 0.500-inch diameter. A tube size slightly smaller than the bore to be replicated should be used to facilitate insertion of the plastic replica blank into the bore.

Enumeration and Identification of Asbestos Fibres in Water

1974 ◽  
Vol 32 ◽  
pp. 526-527 ◽  
Author(s):  
O. Mudroch ◽  
J. R. Kramer
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Drainage Basin ◽  
Lake Superior ◽  
Research Work ◽  
List Type ◽  
The West ◽  
Asbestos Fibre ◽  
Amphibole Asbestos

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.

Sign in / Sign up

Export Citation Format

Share Document