The Effect of Operating Parameters Upon Radial Lip Seal Performance

1984 ◽  
Author(s):  
Les Horve
Keyword(s):  
Operating Parameters ◽  
Lip Seal

Hydrodynamic Analysis of the Flow in a Rotary Lip Seal Using Flow Factors

2004 ◽  
Vol 126 (1) ◽  
pp. 156-161 ◽  
Author(s):  
Richard F. Salant ◽  
Ann H. Rocke
Keyword(s):  
Flow Field ◽  
Pressure Distribution ◽  
Reynolds Equation ◽  
Present Approach ◽  
Operating Parameters ◽  
Pumping Rate ◽  
Hydrodynamic Analysis ◽  
Lip Seal ◽  
Lubricating Film ◽  
Computationally Intensive

The flow field in the lubricating film of a rotary lip seal is analyzed numerically by solving the Reynolds equation with flow factors. The behavior of such a flow field is dominated by the asperities on the lip surface. Since previous analyses treated those asperities deterministically, they required very large computation times. The present approach is much less computationally intensive because the asperities are treated statistically. Since cavitation and asperity orientation play important roles, these are taken into account in the computation of the flow factors. Results of the analysis show how the operating parameters of the seal and the characteristics of the asperities affect such seal characteristics as the pressure distribution in the film, the pumping rate and the load support.

Application of Improved Voltage Compensation in the SEM to Imaging of Organic Materials

1973 ◽  
Vol 31 ◽  
pp. 444-445
Author(s):  
P.J. Killingworth ◽  
M. Warren
Keyword(s):  
Electron Beam ◽  
Organic Materials ◽  
Operating Parameters ◽  
Low Density ◽  
Beam Diameter ◽  
Incident Electron Beam ◽  
Specimen Material ◽  
Voltage Compensation ◽  
Selection Of ◽  
Scanning Electron

Ultimate resolution in the scanning electron microscope is determined not only by the diameter of the incident electron beam, but by interaction of that beam with the specimen material. Generally, while minimum beam diameter diminishes with increasing voltage, due to the reduced effect of aberration component and magnetic interference, the excited volume within the sample increases with electron energy. Thus, for any given material and imaging signal, there is an optimum volt age to achieve best resolution.In the case of organic materials, which are in general of low density and electric ally non-conducting; and may in addition be susceptible to radiation and heat damage, the selection of correct operating parameters is extremely critical and is achiev ed by interative adjustment.

Electron sources: Past, present, and future

1993 ◽  
Vol 51 ◽  
pp. 764-765
Author(s):  
David C Joy
Keyword(s):  
Glass Tube ◽  
Source Size ◽  
Electron Gun ◽  
Operating Parameters ◽  
Operational Parameters ◽  
Electron Sources ◽  
Difficult Decision ◽  
Probe Size ◽  
Wide Range ◽  
Overall Performance

The electron source is the most important component of the Scanning electron microscope (SEM) since it is this which will determine the overall performance of the machine. The gun performance can be described in terms of quantities such as its brightness, its source size, its energy spread, and its stability and, depending on the chosen application, any of these factors may be the most significant one. The task of the electron gun in an SEM is, in fact, particularly difficult because of the very wide range of operational parameters that may be required e.g a variation in probe size of from a few angstroms to a few microns, and a probe current which may go from less than a pico-amp to more than a microamp. This wide range of operating parameters makes the choice of the optimum source for scanning microscopy a difficult decision.Historically, the first step up from the sealed glass tube ‘cathode ray generator’ was the simple, diode, tungsten thermionic emitter.

THE INFLUENCE OF OPERATING PARAMETERS ON THE TEMPERATURE DISTRIBUTION IN FLIGHTED ROTARY DRUMS

2018 ◽  
Author(s):  
Jakob Seidenbecher ◽  
Fabian Herz ◽  
Eckehard Specht ◽  
S. Wirtz ◽  
A. Berndt ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Operating Parameters

Devices for Synchronized Phasor Measurements of Electric Power System Operating Parameters under Different Conditions of Their Operation

2018 ◽  
Vol 6 (6) ◽  
pp. 16-23
Author(s):  
Boris K. MAKSIMOV ◽  
◽  
Tat’yana G. KLIMOVA ◽  
Andrei V. ZHUKOV ◽  
Dmitrii M. DUBININ ◽  
...  
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
Operating Parameters ◽  
Phasor Measurements ◽  
System Operating

The Identification of Pre-Failure Conditions of Oil Coolers of NPP MCP by Operating Parameters

2020 ◽  
Vol 37 (4) ◽  
pp. 82-90
Author(s):  
V.V. Krivin ◽  
V.Ya. Shpicer ◽  
V.A. Tolstov ◽  
I.O. Ishigov
Keyword(s):  
Operating Parameters ◽  
Failure Conditions

NOMINAL DESIGN AND OPERATING PARAMETERS OF AQUATUBULAR STEAM GENERATORS FEED BY SOLID, LIQUID AND GASEOUS FUELS: A CASE STUDY

2019 ◽  
Author(s):  
Daniel Mazzette Souza ◽  
Wellington Balmant ◽  
JOSÉ VIRIATO COELHO VARGAS ◽  
Fernando Bóçon
Keyword(s):  
Operating Parameters ◽  
Steam Generators ◽  
Gaseous Fuels ◽  
Solid Liquid

Investigation of the effect of the constructive and mode parametres of a combined rocker on the power of the drive of the working bodies

2019 ◽  
pp. 82-85
Author(s):  
Pavel Ivanovich Pavlov ◽  
Viktor Vladislavovich Korsak ◽  
Aleksandr Olegovich Vezirov ◽  
Dmitriy Vadimovich Mukhin
Keyword(s):  
Operating Parameters ◽  
Regression Equations ◽  
Drive Power ◽  
Minimum Value ◽  
Working Bodies

The regression equations and graphical dependencies are obtained, which describe the influence of design and operating parameters on the drive power of the working bodies. The value of the design and operating parameters in which the power required to drive the working bodies, will have a minimum value  are experimentally determined.

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