Fire design of composite beams and slabs: practical design considerations according to Eurocode 4

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 1395-1402
Author(s):  
Ricardo Pimentel ◽  
Helder Craveiro ◽  
Rui Simões
Keyword(s):  
Composite Beams ◽  
Design Considerations ◽  
Practical Design ◽  
Fire Design

Theoretical And Practical Design Considerations for Ultra-High Resolution Electron Lenses

1980 ◽  
Vol 38 ◽  
pp. 266-269
Author(s):  
Y. Harada ◽  
K. Tsuno ◽  
Y. Arai
Keyword(s):  
Optical Properties ◽  
High Resolution ◽  
Chromatic Aberration ◽  
Point Of View ◽  
Pole Piece ◽  
Axial Field ◽  
Design Considerations ◽  
Resolution Electron ◽  
Practical Design ◽  
Peak Flux

Magnetic objective lenses, from the point of view of pole piece geometry, can he roughly classified into two types, viz., symmetrical and asymmetrical. In the case of the former, the optical properties have been calculated by several authors1-3) and the results would appear to suggest that, in order to reduce the spherical and chromatic aberration coefficients, Cs and Cc, it is necessary to decrease the half-width value of the axial field distribution and to increase the peak flux density. The expressions for either minimum Cs or minimum Cc were presented in the form of ‘universal’ curves by Mulvey and Wallington4).

Practical Design Considerations for Managing Marine Growth on VIV Suppression Devices

2015 ◽  
Author(s):  
Don W. Allen ◽  
Li Lee ◽  
Dean Henning ◽  
Stergios Liapis
Keyword(s):  
Reynolds Number ◽  
Fatigue Life ◽  
Strong Influence ◽  
Low Reynolds Number ◽  
Vortex Induced Vibration ◽  
Design Considerations ◽  
Drag Forces ◽  
Practical Design ◽  
Helical Strakes ◽  
Viv Suppression

Most deepwater tubulars experiencing high currents frequently require vortex-induced vibration (VIV) suppression to maintain an acceptable fatigue life. Helical strakes and fairings are the most popular VIV suppression devices in use today. Marine growth can significantly affect the VIV of a bare riser, often within just a few weeks or months after riser installation. Marine growth can have a strong influence on the performance of helical strakes and fairings on deepwater tubulars. This influence affects both suppression effectiveness as well as the drag forces on the helical strakes and fairings. Unfortunately, many VIV analyses and suppression designs fail to account for the effects of marine growth at all, even on a bare riser. This paper utilizes results from both high and low Reynolds number VIV test programs to provide some design considerations for managing marine growth for VIV suppression devices.

Experimental Investigations of Strongly Swept Turbine Cascades with low Speed Flow

1974 ◽  
Vol 16 (1) ◽  
pp. 32-40 ◽  
Author(s):  
J. M. Hill ◽  
R. I. Lewis
Keyword(s):  
Experimental Work ◽  
Meridional Flow ◽  
Experimental Investigations ◽  
Low Speed ◽  
Design Procedures ◽  
Design Considerations ◽  
Speed Flow ◽  
Practical Design ◽  
Turbine Cascades

Results are presented from an investigation into the blade to blade and meridional flow perturbations arising in high deflection turbine cascades subjected to large sweep angles. Experimental work has confirmed previous analytical estimates of the effect of sweep and indicated that certain common design procedures for the calculation of blade to blade flows are seriously in error. The significance of the results with reference to practical design considerations is discussed.

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