scholarly journals Experimental investigation of added mass effects on a hydrofoil under cavitation conditions

2013 ◽  
Vol 39 ◽  
pp. 173-187 ◽  
Author(s):  
O. De La Torre ◽  
X. Escaler ◽  
E. Egusquiza ◽  
M. Farhat
Keyword(s):  
Experimental Investigation ◽  
Added Mass ◽  
Mass Effects

scholarly journals Experimental investigation of added mass effects on a Francis turbine runner in still water

2006 ◽  
Vol 22 (5) ◽  
pp. 699-712 ◽  
Author(s):  
C.G. Rodriguez ◽  
E. Egusquiza ◽  
X. Escaler ◽  
Q.W. Liang ◽  
F. Avellan
Keyword(s):  
Experimental Investigation ◽  
Added Mass ◽  
Francis Turbine ◽  
Mass Effects ◽  
Turbine Runner

An Experimental Investigation of Added Mass and Damping in Submerged Pipework

2015 ◽  
Author(s):  
Hugh Goyder
Keyword(s):  
Experimental Investigation ◽  
Signal Processing ◽  
Oil And Gas ◽  
Natural Frequencies ◽  
Small Diameter ◽  
Added Mass ◽  
Sea Floor ◽  
Damping Effect ◽  
Signal Processing Methods ◽  
Surrounding Fluid

Oil and gas pipework located on the sea floor may sometimes suffer from vibration and possible failure due to fatigue. The vulnerable pipework is usually the small diameter (typically 2 in) pipes in manifold systems. In order to assess this pipework for vibration it is necessary to know the natural frequencies and damping which are significantly influenced by the surrounding fluid. Measurements have been made on an L-shaped pipe to determine how it is affected by the fluid. Interestingly the effect on damping is small. Consequently experiments have also been performed to see the effect of adding vanes to the pipe. This provides a non-linear form of damping. Special signal processing methods have been developed to investigate this damping effect. The paper presents values for damping for pipes with and without vanes. The effect of the vanes is to significantly increase the damping.

Modeling added mass effects on the vibrations of air-backed, pre-deformed membranes

2021 ◽  
pp. 116149
Author(s):  
Pasquale Di Trolio ◽  
Alain Boldini ◽  
Maurizio Porfiri
Keyword(s):  
Added Mass ◽  
Mass Effects
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