scholarly journals Effect of bidirectional internal flow on fluid–structure interaction dynamics of conveying marine riser model subject to shear current

2012 ◽  
Vol 4 (1) ◽  
pp. 57-70 ◽  
Author(s):  
Zheng-Shou Chen ◽  
Wu-Joan Kim
Keyword(s):  
Fluid Structure Interaction ◽  
Internal Flow ◽  
Marine Riser ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Interaction Dynamics ◽  
Shear Current ◽  
Model Subject

A Coupled Two-Way Fluid-Structure Interaction Analysis for the Dynamics of a Partially Confined Cantilevered Pipe Under Simultaneous Internal and External Axial Flow in Opposite Directions

2021 ◽  
Author(s):  
Farhang Daneshmand ◽  
Tahereh Liaghat ◽  
Michael Paidoussis
Keyword(s):  
Interaction Analysis ◽  
Velocity Ratio ◽  
Fluid Structure Interaction ◽  
Axial Flow ◽  
Internal Flow ◽  
Structural Domain ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Cantilevered Pipe ◽  
Central Pipe

Abstract This paper presents the results of a coupled two-way fluid-structure interaction analysis of a slender flexible vertical cantilevered pipe hanging concentrically within a shorter rigid tube forming an annulus. The pipe is subjected to internal and annular flows simultaneously. This system has applications in brine production and salt-cavern hydrocarbon storage. In the present study, the fluid-structure problem is solved with a finite-volume-based CFD code for the fluid domain coupled to a finite-element-based CSM code for the structural domain. The numerical results obtained for the free-end displacement of the central pipe versus the annular/internal flow velocity ratio U_o/U_i are presented and compared with those obtained from experiment. The capability of the numerical model to predict the onset of the experimentally observed flutter instability in the system is also examined. This provides a better insight into the dynamics of the system.

scholarly journals The Unsteady Numerical Simulation and Fluid-Structure Interaction Analysis of TLB600-700 Desulphurization Pump

2014 ◽  
Vol 6 ◽  
pp. 191697
Author(s):  
Xiaoke He ◽  
Jianrui Liu ◽  
Dengpeng Fu
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Design Method ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Internal Flow ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Design Requirements ◽  
Unsteady Numerical Simulation

Based on the design theory of liquid-solid two-phase flow centrifugal pump, a new type TLB600-700 desulphurization pump was designed with huge distortions blades design method and impeller inlet super long extension blades design method. Three-dimensional model of internal flow field in TLB600-700 desulphurization pump was built by software PROE5.0, and the three-dimensional unsteady numerical simulation of the internal flow field was calculated, which revealed that the rotor-stator interaction between rotating impeller and volute is the reason why unstable flow generated. Statics analysis was carried out on the impeller in the stationary flow state with the method of fluid-structure interaction, and results indicated that the impeller strength and stiffness meet the design requirements. External characteristic test results of TLB600-700 desulphurization pump showed that all parameters of desulphurization pump designed by innovative method meet design requirements; especially the pump efficiency was increased by 4.15% higher than Chinese national standard.

Coupled Analysis the Segmented SRM Internal Flow Field with Influence of Inhibitor Deformation

2012 ◽  
Vol 452-453 ◽  
pp. 1346-1350
Author(s):  
Shuang Wu Gao ◽  
Hong Fu Qiang ◽  
Wei Zhou ◽  
Peng Peng Wu
Keyword(s):  
Flow Field ◽  
Fluid Structure Interaction ◽  
Internal Flow ◽  
Rocket Motor ◽  
Coupled Analysis ◽  
Solid Rocket Motor ◽  
Fluid Structure ◽  
Large Eddy Simulation Model ◽  
Structure Interaction ◽  
Solid Rocket

The coupled influence between structure and internal flow field will make the pressure oscillation during working process of the solid rocket motor. This coupled effect will bring the dynamic press on the payload and extremely destroyed the payload. For researching the influence of internal flow field by the deformation of inhibitor, the parallel fluid structure interaction method with the large eddy simulation model was used to analyze the solid rocket motor with segments. The results show that the deformation of inhibitor will influence the internal flow field parameter’s distribution and enhance the pressure frequency and amplitude remarkably. The partitioned method could solution the fluid structure interaction problems in the segmented solid rocket motor properly.

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