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.

NUMERICAL SIMULATION OF 3D FLUID-STRUCTURE INTERACTION USING AN IMMERSED MEMBRANE METHOD

2005 ◽  
Vol 19 (28n29) ◽  
pp. 1447-1450 ◽  
Author(s):  
G. H. XIA ◽  
Y. ZHAO ◽  
J. H. YEO
Keyword(s):  
Numerical Simulation ◽  
Heart Valve ◽  
Fluid Structure Interaction ◽  
Mechanical Heart Valve ◽  
Three Dimensional ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Membrane Method ◽  
Interaction Phenomena

In this paper, an immersed membrane method (IMM) is proposed for the simulation of three-dimensional (3D) fluid-structure interaction phenomena in a mechanical heart valve (MHV).

On the Numerical Simulation of Fluid-Structure Interaction to Estimate the Fatigue Life of Subsea Pipeline Spans: Effects of Wall Proximity

2010 ◽  
Author(s):  
Juan P. Pontaza ◽  
Raghu G. Menon
Keyword(s):  
Numerical Simulation ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Design Guidelines ◽  
Fluid Structure ◽  
Bottom Currents ◽  
Structure Interaction ◽  
Sea Bottom ◽  
Subsea Pipelines ◽  
Wall Proximity

Subsea pipelines laid on uneven terrain typically have segments of unsupported spans, referred to as “free spans”. Alternatively, subsea pipelines lying on loose and fine gravel or sand may develop free spans due to sea bottom being scoured out due to current action. This paper is concerned with the numerical simulation of fluid-structure interaction (FSI) to predict the response of free spans exposed to sea bottom currents. When exposed to sea bottom currents these spans may experience vortex-induced vibrations (VIV), which may cause fatigue damage to the pipeline. The VIV response of the pipe span is predicted by coupling a three-dimensional viscous incompressible Navier-Stokes solver with a nonlinear beam finite element solver. Parameters such as turbulence in the flow, proximity of the seabed, pipe sagging due to submerged weight, and pipe-soil interaction, are all accounted for in the FSI simulation. We pay special attention to the effect of seabed / wall proximity on VIV. Design guidelines for free spans are typically based on VIV amplitude and frequency responses for isolated pipes, with little regard to effects of seabed / wall proximity. This may result in overly conservative designs and/or expensive span remediation recommendations, when in reality no span remediation is required. Two examples of field applications are presented.

Torque Analysis of IPMC Actuated Fin of a Micro Fish like Device Using Two-Way Fluid Structure Interaction Approach

2015 ◽  
Vol 25 ◽  
pp. 25-38
Author(s):  
Mazhar Ul Haq ◽  
Zhao Gang ◽  
Zhuang Zhi Sun ◽  
S.M. Aftab
Keyword(s):  
Numerical Simulation ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Pressure Profile ◽  
Three Dimensional Model ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Fluid Forces ◽  
Flow Speeds ◽  
Interaction Approach

In this paper, a numerical simulation of three dimensional model of IPMC actuated fin of a fish like micro device is presented using two-way fluid structure interaction approach. The device is towed by the surface vessel through a tow cable. Fin is acting as dorsal fin of the fish to control depth of the device and also acts as a stabiliser against its roll motion. Fin's displacement disturbs water flow streamlines around it, as a result velocity and pressure profile of fluid's domain changes around the actuated fin. As fin's position continuously changes throughout its actuation cycle, this makes it transient structural problem coupled with a fluid domain. Fin's displacement is received by the fluid and resulting fluid forces are received by the fin making it a two-way fluid structure interaction (FSI) problem. Such problems are solved by multi field numerical simulation approach. This multifield numerical simulation is performed in ANSYS WORKBENCH by coupling transient structural and Fluid Flow (CFX) analysis systems. It is desirous to determine the torque acting on the fin due to fluid forces through its actuation cycle by IPMC actuators. The objective of this study is to develop the methodology (two-way fluid structural interaction (FSI)) used to simulate the transient FSI response of the IPMC actuated fin, subjected to large displacement against different flow speeds. Efficacy of fin as depressor and riser is also required to be judged by monitoring the forces acting on wing in response to its displacement under IPMC actuation. Same approach is also applicable to the self-propelled systems.

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.

scholarly journals Effects of Guide Vane Placement Angle on Hydraulic Characteristics of Flow Field and Optimal Design of Hydraulic Capsule Pipelines

Water ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1378 ◽  
Author(s):  
Chunjin Zhang ◽  
Xihuan Sun ◽  
Yongye Li ◽  
Xueqin Zhang ◽  
Xuelan Zhang ◽  
...  
Keyword(s):  
Flow Field ◽  
Guide Vane ◽  
Fluid Structure Interaction ◽  
Internal Flow ◽  
Agricultural Products ◽  
Transport Cost ◽  
Hydraulic Characteristics ◽  
Long Distance ◽  
Fluid Structure ◽  
Structure Interaction

With the rapid growth of agricultural trade volumes, the transportation of agricultural products has received widespread attention from society. Aiming at these problems of low transport efficiency and high transport cost in long-distance transport of agricultural products, an energy-saving and environmental-friendly transport mode of agricultural machinery—hydraulic capsule pipelines (HCPs)—was proposed. HCPs effectively solve issues like traffic congestion, energy crises, and atmospheric pollution. Published literature is mainly limited to the capsule speed and the pressure drop characteristics of the fluid within the pipelines. This research was conducted on the following four aspects of HCPs. Firstly, the structure of the carrier was improved and called a ‘piped carriage’. Secondly, a coupled solution between the structural domain of the piped carriage and the fluid domain within the pipelines was numerically investigated by using the commercial CFD software ANSYS Fluent 12.0 based on the bidirectional fluid–structure interaction methods. Thirdly, the effects of guide vane placement angle on hydraulic characteristics of the internal flow field within the horizontal pipelines transporting the piped carriage were extensively evaluated. Finally, based on least-cost principle, an optimization model of HCPs was established. The results indicated that the simulated results were in good agreement with the experimental results, which further demonstrated that it was feasible to adopt the bidirectional fluid–structure interaction methods for solving the hydraulic characteristics of the internal flow field when the piped carriage was moving along the pipelines. This article will provide an abundant theoretical foundation for the rational design of HCPs and its popularization and application.

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