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FSI Method for Water Turbine CFD Simulation

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A turbine is a rotating mechanical device that takes energy from the fluid flow and converts it.


This product includes CFD simulation files and a training movie using ANSYS Fluent software.

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To order your ANSYS Fluent project (CFD simulation and training) contact our experts via, online support, or WhatsApp.


FSI Problem Description

The present study investigates the water flow around a vertical water-turbine considering unsteady CFD simulation. In the present case, it is assumed that the turbine blades are affected by the flow of the passing fluid; that is, the fluid flowing through the turbine blades impedes forces on the turbine body and these forces cause deformation or resizing of the body of these blades. Therefore, the present problem consists of two fluid and solid solutions at the same time and hence, the FSI method and the coupling between the fluid flow and the Transient Structural are used. Also, the moving mesh technique should be applied to make instantaneous changes to the mesh structure.

Assumptions for Water Turbine Simulation

Simulation is Transient and the solver is pressure-Based. Also, the gravity force effect is ignored.

Geometry & Mesh of the Water Turbine

The present 3-D model was designed by Design Modeler software. The geometry of the model consists of a large cubic space as a fluid domain and the water turbine inside this space as a solid domain. The unstructured mesh was carried out by ANSYS Meshing software. The element number is 523202.

CFD Simulation

Here is a summary of the steps to define and solve the problem in the table:

k-epsilonViscous model
standardk-epsilon model
standard wall functionnear wall treatment
Dynamic mesh
smoothing and remeshingmesh methods
system couplingdynamic mesh zone
Boundary conditions for FSI CFD simulation
1.5 m.s-1velocity magnitude
0 Pagauge pressure
wallWalls type
stationary wallsblades and fixed walls
Solution Methods for FSI simulation
Simple Pressure-velocity coupling
second order upwindpressureSpatial discretization
second order upwindmomentum
first order upwindturbulent kinetic energy
first order upwindturbulent dissipation rate
Initialization (FSI)
StandardInitialization method
1.5 m.s-1x-velocity


All files, including Geometry, Mesh, Case & Data, are available in Simulation File. By the way, Training File presents how to solve the problem and extract all desired results.



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