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Tank Discharge Simulation, Ansys Fluent Training

5.0 (1 review)

$33.00

In this project, Rectangular Tank’s water discharge has been simulated and the results have been investigated.

This product includes Geometry & Mesh file and a comprehensive Training Movie.
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Description

Tank Discharge Project Description

The current project simulates the water discharge of a rectangular tank under the influence of gravity by Ansys Fluent software. The VOF model has been used to simulate and solve the two-phase flow field equations. The computational domain consists of three tanks that are connected by pipes.

Geometry & Mesh

The 2-D geometry of the present model is generated using Design Modeler software. The primary tank is a 229.4* 157.7 mm rectangular, the second tank is an eight-sided polygon with a side length of 51.3 mm, and the third tank is also a 229.4* 100 mm rectangular.

Mr CFD

. The meshing of this project has been done using Ansys Meshing software. The mesh type is unstructured, and the element number is equal to 15,310.

Mr CFD

Tank Discharge CFD Simulation Settings

We consider several assumptions to simulate the present model:

  1. Due to the incompressibility of the flow, the pressure-based solver method has been selected.
  2. The simulation is transient.
  3. The gravity effect is considered equal to -9.81 m.s-1 on Y-axis

The Laminar viscous model has been used to solve the flow field equations, and the pressure-velocity coupling scheme is SIMPLE. The second-order upwind discretization method has been used for momentum and PRESTO! For the pressure discretization.

The following tables represent a summary of the defining steps of the problem in this project and its solution:

Models
Multiphase
Homogeneous model Volume of fluid
Number of Eulerian phases 2(air& water)
Interface modeling Sharp

Interfacial Anti-Diffusion

Formulation Implicit
Body force formulation Implicit body force
Viscous Laminar
Material Properties
 Air
Density 1.225
viscosity 1.7894e-05
water-liquid
Density 998.2
viscosity 0.001003
Methods
Pressure-Velocity Coupling SIMPLE
  Pressure PRESTO!
  Momentum Second-order upwind
Volume fraction Compressive
Cell registers
Input coordinates
  X Min [m] 0.08
  X Max[m] 0.379
Y Min [m] 0.2264246
Y Max [m] 0.33
Initialization
Initialization methods Standard
Patch Phase Phase2
  Variable Volume Fraction
Registers to patch Region_0
Value 1
Run calculation
Time advancement Type adaptive
Parameters
Initial time step size 1e-05
Settings Minimum time step size 1e-05
Maximum time step size 0.001
Time step size 10000

Tank Discharge Results

After the solution process is completed, contours of Volume fraction, Pressure, Velocity, and Streamlines are extracted and presented below. As can be observed, the water discharges from the primary tank to the secondary tank, which has insufficient volume for storing water. After a while, water starts to fill the third tank, connected to the second tank. Some pipes are for air circulation inside the tanks. This phenomenon can be seen in the velocity and streamline contours.

You can obtain Geometry & Mesh file and a comprehensive Training Movie that presents how to solve the problem and extract all desired results.

1 review for Tank Discharge Simulation, Ansys Fluent Training

  1. Rebecca

    VOF simulations are stunning! Thank you for that.

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