Pouring Water out of a Bottle Simulation, Ansys Fluent Training

$60.00 Student Discount

In this project, the Pouring Water out of a Bottle has been simulated and the results of this simulation have been investigated.

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

In this project, Ansys Fluent software has been used for numerical simulation of pouring water out of the bottle. The Eulerian model has been used to simulate and solve the two-phase flow field equations. The Eulerian multiphase model in ANSYS FLUENT allows for the modeling of multiple separate yet interacting phases. The phases can be liquids, gases, or solids in nearly any combination.

Geometry & Mesh

The 2-D geometry of the present model is generated using SpaceClaim software.


The meshing of the present model has been done using Ansys Meshing software. The mesh type is unstructured in all of the computational domains, and the element number is equal to 150,642.


Pouring water 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-2 on Y-axis

The K-epsilon Standard viscous model with Standard wall function has been used to solve the turbulent flow equations. The pressure-velocity coupling scheme is SIMPLE. The second-order upwind discretization method has been used for Momentum, Turbulent kinetic energy, and Turbulent dissipation rate.

The boundary conditions and their details are shown in the figure below.


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

Model Eulerian
Eulerian parameters Multi-Fluid VOF model
Number of Eulerian phases 2(air & water)
Interface modeling Sharp
Formulation Explicit
Primary phase air
Secondary phase water
k-epsilon Standard
Near wall treatment Standard wall functions
Material Properties
Density 1.225
viscosity 1.7894e-05
Density 998.2
viscosity 0.001003
Boundary conditions
Outlet Pressure outlet
Pressure-Velocity Coupling SIMPLE
Pressure PRESTO
Momentum Second-order upwind
Turbulent kinetic energy Second-order upwind
Turbulent dissipation rate Second-order upwind
Volume fraction Compressive
Initialization methods Hybrid
Patch Phase water
  Variable Volume Fraction
Zones to patch water
Value 1
Run calculation
Time step size 0.0025
Max iterations/time step 20
Number of time steps 3708

Pouring Water Results

After the solution process is completed, contours of water velocity, Pressure, water volume fraction, and Eddy viscosity are extracted. As can be seen, under the influence of gravity, the water inside the bottle starts to flow, and it discharges to another empty container and fills it.

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 Pouring Water out of a Bottle Simulation, Ansys Fluent Training

  1. Lada

    Could you explain to me what is “Eddy viscosity”? I really appreciate it.

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