Airplane Washing Using Water Jet, CFD Simulation ANSYS Fluent Training

$210.00 Student Discount

This project was performed to simulate aircraft washing using a water jet by ANSYS Fluent software.

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If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
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The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
The MR CFD certification can be a valuable addition to a student resume, and passing the interactive test can demonstrate a strong understanding of CFD simulation principles and techniques related to this product.


Airplane washing Introduction

Airplane fuselages become contaminated over time due to high-velocity motion, including insect carcasses and bird droppings that combine with engine exhaust to create a carcinogenic layer of contaminant on the fuselage. This  Airplane washing is done several times during the year. Airplane windows are also sensitive parts that can be easily scratched, and it is best to cover these parts before starting the washing process.

Airplane washing

 Problem Description

This project was performed to simulate aircraft washing using ANSYS Fluent software. The computational domain of a cube with dimensions of 46 x 8.5 x 17, in which a separate part is provided to move the sub-domain of the aircraft using the sliding mesh model. Water enters the computational domain through holes in the bottom of the slope at a speed of 15 meters per second and air in the opposite direction of the plane at a speed of 2 meters per second from the opposite side to model more realistic conditions.

Geometry & Mesh

The computational domain was designed using Design Modeler software. The computational domain includes a 46 x 8.5 x 17 m cube. The domain in which the plane was located and moving a cube with a cross-section of 13.5 x 3 meters.

ANSYS Meshing software was used for grid generation, and the type of problem elements was unstructured. Also, the total number of elements was about 4560000.



Solver Setting

In this simulation, the following hypotheses are established:

  • A pressure solver was used.
  • The problem was solved transient.
  • The gravitational effect was considered.

Also, the table below shows the characteristics and values of boundary conditions, along with the models and hypotheses.

Material Properties
Amount Fluid properties
998.2 Density (kg/m3)
Amount Fluid properties
1.225 Density (kg/m3)
Homogeneous model VOF (volume of fluid)
Number of Eulerian phases 2 (water-air)
Interface modeling sharp
Formulation Explicit
Air-water surface tension coefficient 0.072 N/m
Boundary Condition
Type Velocity inlet
Water inlet 15 m/s
Air inlet 2 m/s
Type Outlet
Outlet  Gauge pressure zero
Cell zone condition
Fluid mixture
Mesh motion
Moving zone Translational velocity = 1 m/s
Turbulence models
K-e  viscous model
Realizable K-e model
Standard wall function Wall function
Solution methods
Simple pressure velocity coupling
Spatial discretization
PRESTO pressure
Second-order upwind momentum
Modified HRIC Volume fraction
First-order upwind turbulent kinetic energy
First-order upwind      turbulent dissipation rate
Initialization (Hybrid)


In this section, volume fraction and velocity counters are placed in a longitudinal section of the computational range. Observing these images, it is clear that the amount of air injection into the domain increases over time, and when the aircraft reaches that part, the washing process is performed.


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