ANSYS CFD Tutorial: Multi-Phase Flow | Drag on Hull of a Boat

Welcome back to The Engineering Guide! In today's video, we will be setting up a CFD Fluent simulation to model and analyze multi-phase flow, using the drag on the hull of a boat as an example use case. At first, we will take a look at the problem to become familiar with the geometry, boundary conditions and other variables that may be of importance. We will then jump into workbench and use fluent to perform the simulation.
In this tutorial, you will learn:
🔍 How to plot the geometry in SpaceClaim
🔍 How to mesh the geometry using body of influence sizing
🔍 How to initialize the simulation models
🔍 How to implement boundary conditions
🔍 How to plot drag
🔍 How to plot velocity and pressure contours in CFD-Post
Thank you for watching! Hope you enjoyed!
0:00 Introduction
4:29 Workbench
4:58 SpaceClaim Geometry Setup
11:49 Mesh Setup
19:03 Fluent - Boundary Conditions and General Simulation Setup
32:32 Running Calculation
33:20 Results Validation
34:34 Pressure and Velocity Contours in CFD-Post

[@liobalach]

very good. thANKS

[@Ardiansyah-cc7ch]

Thanks a lot, very helpful😅

[@udaifk9848]

Super informational video!!! Noticed that you calculated force in X-direction at the end and said that's the drag force, but it should be the force in Z-direction(according to your geometry) i believe

[@dinobird25]

Amazing tutorial,
would you make one with supersonic flow over a body?
thank you

[@DivyangPatel-xz4hc]

Hello, Thank you for uploading an insightfull video.Would it be possible to show pressure distrubutoin along symmetry and HULL. what is the lift force? Will you please upload a video on it with the above analysis?
Thank you in advanvce.

[@DivyangPatel-xz4hc]

Hello,
Thank you for an insightfull video. Wii it be possible to upload pressure variation along Symmetry wall and HULL? if you can show us that would be a great help.
Thank you again.

[@zo5679]

This might be a stupid question. Does ansys fluent show how ship trim (bow lifted) condition at different speed on the result (post processing). Or is it remain static. I ask this because i want to know ship trim condition at different speed so I'll run multiple simulation with different speed

[@user-ko1kw5cc2k]

Thats a good question

[@zo5679]

is it possible to do it with structured mesh? cause most tutorial show it with unstructured mesh

[@souravkanthal2796]

Bro we can do. But then your convergence time will very high and any ship type of complicated geometry mesh if we want to capture well we use tria. But yea you can use structure mesh also

[@zo5679]

@@souravkanthal2796 problem is when doing simulation of ship resistance in ansys we need to adjust inflation to y+=1 requirements and it messed up the orthogonal quality and lead to floating point exceptions error.

[@Pitoyoung]

hola