CFD Online Logo CFD Online URL
Home > Forums > CFX

Solid object falling in water tank simulation

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   June 11, 2014, 19:00
Question Solid object falling in water tank simulation
New Member
Join Date: Jun 2014
Posts: 2
Rep Power: 0
cassini83 is on a distinguished road
Hello fellow CFD experts,
I need your help setting up this simulation in CFX. From the physical standpoint, the scenario is somewhat straight forward. The scenario goes as follows:
A stationary tank with water (like a glass of water) is subject to a solid object moving through (translation domain for the solid) from the top surface of the water to the bottom of the tank. After the solid is pushed to the bottom of the tank, it is left to interact with the fluid (and assuming its density is less than the liquid) one shall see the solid float to the surface.
The goal of the simulation is to visualize the transient fluid velocity profiles created as a result of the moving object. Ideally, I would like to estimate how long it takes for the water to get back to zero velocity (equilibrium) after one cycle (pushing the solid to the bottom of the tank and letting go of it and reach the surface).
This is obviously a transient simulation, with several domains (stationary and moving). Also, buoyancy would have to be enabled.
Any suggestions as to how to approach this setup would be greatly appreciated. After the simulation is setup, the ultimate goal is to optimize the shape of the solid object in order to "maximize" the time it takes for the water to get back to zero velocity.

Last edited by cassini83; June 11, 2014 at 22:18.
cassini83 is offline   Reply With Quote


buoyancy, tank

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
simulation of free falling sphere into calm water? pedyspider CFX 17 June 25, 2015 11:03
Falling Water Droplet Simulation Joe101 ANSYS 1 June 23, 2014 16:54
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Free water jet impinging hot solid surface, including boiling hamdy Fluent UDF and Scheme Programming 5 August 19, 2012 19:52
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 00:22.