CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Suction pressure distribution at the bottom caused by a ship propeller

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

LinkBack Thread Tools Search this Thread Display Modes
Old   April 6, 2020, 07:41
Default Suction pressure distribution at the bottom caused by a ship propeller
New Member
Join Date: Dec 2019
Posts: 12
Rep Power: 4
loewieke53 is on a distinguished road
Dear OpenFOAM users,

I am doing research about the suction pressure distribution on the bottom caused by a ship propeller. These suction pressure are generated at the intake side of the propeller. The inlet velocity is chosen to be equal to zero.

When I run my numerical model, the suction pressures are indeed generated, but I saw that far upstream of the propeller, the pressure is still negative instead of the zero Pressure value. I have added a screenshot which should clarify my problem. Intuitively, the pressure should assymptotically go the zero upstream of the propeller. Instead the pressure goes asymptotically to -4.99 Pa. This is a wrong result as far upstream, the bottom will not feel the presence of the propeller, so the pressure should be 0 here.

Is there anyone who has experienced the same problem? I am thinking something is not right with my boundary conditions at the inlet. I tried multiple other ones, but I can't find a solution.

Many thanks and kind regards,

Attached Images
File Type: png Pressure.png (51.9 KB, 13 views)
Attached Files
File Type: zip (9.8 KB, 3 views)
loewieke53 is offline   Reply With Quote


actuator disc, boundary condition, pressure, propeller

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Getting divergence while increasing the back pressure at pressure outlet greenfields15 FLUENT 0 March 19, 2018 00:39
Gas Diffusion and Pressure Distribution Xuekun Main CFD Forum 0 October 29, 2015 11:10
Pressure instabilities at the bottom of the domain MaryBau OpenFOAM 6 February 19, 2013 17:19
pressure distribution in water flow, differences in icoFoam and COMSOL deniggo OpenFOAM Running, Solving & CFD 14 September 30, 2010 04:48
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 16:00

All times are GMT -4. The time now is 21:55.