|
[Sponsors] |
Propeller simulation not matching experimental data |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
April 12, 2024, 14:25 |
Propeller simulation not matching experimental data
|
#1 |
New Member
Kevin Gnanaraj
Join Date: Apr 2024
Posts: 28
Rep Power: 2 |
Hi,
I'm trying to do a simple propeller simulation based on this paper: 3D CFD Simulation and Experimental Validation of Small APC Slow Flyer Propeller Blade (Kutty and Rajendran, 2017), using a different 22 in propeller from T-motor. I've set up a simulation using both Frozen Rotor and Mixing Planes in CFX, and tried a few different Boundary Conditions: inlet: velocity, mass flow and total pressure, outlet: avg. static pressure, static pressure, opening), conducted a mesh independence study, and none of these seem to match the experimental thrust. (Mixing planes always ends up with floating point overflow, even with double precision). Right now, I'm trying a physical timescale of 1/propeller rotational velocity (rad s-1). I have been using the k-omega SST model. What I am trying to do is a static thrust study of the propeller. Can someone point me to to a paper or resources on how to set this up correctly, or explain the appropriate boundary conditions? I've been stuck on this issue for a month, and I'll need to move to a co-axial co-rotating study once this is done, so I want to get this right and understand why before moving on. An issue I'm seeing is that the velocity leaks radially instead of through the propeller. Hopefully I've attached the images correctly. 438065022_960348448716476_6737782057466766531_n.jpg 438065217_1645858406189039_5850337538447370833_n.png 438083337_1359463431392043_2573848191980117877_n.png 438051586_884524410101071_5336072679999309056_n.png |
|
Tags |
floating point exception, mixing planes, propeller flow error |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
[OpenFOAM] Paraview python script, creating data using only CLI, saving in csv/excel file | Ash Kot | ParaView | 1 | September 24, 2021 12:23 |
Error running AMI propeller simulation | luitzor | OpenFOAM Running, Solving & CFD | 0 | April 19, 2021 13:48 |
Pump CAD + experimental data for CFD verification study | bemism | Main CFD Forum | 0 | July 20, 2017 15:30 |
Data Produced From Fine Marine Cant Match with The Experimental Data | PeiSan | Fidelity CFD | 4 | August 23, 2014 05:33 |
How to compare the average velocity of the simulation with the Experimental data ? | nanavati | OpenFOAM Post-Processing | 2 | August 22, 2014 04:48 |