|
[Sponsors] |
|
August 3, 2023, 12:36 |
Fourier Transformation with Harmonic Balance
|
#1 |
New Member
Sebastian
Join Date: Jan 2022
Location: Germany
Posts: 12
Rep Power: 4 |
Hey guys,
currently i am working on a transient rotor stator problem. in my model, consisting of inlet channel - rotor - stator - outlet channel, i have already simulated a Fourier transform with time integration. this has worked so far and the results agree well with those of a steady state reference simulation. Now i want to try a harmonic balance as transient method instead of time integration. for this i have defined the interfaces between inlet and rotor as well as stator and outlet as frozen rotor interfaces, because stage mixing plane is not viable. However I get some warnings and an error message before the simulation even starts. i will post this message below: +--------------------------------------------------------------------+ | ****** WARNING ****** | | | | This Transient Blade Row run may experience robustness and/or | | convergence difficulties caused by the "Frozen Rotor" domain | | interface : IF1 | | which could inject additional frequencies not captured by the | | defined Fourier transformations. | +--------------------------------------------------------------------+ Details of error:- ---------------- Error detected by routine PEEKCA CDANAM = CPERIOD CRESLT = NONE Current Directory : /ABR/OUTPUT/ZN1 +--------------------------------------------------------------------+ | ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Stopped in routine MEMERR | | | | | | | | | | | +--------------------------------------------------------------------+ +--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The ANSYS CFX solver exited with return code 1. No results file | | has been created. | +--------------------------------------------------------------------+ End of solution stage. Does anyone have an idea what the problem could be here? PS: I have already asked a short question about this, where I thought that the problem is solved so far, but it did not quite work. someone said the periodic boundarys could be the reason but i checked them and found nothing suspicious, especially since there were no issues with it before. Best Regards, Sebastian |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Harmonic balance method for calculating multi-stage turbines | HIT19B902072 | SU2 | 2 | April 24, 2022 02:31 |
Post-processing for Transient Blade Row: RotorStator FOURIER TRANSFORMATION | M-B | CFX | 0 | June 29, 2017 10:17 |
Problems with CFX Fourier Transformation | Falcon16 | CFX | 0 | October 16, 2016 16:06 |
Transient Blade Models - Fourier Transformation - Transient Rotor Stator | Veronique Pe | CFX | 11 | October 22, 2014 05:44 |
TBR Fourier Transformation Method | Eschek | CFX | 2 | May 16, 2013 17:12 |