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[mohammedlaminemekhalfia]

Dear

I hope this post will find all users well,

as a followup for my problem considering the plot for campbell diagram for a Bladed disk (60 blades).

I was wondering if there is a possibility to make ansys draw the campbell diagram for more tham 180 modes?

I tried that but I had the following error:

"Campbell Diagram data is not complete. Please refer to ANSYS output file for possible causes." The following information is what I deduced after outputting the file from the solution branch (Write input file) and looking through the error file which says "there's no data related to the campbell diagram."

I tried previous suggested solution about creating a new database but that did not work.

Attached a Picture for the Geometry

[Aniket]

Can you also include the error messages in the solver output file? 

-Aniket

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[mohammedlaminemekhalfia]

This message I got when I reduced the number of modes from 180 to 121 but for the first case it was mentionned a lake of files ( corrupted database ) for the  memory I am sure that I have sufficent alloacated memory (RAM) and storage capacity of hard disk.

 

PRINT CAMPBELL DIAGRAM
    Sorting : ON
    X axis unit : rd/s
    Driving component : CM_ROTVELCITY53                
    Printout all frequencies

 *** FATAL ***                           CP =   14177.062   TIME= 16:52:51
 This model requires more scratch space than available.  The program has
 currently allocated 39439 MB and was not able to allocate enough       
 additional memory in order to proceed.  Please increase the virtual    
 memory on your system and/or increase the work space memory and rerun  
 the program.  Problem terminated.                                      

 ALL CURRENT ANSYS DATA WRITTEN TO FILE NAME= ansabort.db
  FOR POSSIBLE RESUME FROM THIS POINT

 ************************************************************************
 The above error is non-recoverable by ANSYS                            
  ANSYS run terminated by the indicated error                           
  Current data base saved if possible.   

 

 

 

[mohammedlaminemekhalfia]

This is the message when I try with 180 modes

-----------------------------------

fAnsMemAllocL with negative length=         -1060200976
  This is probably due to an integer overflow in
   the calculation of the block size.
  The data type is=   3 and the block name=

[mohammedlaminemekhalfia]

This message I got when I reduced the number of modes from 180 to 121 but for the first case it was mentionned a lake of files ( corrupted database ) for the  memory I am sure that I have sufficent alloacated memory (RAM) and storage capacity of hard disk.

 

PRINT CAMPBELL DIAGRAM
    Sorting : ON
    X axis unit : rd/s
    Driving component : CM_ROTVELCITY53                
    Printout all frequencies

 *** FATAL ***                           CP =   14177.062   TIME= 16:52:51
 This model requires more scratch space than available.  The program has
 currently allocated 39439 MB and was not able to allocate enough       
 additional memory in order to proceed.  Please increase the virtual    
 memory on your system and/or increase the work space memory and rerun  
 the program.  Problem terminated.                                      

 ALL CURRENT ANSYS DATA WRITTEN TO FILE NAME= ansabort.db
  FOR POSSIBLE RESUME FROM THIS POINT

 ************************************************************************
 The above error is non-recoverable by ANSYS                            
  ANSYS run terminated by the indicated error                           
  Current data base saved if possible.   

 

 

 

[Aniket]

This basically means you do not have enough RAM to solve the problem, you may want to try it with a machine with higher RAM.

-Aniket

How to access Ansys help links

Guidelines for Posting on Ansys Learning Forum

[mohammedlaminemekhalfia]

I use this machine  : HP 470 G7 17,3 i7-10510U/16GB/1TB SSD/R530-2GB/DVD/W10P.

I performed yestreday another simulation: to have the following error