CFD Online Discussion Forums - FSI simulation in ansys cfx

hi every one
I've done a one way FSI simulation in ansys cfx on an artery ,now I'm working on a two way one,but i have some problems. for example in two way simulation we should define the solid and fluid geometries together, so on wich part should we insert the fluid solid interface , on fluid or solid or both!?
I've applied it on both parts but still I have this error in solver, hope some one knows about this problem:(
+--------------------------------------------------------------------+
| |
| ANSYS CFX Interpolator 12.1 |
| |
| Version 2009.10.14-23.08 Thu Oct 15 04:18:41 GMTDT 2009 |
| |
| Executable Attributes |
| |
| double-int32-64bit-novc8-noifort-novc6-optimised-supfort-noprof-nos|
| |
| Copyright 2009 ANSYS Inc. |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| Job Information |
+--------------------------------------------------------------------+

Run mode: serial run

Host computer: ARASH-PC
Job started: Sat Aug 11 15:29:06 2012

+--------------------------------------------------------------------+
| Memory Allocated for Run (Actual usage may be less) |
+--------------------------------------------------------------------+

Data Type Kwords Words/Node Words/Elem Kbytes Bytes/Node

Real 1219.9 75.62 47.16 9530.3 604.99
Integer 1460.9 90.56 56.47 5706.5 362.25
Character 1648.2 102.18 63.72 1609.6 102.18
Logical 82.4 5.11 3.19 321.9 20.44
Double 117.1 7.26 4.53 914.6 58.06

Details of error:-
Details of error:-
----------------
----------------
Error detected by routine MAKDAT
Error detected by routine MAKDAT
CDANAM = IZN CDTYPE = INTR ISIZE = 1
CDANAM = IZN CDTYPE = INTR ISIZE = 1
CRESLT = OLD
CRESLT = OLD

Current Directory : /INTERP/OLD1/MESH/TSTEP0/CLOOP0/ZN1
Current Directory : /INTERP/OLD1/MESH/TSTEP0/CLOOP0/ZN1

+================================================= ===================+
| ****** PROBLEM REPORT ****** |
|--------------------------------------------------------------------|
| Subsystem: Input |
| Subroutine name: ErrAction |
| Severity level: Fatal Error |
| Error message number: 001100279 |
|--------------------------------------------------------------------|
| Message: |
| |
| Stopped in routine MEMERR |
| |
| |
| |
| |
| |
+================================================= ===================+

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| Error interpolating results onto the new mesh: C:\Program |
| Files\ANSYS Inc\v121\CFX\bin\winnt-amd64\double\solver-hpmpi.exe |
| exited with return code 1. |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| ANSYS Solver terminated with return code 3840 |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| The results from this run of the ANSYS solver have been written to |
| C:\Users\Arash\AppData\Local\Temp\FSI paye |
| kootah_4052_Working\dp0\CFX\CFX\Work1\blood_002.an sys |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| The following user files have been saved in the directory |
| C:\Users\Arash\AppData\Local\Temp\FSI paye |
| kootah_4052_Working\dp0\CFX\CFX\Work1\blood_002: |
| |
| job |
+--------------------------------------------------------------------+

This run of the ANSYS CFX Solver has finished.