CFD Online Logo CFD Online URL
Home > Forums > Visualization & Post-Processing Software > Tecplot

Create variables from instantaneous quantities?

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

LinkBack Thread Tools Display Modes
Old   June 10, 2014, 15:46
Default Create variables from instantaneous quantities?
New Member
Join Date: Aug 2011
Posts: 3
Rep Power: 8
akiss20 is on a distinguished road
Hi All,

I am diving into the world of unsteady CFD and have some questions about unsteady post-processing in Tecplot. To preface, I am loading a transient 3D CGNS file into Tecplot 360 2011/2012 (depending on the computer) R1 for analysis. I am simulating the stall of a rotor-only calculation of a low speed compressor.

One thing I want to be able to do is to create a variable based on the instantaneous area/mass average at that given time. For example, I would like to define a total-to-static pressure rise coefficient which is defined as

(P_static - massAverage(P_total@inlet))/(0.5*rho*U_tip^2)

I want the mass average of total pressure at the inlet to be a function of time rather than a time average. Is this possible to do in Tecplot? I also want this to be a variable, not just a single value, so I can see how this coefficient is distributed spatially and temporally.

On a more nitty gritty note, I also am struggling with data organization in Tecplot. It seems when I load an unsteady CGNS file it creates a separate zone for each timestep and spatial zone. So say if I have 10 spatial zones (inlet,outlet,blade Omesh etc etc) and 20 time steps, I now have 200 zones. Tecplot will lump them together via time strands in the zone style dialogue box, but if I go to Dataset Info it shows all 200 zones. This would make re-naming the spatial zones, or taking sub-zones very difficult. Is there any way around this?

akiss20 is offline   Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Restarting a run from .trn files What variables do I need?) Badi CFX 2 December 29, 2017 23:13
Possible to create cyliner baffle (internal) using topoSet or stl Mesh? keepfit OpenFOAM 4 February 19, 2017 15:40
[ICEM] how to create a 2d tri mesh with quad mesh in the boundary layer seal2013 ANSYS Meshing & Geometry 3 October 6, 2013 16:09
create the file *.foam phongstar OpenFOAM 11 July 26, 2010 19:23
Actuator disk model audrich FLUENT 0 September 21, 2009 07:06

All times are GMT -4. The time now is 19:44.