Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. crustaccione

    Pressurized release of gas using ANSYS Fluent: are these settings correct?

    I am currently trying to model the pressurized release of air from a 1000 psi tank into a chamber. I'm currently using Density-based settings because I couldn't seem to get a solution when I used Pressure-based settings. This is how I initialized the problem: 1) Set everything as a wall...
  2. crustaccione

    Modelling a shock tube in ANSYS Fluent

    I know I posted a similar question, but I think I have a clearer explanation of what I want to do. I basically want to model a shock tube, where pressurized air is kept behind a diaphragm in an enclosed tube, and at t=0 the diaphragm bursts and the pressurized air propagates in the enclosed...
  3. crustaccione

    ANSYS Fluent for transient modelling of fixed mass of gas

    Hi all, I am extremely new to ANSYS Fluent so pardon me if these questions are very basic. Basically I want to model the flow of a fixed amount of air in a pressurized gas tank throw a pipe and into a chamber using Fluent, how would I go about doing this? I currently just have the chamber...
  4. crustaccione

    What is a good constitutive model for isotropic metals?

    I am currently modelling the transverse compression of a gold fibre using FEA software, and I was wondering what plasticity model would be good. I'm thinking of using Johnson-Cook's plasticity model, but I then have no idea where to get the necessary parameters. If there is no good model, where...
  5. crustaccione

    ABAQUS/Explicit Field output huge fluctuations

    I'm using ABAQUS Explicit, simulating a dynamic pressure load within a confined box. I tried outputting the Mises stress at the inner corner node, and the output I'm getting has these huge vibrations (as attached). I'm not sure what this is, it's probably something to do with finite element...
  6. crustaccione

    ABAQUS Fluid-Structure Co-simulation keeps crashing/Program not responding

    I have no idea why this happens, but I've been pounding at this the whole night. I have a Fluid-Structure co-simulation all set up and ready to run. It does ok for about 3000 iterations, and then at a certain total time ABAQUS stops responding. What does this mean when this happens, is the...
  7. crustaccione

    ABAQUS 6.12 Fluid exchange with environment interaction requires two nodes?

    I have a cylinder set up, and I want to model the leakage of the air inside the cylinder into the environment and monitor the pressure on the walls. Problem is, when I set up the interaction, I have an error of TWO REFERENCE NODES MUST BE SPECIFIED ON THE DATA LINE OF THE *FLUID EXCHANGE...
  8. crustaccione

    ABAQUS/CFD multiple parts

    I am working with the ABAQUS/CFD package. I have a slightly more complex assembly, basically a pipe (long cylinder) flowing into a chamber (rectangular box), which is subsequently connected to several other outlet pipes (more cylinders). I have the parts listed in ABAQUS, and then combined them...
  9. crustaccione

    ABAQUS CFD Fluid flow into pipe with sealed end problems

    I want to model a simple fluid flow into a pipe with a sealed end. My model is a simple cylinder with the wall surface set to No Slip Wall BC and the ends as inlet/outlet. Here are my BC values: One end: Fluid inlet, 2000psi Pressure Sealed end: Fluid outlet, velocities all set to 0 Walls: No...
  10. crustaccione

    Interaction module in ABAQUS

    I am having issues with the Interaction module in ABAQUS, and the several tutorials I've found online don't seem to address this issue. Basically I'm modeling the compression of a cylinder, and for some reason the post-compression results don't look like they should be. I attached the images as...
  11. crustaccione

    Weird diagonal line on CATPart, no constraint problems

    I created a part and there were absolutely no problems with the model; however there seems to be a weird edge running diagonally as shown below. I used a Pad feature for the bottom plate and a Pocket for the groove underneath, if that's of any relevance.
  12. crustaccione

    CATIA V5R16 Apply Materials in Read-Only

    I'm trying to use an image as a material surface, but whenever I try to edit the Properties under Apply Material, there is no 'OK' button. I desperately need to change the Scale U,V and Position U,V of the image because I'm trying to work on this tutorial attached...

Part and Inventory Search

Back
Top