CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > Siemens > STAR-CCM+

Star CCM+ Help

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 2, 2017, 19:39
Default Star CCM+ Help
  #1
New Member
 
fa
Join Date: Nov 2013
Posts: 21
Rep Power: 7
yamifm0f is on a distinguished road
Hello
I am studying mechanical engineering and I need to do a project with star ccm+ but I never used CFD programs before. I am trying to learn how to use the program for two-phase flow (Gas-Liquid) because my project focuses on the interaction between them.
I am trying to solve the Stefan problem with gas and water but I do not know how.
the model is 40 mm long with about 1 mm in height (hight does not matter because I want to model it as 1 D)
I set up my model as
Two Dimensional
Implicit Unsteady
Eulerian Multiphase
VOF
laminar flow
segregated multiphase temperature
gravity

for the phase interaction model I chose
VOF-VOF
VOF boiling
Rohsenow Boiling
interactive density

the material properties are

the density of both Gas and Water are 1 kg/m3
the mixture latent heat is 1000 kJ/kg
the surface tension is 0.01 N/m
T sat is 373.15
T wall is 383.15
specific heat for both is 1000 J/kgK
Thermal conductivity of water is 1 W/mK and for Gas is 0.1 W/mK
the viscosity of Water 0.01 Pas and for Gas is 1E-5 Pas


I chose the secondary phase Gas (H2O) and primary phase Water (H2O)

and made the VOF as composite and chose a specified filed for the gas on the right side wall

for the initial conditions,
the pressure was put as the atm pressure
static temp. was put as 373.15 K
velocity was put as 0 m/s

for the right wall boundary condition, I made the temperature specification in the physics condition as a temperature above saturation temp. of 383.15 K

The left wall, top wall, and bottom wall was put as plane symmetry

I know that there is something wrong with it. Can you help me??
Also, I want to specify the latent heat, so can you inform me how?
I figured out that it can be set as the heat of formation and standard static temp. in the material property but I do not understand. I remember seeing in the user guide that they put the latent heat as the heat of formation only, then what is the standard static temp. !!

Thank you in advance

Last edited by yamifm0f; December 2, 2017 at 21:13.
yamifm0f is offline   Reply With Quote

Reply

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
problem when imported geometry from 3D CAD to star ccm, TAREK GANAT STAR-CCM+ 1 May 21, 2013 23:15
Fluent Vs Star CCM firda Main CFD Forum 3 February 26, 2011 03:51
StarToFoam error Kart OpenFOAM Meshing & Mesh Conversion 1 February 4, 2010 05:38
error in star ccm maurizio Siemens 3 October 16, 2007 06:17
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 05:15


All times are GMT -4. The time now is 19:57.