CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

Solidification axi-symmetric unsteady

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 26, 2016, 17:30
Default Solidification axi-symmetric unsteady
  #1
New Member
 
Abdullatif A. Gari
Join Date: Feb 2016
Posts: 3
Rep Power: 2
agari is on a distinguished road
My problem is a hollow cylinder modeled as a 2d (r,z) axi-sym problem.
Inner BC has variable temperature which I have modeled using UDF ans is as follows: T = 312.+10.*sin(2.*PI*t/86400)*(0.5-x[0]);
Outer BC is convection with Tinf=300 and h=5
dimensions: Di = 0.1 cm, Do = 0.3 cm, L = 1 m
Solver is pressure based, axi-sym, unsteady, 1st order implicit
Model is energy and solidification are on
gravity = -9.81 in (-ve) x-direction
fluid is heneicosane well defined and used before with solidification with no problem.
solution control all default but used presto, 2nd order for descritization
I used 1 sec and 0.01 sec as time steps.

when writing temperatures of inner and outer surface monitor it gives very low and high temp's like 222 K bot and 565 K top
Also animation for solidification is not showing any thing
animation for temperature is showing that the melting temp is reached and passed. (initial temperature is 300)

Any help? how to have animation of liquid fraction and right temp distribution in the systsem?

Version used: FLUENT
Version: 2d, dp, pbns, lam, unsteady (2d, double precision, pressure-based, laminar, unsteady)
Release: 6.3.26
Cortex Version: 3.7.3

Model Settings
---------------------------------------------------------
Space 2D
Time Unsteady, 2nd-Order Implicit
Viscous Laminar
Heat Transfer Enabled
Solidification and Melting Enabled

Equation Solved
-----------------
Flow yes
Energy yes

Type SIMPLE
Pressure PRESTO!
Momentum Second Order Upwind
Energy Second Order Upwind
agari is offline   Reply With Quote

Reply

Tags
presto, solidification/melting, unsteady

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
Axi - symmetric flow in OpenFOAM ivanddd OpenFOAM Running, Solving & CFD 0 April 2, 2012 05:06
Error in Axi symmetric model. binubtharayil FLUENT 2 August 5, 2009 16:01
doubts about axi symmetric moving reference frame and eers Main CFD Forum 0 July 9, 2009 15:53
BC's for following axi symmetric geometry.. eers Main CFD Forum 0 June 29, 2009 12:16
Axi symmetric flow Emmanuel Resch CD-adapco 4 February 10, 2008 14:29


All times are GMT -4. The time now is 16:55.