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

Tea cooling

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 22, 2018, 19:59
Default Tea cooling
  #1
New Member
 
Join Date: Jun 2017
Posts: 12
Rep Power: 8
StudentIB is on a distinguished road
Hi,

I would like to simulate the cooling of tea in some FEA software. My goal is to obtain a plot showing the relations between time required to cool down a tea to specified temperature vs ambient temperature. Such graph could be very useful in real life. I would know how long my tea should be left outside to cool down depending on the current weather.

In this first approach I want to ignore flow of the air and simulate its effect using convective heat flux. My idea is as follows:
- cup with tea as 2D axisymmetric model
- initial temperature for the cup: 22C
- initial temperature for the tea: 98C
- convective heat flux on the upper surface of the tea: different ambient temperatures in the next cases, some heat transfer coefficient specified (can you tell me which value of h would be the best ?) Or maybe I should use temperature boundary condition with T = 90C instead ?
- convective heat flux on the side of the cup: ambient temperature as above; any recommendations for this heat transfer coefficient ?

Here's how it would look like according to aforementioned settings:

https://imgur.com/a/o7FJgTn

So what do you think about such model ? It accounts for convection and conduction but omits evaporation. Any ideas how to add evaporation easily ? I would like to start from something simpler but when it works I can proceed to more advanced cases.

Thank you in advance for your help
StudentIB is offline   Reply With Quote

Reply

Tags
conduction, convection, cooling, evaporation, heat transfer

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newton's Cooling Nurzhan CFX 9 December 11, 2014 00:04
About Cooling channel alefem FLOW-3D 1 May 28, 2010 11:15
Regenerative cooling nozzle. Brian Fidelity CFD 3 September 1, 2005 08:53
Regenerative cooling rocket engine Brian Main CFD Forum 0 November 12, 2003 06:59
Passive cooling system for batch reactor Darek Main CFD Forum 0 September 30, 2003 05:06


All times are GMT -4. The time now is 11:14.