Modelling Quenching In StarCCM+

patilsachin · February 8, 2018, 04:29

Hi,

I am trying to model quenching of a steel ball in water. I am having trouble with the physics models to be selected.

Should I go for only CHT or also include boiling it?

If I have to include boiling, should I go for VOF, Wall Boiling, OR Eulerian Mutliphase Mixture?

Any leads in these would be highly appreciated

ashokac7 · February 8, 2018, 04:50

Quote:

Originally Posted by patilsachin

Hi,

I am trying to model quenching of a steel ball in water. I am having trouble with the physics models to be selected.

Should I go for only CHT or also include boiling it?

If I have to include boiling, should I go for VOF, Wall Boiling, OR Eulerian Mutliphase Mixture?

Any leads in these would be highly appreciated

This depends on objective of your project. But to say I will not directly go with boiling modelling. First try validation with CHT only. Hope this helps.

patilsachin · February 25, 2018, 07:54

Well I am trying to generate a cooling curve.

Without boiling model, the temperature drop is very low.

In water quenching, the temperature drops to quenchant temperature within a 10 - 15 seconds which is not simulated if I select only CHT model.

Are there any tutorials available on Quenching?

ashokac7 · February 26, 2018, 01:44

Drop me your personal mail in private message. I have something to share with you about quenching. But it is from Star-CCM guide.

sathishkrazy · April 10, 2018, 00:26

Yeah you need to activate vof Boiling model and use transition boiling in order to obtain cooling curve
Follow the below approach for quenching simulation.

This needs to be done in Transient
Keep the top portion of rectangular Box(which u are filling with water) as pressure outlet..ie open to atmosphere.
Define Two phases ie water and Vapour, primary as water& secondary as vapour.
Model Steel ball as solid and define properties and specify temperature under initial conditions(as this is transient simulation)

February 8, 2018, 04:29	Modelling Quenching In StarCCM+	#1
patilsachin New Member Join Date: Jul 2017 Posts: 15 Rep Power: 9	Hi, I am trying to model quenching of a steel ball in water. I am having trouble with the physics models to be selected. Should I go for only CHT or also include boiling it? If I have to include boiling, should I go for VOF, Wall Boiling, OR Eulerian Mutliphase Mixture? Any leads in these would be highly appreciated

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Setting the height of the stream in the free channel	kevinmccartin	CFX	12	October 13, 2022 22:43
CFD in Naval Hydrodynamics, Off-Shore and Wave Modelling with OpenFOAM	hjasak	OpenFOAM Announcements from Other Sources	2	February 13, 2017 05:59
error message	cuteapathy	CFX	14	March 20, 2012 07:45
Advice on multi-phase flow modelling	Martin	Main CFD Forum	3	October 14, 2008 06:16
Computational Modelling of Vortex Separators	May Lim	Main CFD Forum	6	November 13, 1998 13:36

February 25, 2018, 07:54		#3
patilsachin New Member Join Date: Jul 2017 Posts: 15 Rep Power: 9	Well I am trying to generate a cooling curve. Without boiling model, the temperature drop is very low. In water quenching, the temperature drops to quenchant temperature within a 10 - 15 seconds which is not simulated if I select only CHT model. Are there any tutorials available on Quenching?

February 26, 2018, 01:44		#4
ashokac7 Senior Member Ashok Chaudhari Join Date: Aug 2016 Location: Pune, India Posts: 260 Rep Power: 11	Drop me your personal mail in private message. I have something to share with you about quenching. But it is from Star-CCM guide.

April 10, 2018, 00:26		#5
sathishkrazy New Member sthish Join Date: May 2012 Posts: 11 Rep Power: 14	Yeah you need to activate vof Boiling model and use transition boiling in order to obtain cooling curve Follow the below approach for quenching simulation. This needs to be done in Transient Keep the top portion of rectangular Box(which u are filling with water) as pressure outlet..ie open to atmosphere. Define Two phases ie water and Vapour, primary as water& secondary as vapour. Model Steel ball as solid and define properties and specify temperature under initial conditions(as this is transient simulation)