Solver Type

genehhz · February 15, 2019, 03:18

I would appreciate if anyone could advise me the type of solver to use in the fluent to simulate the following conditions:

An well regulated HVAC system operating in the populated working office desk room. I am interested in the air flow distribution as well as the thermal load generated by each human in order to determine the human thermal comfort. What type of solver should I use and how do I activate and simulate the buoyancy effect of the air. Air Velocity is about 0.2 - 2 m/s.

Thank You

LuckyTran · February 15, 2019, 08:46

Not enough info to say... All of the solvers will work. But I would recommend to start with steady, pressure-based until you find out otherwise.

Enable gravity and make sure you select something for the equation of state for density that's not constant.

genehhz · February 17, 2019, 08:22

May I know what equation of state would you recommend

LuckyTran · February 18, 2019, 06:45

My recommendation is you pick. =)

Seriously, all of them work (except constant). It's just a matter of how you like to model your problem.

MKuhn · February 18, 2019, 07:37

Material properties --> density -->
* ideal gas
* incompressible ideal gas
* ...
* and not constant value

genehhz · February 25, 2019, 21:24

Thank you so much!

February 15, 2019, 03:18	Solver Type	#1
genehhz New Member gene Join Date: Feb 2019 Posts: 5 Rep Power: 7	I would appreciate if anyone could advise me the type of solver to use in the fluent to simulate the following conditions: An well regulated HVAC system operating in the populated working office desk room. I am interested in the air flow distribution as well as the thermal load generated by each human in order to determine the human thermal comfort. What type of solver should I use and how do I activate and simulate the buoyancy effect of the air. Air Velocity is about 0.2 - 2 m/s. Thank You

February 18, 2019, 06:45		#4
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,681 Rep Power: 66	My recommendation is you pick. =) Seriously, all of them work (except constant). It's just a matter of how you like to model your problem. MKuhn likes this.

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February 15, 2019, 08:46		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,681 Rep Power: 66	Not enough info to say... All of the solvers will work. But I would recommend to start with steady, pressure-based until you find out otherwise. Enable gravity and make sure you select something for the equation of state for density that's not constant.

February 17, 2019, 08:22		#3
genehhz New Member gene Join Date: Feb 2019 Posts: 5 Rep Power: 7	May I know what equation of state would you recommend

February 18, 2019, 07:37		#5
MKuhn Senior Member Moritz Kuhn Join Date: Apr 2010 Location: Germany, Dresden Posts: 207 Rep Power: 17	Material properties --> density --> * ideal gas * incompressible ideal gas * ... * and not constant value

February 25, 2019, 21:24		#6
genehhz New Member gene Join Date: Feb 2019 Posts: 5 Rep Power: 7	Thank you so much!