Search found 54 matches

by harshadj
Fri May 12, 2017 8:16 am
Forum: MicroFlo
Topic: Swirl Diffuser
Replies: 3
Views: 8799

Re: Swirl Diffuser

Swirl diffuser will require a mesh that is finer than for other diffusers.
by harshadj
Wed Feb 22, 2017 2:08 pm
Forum: MicroFlo
Topic: External and internal simulation
Replies: 2
Views: 6158

Re: External and internal simulation

Unfortunately, you cannot see internal results in external simulation for MicroFlo. even if the opening is set to 'open', MicroFlo external simulation will model it as a closed.
by harshadj
Tue Feb 21, 2017 2:56 pm
Forum: MicroFlo
Topic: What's the best way to model supply and extract?
Replies: 2
Views: 6029

Re: What's the best way to model supply and extract?

Supply and extract fans cannot be imported directly. You can import boundary conditions (temperature, gains and any macroFlo openings). You can then note the air flow rates from the HVAC results and apply them as a suitable supply and extract boundary conditions in the model at suitable locations.
by harshadj
Thu Aug 18, 2016 8:00 am
Forum: MicroFlo
Topic: Disappearing assigned gains
Replies: 2
Views: 5893

Re: Disappearing assigned gains

What version of VE are you using?
by harshadj
Thu Aug 18, 2016 8:00 am
Forum: MicroFlo
Topic: People Heat Gains and CO2
Replies: 2
Views: 6285

Re: People Heat Gains and CO2

CO2 source can be added only to a source component. Heat gain can be applied to both solid and source components.

You can surround a solid person component with a CO2 source component.

Just out of curiosity, how many such components are you adding?

Try not to add too many. If you are planning on ...
by harshadj
Tue Jul 19, 2016 10:35 am
Forum: MicroFlo
Topic: Holes not appearing on CFD
Replies: 2
Views: 6131

Re: Holes not appearing on CFD

MicroFlo only recognises one hole per surface. If you have multiple holes per surface, you will have to split and reconnect the space in such a way that there is only on hole per surface.

Using constant eff viscosity model tends to produce a more diffuse flow field as compared to using k-e. You may ...
by harshadj
Wed Jul 06, 2016 12:55 pm
Forum: MicroFlo
Topic: Modelling car park with jet fans in Microflow
Replies: 3
Views: 6553

Re: Modelling car park with jet fans in Microflow

It looks like the solver diverged. This could happen mainly due to grid quality used for the simulation.

Recommended grid quality is to keep maximum cell aspect ratio under 10.

Also as far as possible, keep the supplies and extracts on planes which are parallel to coordinate axes plane. Align the ...
by harshadj
Wed Jul 06, 2016 9:46 am
Forum: MicroFlo
Topic: Modelling car park with jet fans in Microflow
Replies: 3
Views: 6553

Re: Modelling car park with jet fans in Microflow

The example quoted is not from MicroFlo. It was done by the consulting department using a different software as requested by the client.

MicroFlo can do axial jet fans using the fan interface boundary as described in the user manual.
by harshadj
Thu Apr 28, 2016 8:24 am
Forum: MicroFlo
Topic: Simulating concrete curing chamber
Replies: 1
Views: 5949

Re: Simulating concrete curing chamber

You could add the concrete blocks as a solid source of heat with an constant output or a constant temperature using components.

If you are talking about simulating the cooling process with changing heat output and/or temperature, that is a transient CFD simulation and MicroFlo can only do steady ...
by harshadj
Fri Feb 26, 2016 3:02 pm
Forum: MicroFlo
Topic: Apache system setpoint influence
Replies: 3
Views: 6403

Re: Apache system setpoint influence

Yes, you are right that would be a difficult client to deal with.

But you have to remember, the only way the room is going to achieve 22C is going to be with those boundary conditions that you imported.

The boundary conditions in MicroFlo are fixed. e.g. lets say a wall was set to 60C and air is ...