IES-VE User Forum

Components are just a way to add extra geometry, boundary conditions and sources into a CFD model - stuff that cannot be added to one of the surfaces of the main VE zone (wall/ceiling/floors/windows and doors).

There are 3 CFD components in the component library by default, called: 1) radiator, 2 ...

Hi MaPenn,

Have you seen the film Spinal Tap? There is a scene when the guitarist is explaining why his amp is so good, saying that the volume goes upto 11 while all the other amps only go up to 10. The interviewer asks why not make 10 the highest volume and the guitarist says no my amp is better ...

A typical way of modelling the cabinets in a data centre using a general purpose CFD code is to

1) have an outflow boundary condition in the cold aisle that draws air out of the computational domain
2) a inflow boundary condition in the hot aisle which put the same amount of air back into the ...

Make sure you have the latest version of the VE as there was an issue importing boundary conditions with a couple of the v6x versions.

The boundary conditions are set in two places in Microflo.

1) For external walls, ceilings and floors the boundary condition is set in "Surface" mode, see the ...

The tree components in the VE are for the Radiance module, not for the Microflo module. If you look down in the bottom right of the component modeller window you will see they are called "Object" components, not "Standard" components like I said before. The CFD components are called "CFD".

> is it ...

Microflo doesn't mesh components that aren't CFD components. Some of the components in the component library are for the Radiance module and are too complicated to be meshed by Microflo.

Components are designated as "standard" or "CFD" (if I remember correctly). Only CFD components are meshed ...

There is a way to do this if a steady state solution accurately models the physics.

For example, smoke production starts at t=0secs and stops at t=10mins and you are interested in how the smoke concentration climbs and then falls after the smoke source stops at t=10mins then only a transient CFD ...

Q> I want to model this in Microflo but because I am modelling louvres the "import opening flows" and "window opening position" is not really applicable. It is a louvre not a window.

Boundary conditions where air enters a Microflo model are set up as constant mass flux boundaries, usually called ...

You can. If your apacheSim/macroflo model has occupants then their CO2 production is automatically imported into Microflo and gets spread over the whole zone volume - from floor to ceiling height.

If you don't like that simplification you can add non-solid source components that release the same ...

How about using the age of air and air change effectiveness variables? Or if there are people in your model, the concentration of CO2?