Dear all I have investigated my thesis into design of a double skin facade which uses some special plants inside its cavity for indoor air purification. we have no air transition between indoor space and out. indoor air will be coerced to enter the cavity and after being purified by plants, it will be conveyed back to the zone. does anyone know how to create a computer model ? I have tried Design Builder, though I haven't reach to a concrete result yet. Regards to all