The challenges of luxury wellness
The invisible comfort
that decides the return visit.
The sensory experience isn't promised — it's designed
A wellness center sells a promise: wellbeing, regeneration, quality. If the microclimate doesn't support it — if the pool is too humid, if the sauna doesn't breathe, if the hammam is uneven — the promise doesn't hold. And clients understand it before they can even explain it.
Every environment has its own thermal logic
Hammams, indoor pools, treatment rooms, relaxation areas: every wellness environment has different and specific comfort parameters. A standard solution that ignores these differences produces an experience that works only halfway — at best.
Mean age of air is the hidden parameter
Even with technically correct ventilation systems, stagnation zones can form at specific points of a wellness space. The guest who feels 'heavy' or 'tired' is perceiving exactly that problem — without being able to name it.
What we diagnose
Three dimensions of wellbeing.
All measurable — before opening.
Thermal Comfort by Zone
Temperature distribution in each specific wellness environment — pool, sauna, hammam, relaxation room — with optimal comfort parameters for each type.
Air Velocity and Perceived Comfort
Imperceptible drafts that can make even a correct temperature uncomfortable. Vertical thermal gradients that determine the uniformity of the experience.
Mean Age of Air and Exchange
The parameter that distinguishes a healthy environment from one that tires people without anyone knowing why. Verification of actual air quality and exchange per zone.
3D Visualization
Real air exchange for every zone
The parameter that reveals where air stagnates
The diagnosis in action
Every color is data.
Green is balance. Red is a risk.
The CFD color scale isn't aesthetic: every color represents a measured value. The diagnosis turns red zones into concrete interventions — before anyone perceives them the wrong way.
The diagnostic report includes optimization recommendations for every environment, directly translatable into system or layout changes before opening.
The problem, specifically
Heat and humidity
don't stay where you draw them.
In a spa wellbeing is physical and immediate: a sauna, a steam bath, a hot pool and a relaxation area follow one another within a few metres. Steam rises and stratifies, open doors create drafts, wet areas shed heat into dry ones. Guests don't know the terms, but they feel cold feet, a too-warm neck, heavy air at the end of the route.
Then there is air quality: where exchange is weak, pockets of stale air, high humidity and odours form. Guidelines say how much air is needed on average; they don't say where it arrives. The same room can meet its sizing and still be tiring to be in.
How CFD verifies it
The guest's route,
simulated before opening.
- 01
The layout of the route
We model the spaces in their real sequence: entrance, wet zones, hot areas, relaxation. Vents, grilles, doors and heat-exchanging surfaces are included.
- 02
Declared loads and conditions
Operating temperature and humidity, guest numbers, intended air flow rates: all agreed with you and recorded in the report.
- 03
Comfort and exchange by zone
We assess temperature distribution, air velocity at guest level and mean age of air, to find stratification and stagnation.
- 04
Corrections compared on the model
Moving a supply, changing a return or revising an opening is compared in simulation, before it becomes work in a finished structure.
What your project receives
Data readable by
designer, operator and engineer.
Maps by space
Temperature, velocity and mean age of air in the occupied zones, with critical areas highlighted.
Pockets identified
Where exchange is weak or stratification is marked, with the physical cause and the point to act on.
Alternatives compared
Each proposed change is simulated and compared with the design as drawn, so decisions rest on a reference.
Stated model limits
Assumptions and input data are written in the document. CFD reduces design uncertainty; it does not replace on-site commissioning.
Scope and timing depend on the number of spaces analysed and how defined the design is.
Frequently asked questions
What we get asked
before we begin.
What is CFD consulting for a spa and what is it for?
It is a fluid-dynamic simulation of the spaces along the wellness route: it shows how temperature, humidity and air distribute in the space. It identifies uncomfortable zones, stratification and stagnation at design stage.
Can you analyse a sauna, steam bath or indoor pool?
Yes, individually or as a route. Hot and wet rooms need careful assumptions on humidity and loads, which we agree with you and state in the report.
Does CFD verify the system sizing?
No, it complements it. Sizing establishes how much air and heat are needed; simulation shows where they arrive and how they move. Suggested changes must be validated by the HVAC designer.
Should it be done before opening, or on an existing facility too?
The most economical moment is at design stage. It can also help in a facility already open, where guests or staff report cold zones, heavy air or recurring condensation.
What data do you need to start?
Dimensioned plans and sections, the system layout and flow rates, main finishes, expected operating temperatures and humidity, and the number of guests to consider.
Can you guarantee comfort after opening?
No. We can reduce design uncertainty based on stated assumptions; the final result also depends on construction, commissioning and day-to-day management.
Further reading
To read more,
at your own pace.
From the journal
The REVELLUM Protocol
CFD Simulation in Five Phases.
From concept to delivery, no surprises.
CFD Diagnosis at Concept Stage
We define together the current state of the project and the expected comfort parameters, identifying airflow and thermal issues before fixing them has a cost.
Fluid Dynamics Simulation & 3D Model
We build the CFD model of your space, simulating the real behavior of air, temperature and environmental quality with the actual geometry and materials.
Thermal & Airflow Gap Analysis
We compare the simulated state against the ISO 7730 target. Every gap is quantified: you know exactly what's missing, where, and by how much.
CFD-Driven System Optimization
We translate the gaps into concrete interventions. Recommendations enter the project while changes are still inexpensive, not after construction.
ISO 7730 Technical Documentation
The optimized design is delivered with complete PMV/PPD documentation, giving the project team everything needed to proceed with certainty.
Let's begin
The moment it costs little
is now. Before construction starts.
Tell us about your project. You'll receive a free preliminary assessment of where comfort risks might be hiding, within 24 hours, directly from Michele.
Not a generic quote. A specific answer to your specific project.