University of Surrey Environmental Flow (EnFlo) Wind Tunnel
University of SurreySurrey
NWTF lists the University of Surrey Environmental Flow (EnFlo) laboratory as a meteorological wind tunnel in Surrey. Its current page says it simulates atmospheric boundary-layer conditions at laboratory scale for flow and dispersion processes, with inlet-flow and surface-heating/cooling systems for neutral, stable and unstable boundary layers and neutral and stable free flows.
Reviewed by Arc · About this review
Key facts
- Published facility identity and purpose
- NWTF identifies Environmental Flow (EnFlo) at the University of Surrey and says the laboratory was established to simulate atmospheric boundary-layer conditions at laboratory scale for flow and dispersion studies.
- Published facility status and access statement
- NWTF lists EnFlo as active and says it is open access, for up to 25% of time, to external UK and international researchers from university and industry.
Testing capabilities
Atmospheric boundary-layer simulation
NWTF says EnFlo has inlet-flow and surface-heating/cooling systems for neutral, stable and unstable boundary layers and neutral and stable free flows. It lists simulation of deep boundary layers with stability from stable to unstable at scales of about 1:200 to 1:1000.
Flow, dispersion and flux measurement
The facility page lists simultaneous measurement of mean and turbulent momentum, mass and heat fluxes; surface mean and fluctuating pressures; laser-Doppler anemometry and tracer-concentration scanning; and force-balance and traversing systems.
Equipment and published limits
| Specification | Published value | Conditions |
|---|---|---|
| Published working-section dimensions and flow-speed range | 20 m × 3.5 m × 1.5 m; 0.5 m/s to 5 m/s maximum flow speed | These are published facility figures. Confirm the usable model envelope, boundary-layer profile, heating/cooling configuration, measurement setup and applicable flow conditions for a particular programme. |
| Published temperature-difference range | +100 K to -60 K | NWTF attributes this range to temperature differences for surface and airflow in stable and unstable boundary-layer simulation. It is not presented as a universal or guaranteed test condition. |
Access and contact
NWTF says EnFlo is open access, for up to 25% of time, to external researchers in the UK and abroad from university and industry, and links to its contact route. The NWTF contact page invites facilities enquiries and asks for requested facility type, model dimensions, measurements, testing days and preferred timing. Confirm technical suitability, applicable access terms, availability, safety requirements, price, lead time and acceptance directly with NWTF.
Facility contact
- Address
- Surrey
United Kingdom - Website
- Official test house website
Standards and accreditation
Public information not available. Contact test facility provider for more information.
What to confirm with the facility
- Published dimensions, flow-speed and temperature-difference figures do not establish the usable conditions for a particular model, boundary-layer profile, heating/cooling arrangement, measurement plan or test condition. Confirm those details with the facility.
Before requesting a test
Public information not available. Contact test facility provider for more information.
Frequently asked questions
Public information not available. Contact test facility provider for more information.
Related testing facilities
Public information not available. Contact test facility provider for more information.
Further reading
Public information not available. Contact test facility provider for more information.
Sources and review
Arc reviewed the linked NWTF facility and contact pages on 30 September 2026 by direct HTTP retrieval. This is a review of published information, not a facility inspection, test witnessing or confirmation of availability. Confirm model suitability, technical conditions and scheduling with NWTF.
Arc publishes this directory entry and does not operate the test facility. Suggest a correction to Arc with a supporting source.
University of Surrey Environmental Flow (EnFlo)
NWTF’s current facility page is used for EnFlo identity, University of Surrey association, Surrey location, active status, published atmospheric-flow capability, technical figures, listed measurement systems and open-access statement. It does not state accreditation, a booking commitment, general availability, price, lead time or acceptance for a particular programme.
NWTF’s current contact page provides a facilities-enquiry route and lists information it asks prospective users to provide. It does not confirm availability or acceptance at this specific facility.