Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Wind tunnel tests could lead to healthier towns and cities

16.12.2003


It’s hardly an appealing thought but the overpowering fragrance of mothballs in a large wind tunnel could provide the key to improving air quality in our towns and cities.

The tests will improve our understanding of how pollution and heat behave at street level so that more effective ventilation methods can be developed.

The research will be carried out by scientists at the University of Reading in collaboration with EnFlo, based at the University of Surrey, with funding from the Engineering and Physical Sciences Research Council (EPSRC).



In towns and cities, pollution and heat released below building height (e.g. from cars and buildings) can be trapped at street level until ventilated to the air above. This can cause pollution “hotspots” which affect sufferers from respiratory diseases such as asthma; it can also contribute to an uncomfortably warm urban climate.

The new research will focus on the ventilation process. This process depends on street layout, wind speed and other factors, and understanding it is vital to taking effective action to improve urban climate and air quality.

The project will centre on wind tunnel tests that simulate airflow in urban areas. Cube and bar shapes representing a variety of urban settings will be placed in a wind tunnel and covered in naphthalene (an aromatic hydrocarbon used in mothballs), which is carried by airflow in a similar way to heat and pollution. By measuring the net loss of naphthalene after air has flowed over it, the rate of ventilation for the airflow and urban layout under examination can be calculated.

Interpretation of the results, which will require expertise in fluid dynamics, turbulence, heat transfer and meteorology, will enable the impact of different factors on ventilation to be assessed. An innovative feature of the research will involve the use of sensors to detect naphthalene concentrations. Deploying the sensors successfully will require trial and error, but will ultimately enable the extent and duration of “hotspots” to be determined.

The project team has already found that ventilation depends on street width, building height and the precise location of the pollution or heat source. Dr Janet Barlow, who is leading the team at the University of Reading’s Department of Meteorology, says: “Better understanding of heat and pollution ventilation rates will help inform the decision-making of architects and town planners. This should help to promote more sustainable, more comfortable and healthier urban environments”.

Jane Reck | EPSRC
Further information:
http://www.epsrc.ac.uk

More articles from Ecology, The Environment and Conservation:

nachricht Species may appear deceptively resilient to climate change
24.11.2017 | University of California - Davis

nachricht Scientists team up on study to save endangered African penguins
16.11.2017 | Florida Atlantic University

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New proton record: Researchers measure magnetic moment with greatest possible precision

High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons

The magnetic moment of an individual proton is inconceivably small, but can still be quantified. The basis for undertaking this measurement was laid over ten...

Im Focus: Frictional Heat Powers Hydrothermal Activity on Enceladus

Computer simulation shows how the icy moon heats water in a porous rock core

Heat from the friction of rocks caused by tidal forces could be the “engine” for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that...

Im Focus: Nanoparticles help with malaria diagnosis – new rapid test in development

The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.

Malaria is caused by parasites transmitted by mosquito bite. The most dangerous form of malaria is malaria tropica. Left untreated, it is fatal in most cases....

Im Focus: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

IceCube experiment finds Earth can block high-energy particles from nuclear reactions

24.11.2017 | Physics and Astronomy

A 'half-hearted' solution to one-sided heart failure

24.11.2017 | Health and Medicine

Heidelberg Researchers Study Unique Underwater Stalactites

24.11.2017 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>