PhD Seminar Series: Leonidas Tsichritzis

The next PhD Seminar will be given by Leonidas Tsichritzis on Wednesday 14th February at 4PM in E.Barlow (Eliot College).

The effect of height related urban morphology characteristics on pedestrian level winds

The evaluation of wind environment has gained a lot attention lately as it has been associated with issues relevant to urban climate quality such as heat island intensity and air pollution, which many large metropolitan areas are facing and affect humans’ health and prosperity. Within the morphological and climatic context of Greater London this study aims to associate pedestrian level wind comfort with urban morphology as well as with wind directions. Approximate 20 case studies representing real urban areas with dimensions 500x500m, which receive a range of morphological characteristics yet medium to high building coverages, were examined through CFD simulations. For every single case study eight wind directions were tested while the BRE wind comfort criteria and guidelines were used for assessing wind comfort for the different types of outdoor human activities. The results of the study provide valuable information showing some influence between the pedestrian level wind environment of London and building morphology characteristics which contain information relevant to the height of buildings.

Leonidas Tsichritzis is a 3rd year PhD Student and Graduate Teaching Assistant. Prior to joining the Centre for Architecture and Sustainable Environment in order to conduct his own research, awarded with a GTA Scholarship, Leonidas has worked as an architect and environmental design consultant in Athens.
His research interests are covering a wide area of sustainable and environmental design in terms of promoting the energy autonomy and the decarbonisation of built environment as well as pedestrian comfort in local but also in urban scale. More particularly, his research is focusing on assessing and classifying the pedestrian level urban wind environment as far as concerned to wind comfort and safety for different types of outdoor human activities by evaluating designated characteristics of urban geometry which dominate the wind flows around buildings for the climatic and urban context of London.

CASE PhD Seminar: Leonidas Tsichritzis

CASE student Leonidas Tsichritzis will be holding a PhD Seminar on 10 May at 3.30PM in room W1-SR2.

The effect of urban geometry on pedestrian level winds

The Preliminary Results

Urban geometry influences almost exclusively the wind speeds at lower levels of the urban canopy layer affecting pedestrians’ comfort and the quality of urban environment. Such considerations have been taken into account from architects and planners in cold climatic context with very high buildings, such as in northern America while more recently such importance is being recognised in European temperate climates. With a focus on London, this study aims to assess the preliminary results obtained through CFD simulations, the magnitude of the impact of urban geometry on pedestrian level wind environment indicating the characteristics of urban geometry that dominate wind speeds around buildings.

The main objectives of this talk will be the following:

  • Urban geometry analysis
  • Methodology
  • Sensitivity studies
  • Initial results

KSA CASE Researchers speak at 31st Passive and Low Energy Architecture Conference in Bologna

KSA had the largest international research presence at the 31st Passive and Low Energy Architecture (PLEA) conference in Bologna, Italy on 9-11 September 2015. Attended by over 300 delegates from all over the world, six researchers from KSA’s Centre for Architecture and the Sustainable Environment  (CASE) delivered research papers on a range of topics:

Michael Adaji
An investigation into thermal comfort in residential buildings in the hot humid climate of Sub-Saharan Africa: a field study in Abuja-Nigeria.

Keith Bothwell
Pines Calyx earth tube performance.

Christina Chatzipoulka
Comparing the solar performance of urban forms in London.

Carolina Vasilikou
Thermal perception of pedestrians moving in interconnected urban spaces: adaptive thermal comfort in irregular spatial sequences in Rome and London.

Leonidas Tsichritzis
The glazing of balconies as a retrofitting solution for reducing the heating load of the adjacent room in Athens. [Recently joined CASE from the Architectural Association, London]

Richard Watkins
The performance of natural ventilation in a dance studio – lessons from tracer gas measurements and control integration.

For more information, please see:
PLEA 2015 conference: