At the IBPSA Special Interest Forum in Sydney on July 14th, Dr Paul Bannister will be talking on supply air temperature control.  We asked Paul what sorts of insights we might expect from the talk.
“It’s been a bit of a voyage of discovery preparing the work for this talk “said Dr Bannister. “and I’d have to say, I don’t think it’s over yet.  To put this in context, the findings of the works so far show a reduction of 8% in energy use relative what I would have considered good to best practice.  That’s no small beer!”
So what role can simulation play in this? “The work so far has taken scores of simulations, which gives a level of insight that just can’t be achieved by fiddling with the metaphorical dials on a real building” say Paul. “That said, I think it’s increasingly possible to see where the balance between theory and practice is likely to play out in real-world implementation; all along I have been looking for something that gives optimum performance theoretically but can actually be implemented with real controls in a real buildings – and still work.”
To find out more, go to  the IBPSA Special Interest Forum “Energy Modelling in the Real World”, 5:30pm 14 July 2015 at the AECOM offices, L21 420 George St, Sydney.  Register by emailing to

It’s heartening to see that in spite of a senate gridlock that makes Australia’s senate issues look like a rather dainty garden party, the US has managed to pass legislation looking towards major steps for energy efficiency in the commercial buildings sector.  Who knows, in time they may even catch up with our NABERS and CBD schemes!

The IBPSA News Volume 25 No 1 is now available at

Features include:

  • Updates on BS2015 in Hyderabad, India
  • Interviews with Christoph van Treeck and Dirk Müller about research at RWTH Aachen
  • Information about the newly elected IBPSA Board
  • Software news about CommONEnergy, an Integrated Modelling Environment for shopping malls, and a DesignBuilder update
  • Global community news from IBPSA affiliates in Canada, Egypt, Italy, Japan, Korea, Nordic countries, Netherlands & Flanders, Switzerland, and the USA
  • IBPSA related events, e.g. 7 conferences and other events for your diary.

IBPSA-Australasia is keen to improve the collaboration, knowledge sharing and networking opportunities for our members and are asking for your feedback. After the first extremely successful forum on CFD – it is clear our members are keen to see and get involved in more. So could you take 10 minutes to fill in our survey.

The survey will be open until 5pm, 24 April 2015

IBPSA – Australasia Survey –

The Building Codes Assistance Project (BCAP) is asking assistance of ASHRAE members in completing a survey about the current use of energy modeling software by design professionals.  While modeling at any stage provides valuable data on how much energy a building will consume, energy modeling during the conceptual stage influences design decisions, promotes cost-effective energy savings, and facilitates energy code compliance in the later phases of the project.

More design teams are choosing to pursue energy code compliance using the performance path as opposed to the prescriptive path.  The performance path requires the use of computer simulations of operational energy usage.

BCAP will use the results of this survey to identify and remove barriers to the widespread use of building energy modeling software, so that even more design professionals will have the option of choosing the performance path.  Feedback will better prepare professionals for the evolving demands of an industry increasingly concerned with energy usage.

To access the survey go to  The survey closes April 30.

Based on the outcome of the election held in late 2014, the new IBPSA Board of Directors is now in place.  Half of the elected Directors will serve for 1 year and the rest for 2 years (term lengths were set by random draw).  Half of the Board will be elected each year from now on,  starting in the fall of 2015.

Thank you for your support of IBPSA.

Charles S. Barnaby



Officers (selected by the Board)


  • President: Charles S. Barnaby (USA)
  • Vice-President: Lori McElroy (Scotland)
  • Secretary: Pieter de Wilde (England)
  • Treasurer: Michael Wetter (USA)


At-Large Directors


2-year terms

  • Paul Bannister (Australasia)
  • Charles Barnaby (USA)
  • Ian Beausoleil-Morrison (Canada)
  • Matthias Haase (Nordic)
  • Christoph van Treeck (Germany)


1-year terms

  • Drury Crawley (USA)
  • Lori McElroy (Scotland)
  • Andrea Gasparella (Italy)
  • Christina Hopfe (England)
  • Michael Wetter (USA)


Affiliate  Directors
2-year terms

  • William O’Brien (Canada)
  • Jose Norberto Guerra Ramirez (Chile)
  • Martin Bartak (Czech Republic)
  • Milorad Bojić (Danube)
  • Mohammad Fahmy Ramadan (Egypt)
  • Pieter de Wilde (England)
  • Christoph Nytsch-Geusen (Germany)
  • Donal Finn (Ireland)
  • Kwang Woo Kim (Korea)
  • Ala Hasan (Nordic)
  • Piotr Narowski (Poland)
  • Roman Rabenseifer (Slovakia)
  • Joseph Deringer (USA)


1-year terms

  • Raul Ajmat (Argentina)
  • Quentin Jackson (Australasia)
  • Nathan Mendes (Brazil)
  • Da Yan (China)
  • Etienne Wurtz (France)
  • Rajan Rawal (India)
  • Vincenzo Corrado (Italy)
  • Yoshiyuki Shimoda (Japan)
  • Wim Plokker Msc (Netherlands + Flanders)
  • Nick Kelly (Scotland)
  • Gerhard Zweifel (Switzerland)
  • Ayşe Zerrin Yılmaz (Turkey)
  • Khaled Al-Sallal (UAE)

On February 10th 2015, IBPSA Australasia held its first special interest evening, which aims to get more people in the building performance simulation industry talking to one another and discussing hot topics. This session was focussed around computational fluid dynamics, or CFD, in the built environment and hosted three guest speakers; Nicki Parker (IBPSA Australasia Vice President) from AECOM, Jason Gaekwad, formerly of Aurecon, and Andrew Ooi from the University of Melbourne. The presentations varied from performance in data centres, to computational wind engineering, and complex physics in double skin facades.

Over 20 attendees participated in the event in Melbourne, with several people signing up for IBPSA membership. There was some great feedback and a big appetite for these events in the future. IBPSA Australasia’s next event will be held in Sydney in July, and focus on energy modelling. It is the aim of the committee to engage with members on a more regular basis, running local networking and learning events. Hopefully this will raise the standard and profile of building simulation in the Australian construction industry.

Download CFD Presentations (22.7mb)

The recent IBPSA Board of Directors elections were held and the members of the newly elected Board of Directors are listed below (note Paul and Quentin made it!):

At-Large Directors
Ian Beausoleil-Morrison
Michael Wetter
Lori Mc Elroy
Christina Hopfe
Drury Crawley
Charles Barnaby
Andrea Gasparella
Christoph van Treeck
Paul Bannister
Matthias Haase

Affiliate Directors
Raul Ajmat (Argentina)
Quentin Jackson (Australasia)
Nathan Mendes (Brazil)
William O’Brien (Canada)
Jose Norberto Guerra Ramirez (Chile)
Da Yan (China)
Martin Bartak (Czech Republic)
Milorad Bojić (Danube)
Mohammad Fahmy Ramadan (Egypt)
Pieter De Wilde (England)
Etienne Wurtz (France)
Christoph Nytsch-Geusen (Germany)
Rajan Rawal (India)
Donal Finn (Ireland)
Vincenzo Corrado (Italia)
Yoshiyuki Shimoda (Japan)
Kwang Woo Kim (Korea)
Wim Plokker Msc (Netherlands + Flanders)
Ala Hasan (Nordic)
Piotr Narowski (Poland)
Nick Kelly (Scotland)
Roman Rabenseifer (Slovakia)
Gerhard Zweifel (Switzerland)
Ayşe Zerrin Yılmaz (Turkey)
Khaled Al-Sallal (UAE)
Joseph Deringer (USA)

Come along to hear our three guest speakers talk about their views on the use of computational fluid dynamics in the industry and how they use CFD in their day-to-day work. Each guest will present on what they believe are the key tricks of the trade, providing case studies of where CFD can really add value both commercially and in a research environment.


Nicki Parker (AECOM)

Nicki works on a wide range of projects from pedestrian comfort studies through to large scale energy strategies, however one of the most interesting sectors she works in is mission critical data centres. Nicki will introduce some of the different types of cooling she has simulated using CFD, leading on the main focus of her presentation – what happens during cooling unit failure?

Andrew Ooi (Uni of Melbourne)

Andrew will discuss turbulent flows driven by gravity and how this can affect heat transfer in the built environment. His presentation will concentrate some of the formulas that industry have used and how recent findings and data have provided insight into why these formulae might not be applicable when buoyancy effects are important.

Jason Gaekwad (Aurecon)

Last but not least, Jason will present on the use of CFD in wind engineering, covering the fundamentals of atmospheric boundary layer flows, as well as the interaction of wind with buildings and the urban environment. Different applications will be discussed, along with potential issues in using CFD for this type of analysis.

Register by emailing Quentin –

Download flyer now – ibpsa_cfd_13Jan2015

This is a reminder that the Board of Directors of IBPSA is seeking nominations for the 2015 Class of Fellows. The IBPSA membership grade of Fellow recognizes individuals who are:

A member who has attained distinction in the field of building performance simulation, or in the allied arts or sciences, or in teaching of major courses in said arts and sciences, or who by way of research, simulation code development, original work, or application of building simulation on projects of a significant scope, has made substantial contribution to said arts and sciences, and has been active in the field for at least ten (10) years”.

The IBPSA Board of Directors elects new Fellows on a two-year cycle, culminating with recognition at the biennial Building Simulation conference, which will take place in Hyderabad, India next year.

Nominations may be made by IBPSA members other than the nominee. The application package will include details of the nominee’s qualifications, a CV, supporting letters, and other relevant materials. The details of the nominee’s qualifications shall include summaries of accomplishments in one or more of the following categories: industrial leadership, research, simulation code development, application of building simulation on projects of significant scope, educational leadership, and significant technical contributions to the allied arts and sciences. The application form and instructions are available on the web at:


Nominations must be submitted via email to the Chair of the Awards and Fellows Committee, Pieter de Wilde, at The deadline for nominations is 31 January 2015. Please contact Pieter de Wilde to discuss a possible nomination if required.

Note that IBPSA also has calls open for the nominations for the three main IPBSA Awards (deadline 14 March 2015)  as well as Student Travel Awards (deadline 15 April 2015). Details on these other categories can be found at through the ‘awards’ page.

Pieter de Wilde

Chair of the IBPSA Awards and Fellows Committee