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The IBPSA September Twofer

PowerPoint Presentation

The International Building Performance Simulation Association – Houston Chapter invites you to our dual September presentation on September 12th 2016 at 5:30 pm at Kirksey Architecture:

The first part will be an Introduction to Cradle CFD for Building & Architecture by Cradle, a software package specializing in Computer Fluid Dynamics. This will be presented by Ben Cook from Cradle Software Co.

From Cradle:

Computational Fluid Dynamics (CFD) is one of the most sophisticated ways to evaluate how the building design matches the goals of the designer and engineer. CFD helps engineers and architects to understand the otherwise unknown, macro and micro environments of a building’s design. Building simulation analysts often find CFD software challenging to use due to the complexity of the simulation and the over whelming inputs required for building and architecture simulations.  Cradle has catered to architectures by providing them with a practical CFD software for their applications. This presentation will provide an insight into Cradle’s deep rich history in the building and architecture industry.


The second part will be a report about this year’s ASHRAE-IBPSA SIMBuild Conference followed by Kapil’s and Alfonso’s presentation “Comparison Of Simulation-Based Metrics In LEED & WELL Rating Systems”, which they presented at the Conference in Salt Lake City.

From their presentation’s abstract:

GBCI has launched a host of Building Performance Standards. WELL Building Standard, which focuses on Occupant Health, is already under evaluation by many AEC professionals. WELL has many ‘common grounds’ with LEED, especially with those under Indoor Environmental Quality Credits. However, there are many other LEED Credits that get impacted by WELL metrics. Using simulation models from two LEED buildings in Houston, TX – an office building and an educational building – a comparison of simulation-based metrics that can affect WELL and LEED Scores would be presented.

There will be a 30 minute networking session prior to the presentations, which will start at 6:00 pm. This event is free of charge. Parking is provided.

PLEASE RSVP HERE or by email to

Climate Change: Past, Present, Future with Dr. Jud Partin

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The Houston Chapter of the International Building Performance Simulation Association in conjunction with Texas Gulf Coast chapter of the U.S. Green Building Council presents Jud Partin, Ph.D, a paleoclimatologist with the University of Texas atAustin, to present his findings regarding externally-forced and internally-driven changes that affect the earth’s climate.

Partin uses paleoclimate archives to help evaluate both current climate trends and climate models, which are used to project future changes. He focuses on producing long records of hydroclimate using speleothems, corals, and forams from the tropics as well as quantifying the uncertainty of climate reconstructions and then comparing the paleoclimate data to climate model output.


One of the inter-disciplinary events that IBPSA-USA, Houston & USGBC Texas Gulf Coast Chapter organized this month was Dr. Dru Crawley’s talk on Building Performance Simulation. ASHRAE Houston Chapter also jointly sponsored this meeting with Association of Energy Engineers .

Over the last 50 years, Building Simulation has evolved into a powerful tool. It allows easy comparison of the energy and environmental performance of many hundreds of design or retrofit options. Dr. Dru Crawley from Bentley Systems, touched upon the development of energy simulation tools since 1970s and briefed about various algorithms being currently used in Energy & Lighting/Daylighting Simulation software. He talked at length about where the BIM industry is headed towards integration of Modeled & Real data, and various technological advances that the building-industry is undergoing right now.

The meeting was held at Green Building Resource Center.


BEHIND THE F.A.C.E. – Façade Analysis by Comparisons and Evaluations in the urban context


Mili Kyropoulou from HKS Line presented at the October meeting. The objective of the her study was the investigation of the residential urban multi-storey building, with reference to the Greek “polykatoikias”, the most typical typology in the Greek urban environment. The talk focused on the examination of the features and the potential of the façade element of the multi-storey buildings, as this is the physical boundary between the interior and the exterior conditions and for this typology is almost the only exposed surface of each unit. The comparative indicators of the assessment in this study were the daylight availability (illuminance) and the thermal performance (heating and cooling loads), which lead to a continuous attempt of establishing a balance between the two. Image 1

Three Little Buildings: The Story of Envelope Performance

IBPSA-USA, Houston Chapter broke its long lull of inactivity in May this year. We combined our chapter meeting with the monthly meetings at AIA’s Building Enclosure Council. The presentation was titled “Three Little Buildings: The Story of Envelope Performance”. Through analysis of three case studies designed by Kirksey Architecture, the speakers explored lifecycle costs and energy performance implications of various envelope-related energy efficiency strategies.  The analysis focused on the results of an iterative energy modeling process, which identified useful metrics that are not typically a part of building and facade design. The presentation was delivered by Kapil Upadhyaya, Colley Hodges & Alfonso Hernandez.


Past Events

Bimonthly Meeting

Date: Thursday, December  6, 2012

Location: Kirksey Architecture

Topic: Understanding Underground, Alfonso Hernandez, Kirksey Architecture


Bimonthly Meeting

Date: Tuesday, June 19, 2012

Location: Kirksey Architecture

Topic: Sustainability Tools for BIM, Nathan Kegel, IES

IBPSA-Houston-Poster jpg

Bimonthly Meeting

Date: Thursday,  Feb 29, 2012

Location: Kirksey Architecture

Topic: Evaluation of Building Enclosure using WUFI, Joe Fong, Walter P. Moore


Bimonthly Meeting

Date: Wednesday, November 9, 2011

Location: Kirksey Architecture

Topic: Practical Solar Thermal Chilled Water, Keith Leavell, Yazaki Energy Systems

IBPSA-11 October Meeting Update

Bimonthly Meeting

Date: Wednesday, August 24, 2011

Location: RLB Engineers

Topic: Modeling Solar Production

IBPSA-11 August Meeting

Bimonthly Meeting

Date: Wednesday, June 22, 2011

Location: CHP & Associates

Topic: LEED Energy Modeling – A Reviewers Perspective

IBPSA-11 May Meeting

Bimonthly Meeting

Date: Wednesday, April 13, 2011

Location: Houston AIA Architecture Center

Topic: BIM for Energy Analysis

IBPSA-11 April Meeting

Quarterly Meeting

Date: Wednesday, December 8, 2010

Location: Kirksey

Topic: CFD with Tileflow

IBPSA-USA Houston December Meeting

Quarterly Meeting

Date: Wednesday, September 29, 2010

Location: Kirksey

Topic: Ecotect


Quarterly Meeting

Date: Wednesday, June 30, 2010

Location: Rice & Gardner Consultants

Topic: Trane Trace


Quarterly Meeting

Date: Wednesday, March 31, 2010

Location: Gensler

Topic: Simulation Tools, 2009-2010 in retrospect

IBPSA-Houston-Poster-3 copy

Quarterly Meeting

Date: Wednesday, June 19, 2009

Location: Kirksey Architecture

Topic: CFD Simulation with StarCCM+