Top to Bottom: Reducing Tall Building Uncertainties Via Full Environmental and Microclimate Analysis

Session: E: Air Quality and Microclimate

Duncan PhillipsProject image

Duncan Phillips
Principal, RWDI
Ontario

Simulation of buildings is becoming increasingly common. However, it is often wind that is simulated as the low hanging fruit. Anyone with a CFD package believes they can run a wind simulation. Others with more knowledge apply brute force to the problem but can also be off because they cannot adequately calibrate their CFD methodology.

The issue to be discussed here is "Is that the best you can do"? Computer simulation offers a rich range of opportunities to test and simulate many climactic impacts, at the bottom and top of a tall building. In this way, the microclimate at all levels of the building can be optimised for people. It requires that the analysis be comprehensive, timely and accurate. Failure on one of these renders the information less useful to worthless.

This presentation therefore covers the following items through the use of case studies:
- Understanding what can be simulated - how windy, stuffy, chilly, bright, smelly and noisy are the amenities around the building;
- Things to be aware of during your wind simulation - making them better;
- The benefits of adding height specific thermal comfort, wind driven rain, solar shading and glare to the analysis;
- Better ways to analyze that microclimate information to leverage statistics and make better decisions for annual conditions not just the worst day; and
- If we stretch, how do we simulate typhoons, global climate change and other extreme events.