Wind Simulation

Building design features that Affect Natural ventilation Performance

Specific morphological and geometrical Urban variables can affect the wind flow behavior in urban area environment, such that the overall wind flow velocity is altered.
Through computational wind simulation on a large number of building design case studies during the rendering of our CFD consulting services, we can get valuable insights into how variations of building design features correlate with its natural ventilation performance.
These factors include the shape of building geometry, height elevation, building land site coverage, facade area, arrangement orientation and permeability.
 

1. Collective Building Orientation

The collective Building orientation needs to be orientated such that it enables the predominant wind directions to naturally flow through the entire city. It is not ideal to build ate too many physical building obstacles which can result in an uneven distribution of wind throughout the densely populated urban metropolitan area.
 

2. Building Shape Geometry

Relative Placement of Sharp Edges

The location placement of building sharp edges relative to each other can influence the fluid dynamic vortex structures at the wake regions where the external wind flow goes over or above buildings.
In addition, it is important to note that the Shape and Profile design of the Building roof can determine influence whether natural wind flow can enter the in-between building spaces.
Certain building shapes and design does encourage wind to flow through them while others tend to retain or deflect wind flow more.
 

Deep Canyon Designs

Natural Wind fluid flow will be discouraged when a building has deep and long canyons designs.
As a general industry practice, building designs with long slabs that shield the wind entrance should be avoided as it results in a long time for wind to exit.
 

3. Building Site Coverage & Facade Area

A higher building site coverage and larger facades area generally represent itself more as a physical obstacle which can block the predominant Wind flow distribution and slow downwind speed throughout the urban city area.
 

4. Building Relative Arrangement

As a guideline, buildings should always be arranged to give clear passage for the wind to flow through the city. When there are limited choices available for direct clear openings, staggering the buildings will help the wind flow to permeate through the urban fabric indirectly.
 

5. Building Height

Variations in building height are largely beneficial to facilitating the healthy level of wind flow volume between building spaces to encourage natural ventilation.
In contrast, a cluster of buildings which has uniform height does not give the wind enough leading spaces for dissipation of flow turbulence by eliminating interactions between flow disturbances and building physical boundaries.

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In conclusion, CFD wind simulation benefits engineering design of building aerodynamics by significantly cutting down the time and costs which would otherwise be spent on parametric simulation and design exploration case studies. Although actual physical Wind tunnel testing plays an important role in design validation, it is extremely costly, time-consuming. This makes it not practical as a test solution method.
 
Explore what our Wind simulation and CFD services can do for your company project today by calling us at +6581822236 for a no obligation discussion of your needs. If you have any questions or queries, our knowledgeable and friendly consultants will be happy to assist you and understand more about your needs and requirements.
Alternatively, for quote request, simply email us your technical specifications & requirements to info@broadtechengineering.com