From Building Aerodynamics


Experimentation in aerodynamics started with Wind Tunnels, and still the majority of the experimental work is carried out in them. The new contender is Computer Fluid Dynamics (CFD): this science is developing and has its own advocates: the author is not one of these. Consequently any reader wishing to learn about CFD and its application to Building Aerodynamics will have to consult a book on that subject, he will find no help in these pages.

Building Aerodynamics is a very experimental subject, and has grown out of Aircraft Aerodynamics. The description of the wind is very complex, compared to the still air through which aircraft fly for most of their life. The wind has shear and turbulence which can only be described in statistical terms, and can approach from any direction. The shapes used are bluff shapes which cause the air to separate as it flows around them, rather than smooth sleek shapes, like wings and fuselages, to which the flow is attached.

Even with agreeable conditions, the aircraft aerodynamist had to resort to experimental measurements to quantify the parameters which theory showed were important

The aircraft engineers developed wind tunnel techniques which solved their problems satisfactorily, and, by the middle of the twentieth century, the body of techniques and experience was impressive.

By the middle of the twentieth century buildings, other than cathedral and similar buildings, were beginning to increase in size and reduce in weight so that wind loads began to form an important part of the...

Copyright Imperial College Press 2001 under license agreement with Books24x7

Products & Services
Pressure Scanners
Pressure scanners allow the signal delivered to an instrument to be scanned or switched between multiple pressure sensors. Multi-channel pressure scanners increases the throughput and productivity of costly instrumentation.
Serial Cables
Serial cables are used for the serial transmission of data. They support communication standards such as RS232, RS422, and RS485, as well as Fibre Channel, IEEE 1394 or FireWire® (Apple Computer, Inc.), and universal serial bus (USB).
Used and Refurbished Equipment
Used and refurbished equipment suppliers specialize in used and refurbished equipment and instruments. Suppliers may have the personnel and/or equipment needed to completely overhaul or rebuild equipment or instruments.
SCSI Switches
SCSI switches connect test points or devices to instruments for the testing, measuring, or monitoring industrial systems. Small computer system interface (SCSI) is an intelligent peripheral bus with a standard, device-independent protocol that allows many peripheral devices to be connected to the SCSI port.
Centronics Connectors
Centronics connectors are standard parallel interface devices for connecting printers and other peripherals such as portable disc drives, tape backup drives, and CD-ROM players to computers.

Topics of Interest

Overview This chapter gives a brief introduction to the statistics necessary for an understanding of the analyses performed on the data. The variation of a parameter with time will be called a...

Stepper motors are used in a wide variety of applications. They are prevalent in consumer office equipment such as printers, plotters, copiers, and scanners. Stepper motors are also used in automotive...

Overview Computer peripherals are devices or equipment added to the basic processor and main memory to facilitate human-machine interface and permit the computer to carry out control functions or...

Comparing Multiple Functions Among Devices September 1999 • Vol.7 Issue 9 Add To My Personal Library Comparing Multiple Functions Among Devices If you're building a small business or supplying...

SCSI (Small Computer Interface) is a bi-directional parallel peripheral bus used in computer systems of all sizes. It is used for computer interface with peripherals such as printers, scanners,...