August 4, 2004
Wind Tunnels
For the second day running I've been almost blown away by the wind in Clarence Street, outside the office here in Sydney!
There is a definite wind tunnel effect in Clarence Street. The blocks of tall buildings on both sides of the street create a space for the cold wind to rush at a rate of knots from the south. It reminds me of days gone by in the cricket season when batsmen not occupied in the middle would congregate between the Number 1 and Number 2 ovals at Sydney University. A similar wind tunnel effect was frequently in operation there too.
Today I guess the wind will give me more incentive to stay indoors and work!
Posted to Personal by Keith PittyThis tunnel effect is exploited by sloop-rigged yachts. It is also known as the venturi effect or slot effect. Sailors often refer to the space between the main (rear) sail and the jib (front) sail as "the slot"; in there the wind flows more quickly than elsewhere, generating more force. That
tunnel effect is useful and sought-after on a yacht - not so useful and sought-after when you nip out for a coffee.
