Blogs

Virtual Wind Turbine Breaks Betz' Law

Given the technological sophistication of today's wind turbines, it's quite humbling to think that their theoretical maximum efficiency was derived by wind turbine pioneer Albert Betz in 1920. Betz' Law, as it is now known, is a relatively simple proof that the maximum efficiency of a wind turbine, irrespective of its design, cannot exceed 59%. Still, some believe laws are there to be broken - at least in the virtual simulation world.

Future of Commercial CFD

Having covered the Origins of Commercial CFD and the Evolution of Commercial CFD it seems only fitting that I stick my neck out and provide predictions on the future of CFD. Let's start by extrapolating from recent events and use the analogous CAD market as a reference.

Evolution of Commercial CFD

The evolution of the commercial Computational Fluid Dynamics (CFD) industry from the original pioneers makes for an interesting trip through time. Join me as I trace the ancestry of current day CFD vendors.

Origins of the Commercial CFD Industry

Some may remember the 1980s for its over-the-top fashion (think big shoulder pads), even bigger hair styles, action movies (who can forget The Terminator?) and the Gordon Gekko greed is good mantra. Others will remember the introduction of personal computers - a "dent in the universe" to quote Steve Jobs of Apple. A few may even remember that the origins of the commercial Computational Fluid Dynamics (CFD) software industry can be traced to a small number of pioneers in the 1980s. If you are one of the few then maybe you'll find this post on the origins of commercial CFD will stir a few fond memories.

Turbulence to Skydiving: The 2007 Blog Review

2007 was quite a ride. Looking through my posts you'll find a veritable mystery tour from Turbulence to Skydiving Without a Parachute. Various themes emerged without warning - there was no master plan - I just went where the wind blew and the water ran.

Skydiving Without a Parachute

Jump out of an aircraft without a parachute - are you mad? Probably. What if you could have a reserve parachute and wear a wingsuit? OK, keep talking...

MicroISV Rising

The rise of the MicroISV - small (sometimes a single person) independent software vendor - might be the jolt that the Computer-Aided Engineering (CAE) analysis industry needs to break free of the current trend of ever more expensive tools offered by established CAE vendors. Just as the Google Lunar XPrize attempts to jumpstart a new outer space industry, MicroISVs have the potential to forge a brave new software frontier.

Personal Air Vehicle Challenge

Rather than a personal jetpack that is limited to flights (or more accurately hops) of 30-50 seconds duration, how about a Personal Air Vehicle (PAV) with a range of 700 miles? Now you are talking – welcome to NASA's vision for a versatile vehicle to alleviate congestion on roads.

Wind Belt: Wind Power Minus the Spin

Spinning wind turbines in various configurations – horizontal or vertical axis, massive or micro, even flying – dominate the environmentally friendly electricity generation scene. However, what if you wanted an electricity source to power a small light? Spinning wind turbines are too costly. A second option is batteries (recharged by solar panels maybe). But now there is a third – the Wind Belt can convert wind energy into electricity, without spinning components, suitable for low-power appliances such as small lights.

Kites: History, Aerodynamics and Uses

As with paper airplanes, we have Chinese inventiveness to thank for another wildly popular aerodynamic device – the kite. Kites have evolved over millennia to the extent that they can now provide useful motive forces to aid ships to cross oceans. However, their ability to thrill children (and those young at heart) with their grace and aerobatics remains intact.

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