How to Prove GasPods Work to Save Fuel

GasPods_Blue_Hawaii_5688“Plato’s allegory of the cave is as relevant today as it was 2,500 years ago. It is the challenge of the freed prisoner, the Bodhisattva, the enlightened one, who has seen the truth to share it with his brethren. Those who have remained sitting before the shadows, driving the path given to them, are unaware of how they can begin to take control of their own driving profile. How do we prove what they can and should do? How do we prove GasPods Work?

The AeroHance GasPod Project is deep into phase III of its 3-part test protocol showing how GasPods work to save you fuel, which saves you money, and will help you in contributing toward saving the world.

Phase I: Proof of Concept Or, We’ve Got GasPods, Do They Work?

In 2009, we began testing GasPods on automobiles. It started with our own 2004 Volvo. (See Holy Moly GasPods Work….) Once this proof of concept stage of product development was favorably concluded, we decided to run the numbers professionally.

Phase II: Bring in the Processors

We retained the services of a firm that specializes in Computer Fluid Dynamic (CFD) analysis for the transportation industry. Their client list includes NASA, Boeing, Mercedes Benz, Ford, Harley Davidson. Any company that has its worth in movement, knows and uses this international engineering firm.

Our question was simple: Show us what GasPods do? In scientific terms,

“The objective of this project was to investigate GasPods effect when installed on a car for aerodynamic performance in terms of drag reduction.”

A study was modeled in which GasPods were placed in an array along the rear trailing edge of a Volkswagen Golf Body. The VW Golf body was chosen because, with more than 36 million made, it is one of the most popular car bodies of all time.

Using 57 million data points, a baseline, without GasPods geometry of the vehicle, and with GasPods geometry was modeled, and placed in a virtual wind tunnel to test their effects with winds generated for travel at 65 mph. (Later studies run at 35 mph bore similar results.)

The computer, with Linux Cluster 64-bit 3.2 Ghz Xeon Processors, 32 of them in all, was fired up and for 8 days, 4.5 hours, 50,000 iterations were run at .14 sec/iteration. The drag coefficient of the car was compared with the drag coefficient of the same VW Golf body with GasPods.

3 aeronautical engineers reviewed the study and signed off its compliance with industry standards. One of these engineers hand delivered the results. Why? He wanted to show us personally the truly unique character of GasPods, as it was a surprise to them.

He showed us these drawings:

skin_friction_GasPods1

With GasPods there is less drag, represented by red.

The red represents skin friction.

skin_friction_nopods1

Without GasPods there is more drag, represented by red.

Notice how the red, representative of skin friction drag, is wicked away on the vehicle with GasPods.

  • Had the GasPod been any taller, it would pick up drag, which would counteract its aerodynamic benefits.
  • Had the GasPod been any smaller, it would not have grabbed the same volume of air, and results might not be the same.

He said, the industry kills for 2%, but with this particular size, shape and configuration:

Installing GasPods reduces the drag coefficient by about 0.0186, which is equivalent to 5.24% reduction in drag.

  • Although GasPods increase the profile drag, overall reduction in drag by modifying flow structures in the wake layer turns out to be greater than the addition to the profile drag.
  • Presence of GasPods in the growing boundary layer decelerates the downstream flow, which results in a pressure rise of the shear layer. This pressure rise propagates through the shear layer into the base region of the vehicle.
  • Presence of GasPods on the roof causes increase in base pressure of the vehicle in the wake region, which results in reduction in drag.

“This analysis demonstrates that change in the flow field, especially pressure in the vicinity of the shear layer that lies between the free stream and the re-circulation region can decrease drag on the vehicle.”

In other words, GasPods work exceedingly well at reducing the drag coefficient of the tested.

Still want to remain in the cave, driving along the shadowed path? Of course, not. Help us with Phase III in our 3-part proof for GasPods by documenting and sharing your real world fuel savings.

Join as a Test Team Member. Test Team Members are clients, otherwise unknown to us, who provide a minimum 2,000 miles of baseline, mileage before purchasing GasPods. They receive a discount on their purchase. They then receive a rebate for providing a minimum of 2,000 miles with GasPods on their vehicle. Case studies published throughout are representative of the results from those who leave the cave and drive along the sunny path, to prove to themselves how GasPods Work!

 

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