Side intake acting as venturi?

[The Radium King]

Originally Posted by Racer Boy

No, JFP just told you that there is a slight positive pressure. It's very unlikely that any manufacturer in modern times would release an air intake design that hurts performance.

um, I think what tgh was saying was that if the car was running and moving, the engine drawing air would create that pressure so not a true test. you could do it on the other side when the fan wasn't running to get a truer test.

if you look at velocity maps of cars you'll see that the air is at a lower velocity in that area relative to other areas of the car. perhaps due to turbulence induced by the front wheel? anyways, if the air moves slower relatively then there will be more of it in that area so higher pressure relative to the rest of the car.

[maytag]

Originally Posted by The Radium King

.....if the air moves slower relatively then there will be more of it in that area so higher pressure relative to the rest of the car.

I had to read that twice..... and then think about it really hard, in order to wrap my mind around that. That's counter- intuitive.... but I think it's right..... right?

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[truegearhead]

Originally Posted by The Radium King

um, I think what tgh was saying was that if the car was running and moving, the engine drawing air would create that pressure so not a true test. you could do it on the other side when the fan wasn't running to get a truer test.

if you look at velocity maps of cars you'll see that the air is at a lower velocity in that area relative to other areas of the car. perhaps due to turbulence induced by the front wheel? anyways, if the air moves slower relatively then there will be more of it in that area so higher pressure relative to the rest of the car.

Exactly, if the engine is running it would be overcoming the vacuum. To properly test you’d have to test the fan side.