Fans in Push/Pull without a radiator?

[Slurpee12]

I have a couple of fans laying around doing nothing (same brand and max RPM), and I have room in my case to essentially run them in push/pull without a radiator in between them or anything. If I were to mount these fans stacked together, would this just create turbulence or is it just a stupid idea?
Not trolling. I can actually do this and have the room. Not sure if it would be just a waste of space or if it actually does something.

 

[getochkn]

testing is always the best policy. Run prime 95 for 10 mins, note temp. add fan, repeat. better, worse?

 

[USAFRet]

As mentioned above...only way to know is to test.

 

[mcnumpty23]

seem to remember all it does is create turbulence and noise not increase cooling

something to do with even if the fans are identical the blades wont be in sync with each other

though will be interested to hear if you try it in case i am remembering wrongly

 

[USAFRet]

And if you do test this, please report back here with the results.
Someone else will have this exact same question, and can benefit from your experience.

 

[philo-sofa]

I don't think this would help. The airflow from exits the fans at the same speed, so basically the push is doing a roughly normal amount of work and the pull does no work.

 

[Slurpee12]

Alright here are my results:

Corsair SP120 fans on an H80i GT, ambient room temp of 20 degrees C
15 minutes of Prime 95 i7-6700k 1.38V 4.6GHz OC (lost the silicon lottery 🙁 )
2 fans in push pull: 75 degrees C
3 fans (2 in push 1 in pull): 78 degrees C
3 fans (1 in push 2 in pull): 77 degrees C
4 fans (2 in push 2 in pull): 74 degrees C

All in all, stick with 2 fans.

 

[mcnumpty23]

Alright here are my results:

Corsair SP120 fans on an H80i GT, ambient room temp of 20 degrees C
15 minutes of Prime 95 i7-6700k 1.38V 4.6GHz OC (lost the silicon lottery 🙁 )
2 fans in push pull: 75 degrees C
3 fans (2 in push 1 in pull): 78 degrees C
3 fans (1 in push 2 in pull): 77 degrees C
4 fans (2 in push 2 in pull): 74 degrees C

All in all, stick with 2 fans.

kind of what i thought i remembered

but thanks for posting your results it helped refresh my memory for next time some one asks