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Stepped Inlet Design

Noctua’s Stepped Inlet Design is an advanced aerodynamic design measure first introduced with the NF-F12 fan. By adding turbulence to the fan’s influx, the Stepped Inlet Design facilitates the transition from laminar to turbulent flow. This measure has an effect similar to the dimple structure of a golf ball in so far as it leads to better flow attachment to the frame, which allows the impeller to suck in more air and hence improves overall airflow efficiency.


Stepped Inlet Design


In addition to these aerodynamic benefits, the Stepped Inlet Design also reduces tonal intake noises caused by laminar inflow due to it being transformed to turbulent flow, which produces a more broadband noise profile. This way, the Stepped Inlet Design helps to refine the fan’s acoustic qualities by letting it blend into the background noise more easily and making it more agreeable to the human ear.


Noctua
20.08.2014 - hwmind.it NF-F12 industrialPPC-2000 PWM
Test verdict: "I prodotti Noctua da sempre sono sinonimo di eleganza, resistenza e qualità, ed attraverso questo esame non possiamo far altro che riconfermare." (La Scuola Salvatore, hwmind.it)
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19.08.2014 - [blank],s Universe NF-F12 industrialPPC-2000 PWM
Test verdict: "Noctua Industrial PPC fans are a must buy for people who have to constantly replace their fans due to dust or debris entering and damaging the fans. They are also suited for users who want the performance and silence of a Noctua fan, but want it in black." (Martin Tam, [blank]'s Universe)
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19.08.2014 - SweClockers.com NH-D15
Test verdict: "Sammantaget är Noctua NH-D15 den bästa luftkylaren som hittills passerat genom SweClockers testlabb. Entusiaster som klarar av prislappen på närmare 800 kronor och inte har något emot de karakteristiskt färgsatta fläktarna kan se fram emot en produkt i absoluta toppklassen." (Emil Åkered, SweClockers.com)
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18.08.2014 - ElektronikTest.dk NF-P14s redux-1200 PWM
Test verdict: "Det nye farve tema Jeg er vild med de nye farver og det passer perfekt ind i de tema'er jeg normalt arbejder med når jeg bygger computere så det er jo virkelig noget der passer mig godt her." (John Thorn, ElektronikTest.dk)
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