Reynolds as in lower density and Froude as in higher density fluids....
The aim of a double fan arrangement is to overcome the deficit of inadequate air pressure due to inadequacies of a single fan as a result of the construction of the cooling fins [which necessitates a pre-requisite “base” pressure which the fan cannot supply]. This arrangement is inefficient unless the 2 fans are “matched” in real-world performance meaning that the “pusher” [to overcome turbulence] has to work harder than the “sucker” [to overcome laminar effects] unlike the psychedelic drug scene where the pusher has it easy. Overall, it means more noise and energy to do the same job. This means that the limit of the the particular design and therefore cooling has been reached. It’s a botched job. In powerplant designs like coupled engines, this was done because of space and current design/technology limitations.
In the “lower” PC arena, it’s the mental capability that’s always in question. Such push-pullers means it’s time to reflect on the radiator design/capability, not more fans. Why? Because you can never get the fans [and the whole kaboodle] to match and the law of diminishing return applies … very rapidly. The extra fan possibiliy accounts for 20% better fliud flow [but not necessarily better cooling] but what if the problem is in the design of the radiator which, naturally, follows from the efficiency of design of the pump, water-block/s, etc. Not a tough choice as it seems. Get better and well matched components from the beginning. The mulitiplicity of choices, the so-called “free market” economy, is meant for us to reflect on the nature of our “State of Balance”, not greed/fear. It starts with taking things at face value, our fear factor. By not challenging, we will always be the "yes" person.
The aim of a double fan arrangement is to overcome the deficit of inadequate air pressure due to inadequacies of a single fan as a result of the construction of the cooling fins [which necessitates a pre-requisite “base” pressure which the fan cannot supply]. This arrangement is inefficient unless the 2 fans are “matched” in real-world performance meaning that the “pusher” [to overcome turbulence] has to work harder than the “sucker” [to overcome laminar effects] unlike the psychedelic drug scene where the pusher has it easy. Overall, it means more noise and energy to do the same job. This means that the limit of the the particular design and therefore cooling has been reached. It’s a botched job. In powerplant designs like coupled engines, this was done because of space and current design/technology limitations.
In the “lower” PC arena, it’s the mental capability that’s always in question. Such push-pullers means it’s time to reflect on the radiator design/capability, not more fans. Why? Because you can never get the fans [and the whole kaboodle] to match and the law of diminishing return applies … very rapidly. The extra fan possibiliy accounts for 20% better fliud flow [but not necessarily better cooling] but what if the problem is in the design of the radiator which, naturally, follows from the efficiency of design of the pump, water-block/s, etc. Not a tough choice as it seems. Get better and well matched components from the beginning. The mulitiplicity of choices, the so-called “free market” economy, is meant for us to reflect on the nature of our “State of Balance”, not greed/fear. It starts with taking things at face value, our fear factor. By not challenging, we will always be the "yes" person.
