In real-life cooling packages there will be an non-uniform air flow distribution on heat exchangers, which can have a big effect on heat transfer rate. Using CFD results with KULI it is possible to consider this uneven air flow on heat exchangers.
Typically, from a given air velocity field over heat exchanger surface at a given operating condition, KULI calculates a system of local resistance correction factors which enables to extrapolate to other operating conditions. This system of correction factors is called “Resistance Matrix”. Nevertheless, often the resistance matrix significantly depends on driving speed, or on the state of a fan or something else. For this reason KULI offers the possibility to use resistance matrices that depend on the driving speed and/or another, user-specified parameter.Usable from release: KULI 8.0-1.04