Ok , we've been testing a simple convergent nozzle operating at pressure ratios of approxomately 3-4 (To, approx 200C)exhausting into static free air, and we are experiecing some pretty elevated levels of noise. We expected this but the question really is what is the source of the noise? Is it...
Anybody had any experience of predicting seperation due to a shock. We know it is wrong as our prediction does not line up with our experiment, but are struggling to find a method to correctly predict this phenomenon.
we are using fluent , with standard K-e , 2nd order discretization.
