Investigating Sensor Location Effect on the Accuracy of Cross Correlation Flow Estimation with Coolant Injection using CFD Simulations

摘要

In this work, the relationship between the sensor location and the CCF flow estimation with water injection has been investigated by CFD simulations. We determined it is important to choose the optimal sensor location for different main flow rate. For the smaller flow rate, the sensor location should be close to the injection pipe and the separated distance should not be very large. On the other hand, the distance between the two sensors should be large enough to detect the small time interval when the main flow grows larger. One issue for this work is the size of the region for the candidates of the sensor location, which is a bit narrow compared with the pipe size. It is shown that for the relatively larger main flow cases, the optimal sensor location is across the entire candidate region. In the future, this region will be expanded to find out the optimal sensor location which will produce more accurate CCF flow estimation compared with those produced by this work.