Spatial Effects in Transfer-Function Measurements of Large Nuclear Reactor Power Systems

The importance of spatial effects in proposed transfer-function measurements in large, fast reactors was investigated. A general theoretical formulation of space-dependent transfer-functions is derived which includes the effects of input and output device spatial characteristics. A quantitative indication of spatial effects is given by numerical simulation of measured transfer-functions in a Liquid Metal Fast Breeder Reactor (LMFBR). An approximate method of solution using the Galerlkin´s procedure was developed in conjunction with the investigation.