Improvement of the accuracy of nonlinear rotordynamic models by means of the use of non-white fluid-induced signal noise

•Adding White noise to signals for validation of monitoring techniques is unreliable.•Signal noise type influences detection of rotor–casing rub in accelerometer signals.•Turbulent fluctuations models fit the random vibration seen in rotating machinery.•A method to simulate fluid-induced signals in rotating machinery is presented.•Rub is detectable in accelerometer signals with Wavelets under fluid–induced noise.