Experimental study of static and dynamic fluid flow loads in tube banks

In this paper, results of the wall pressure field as well as velocity and wall pressure fluctuations in tube banks with triangular and square arrays are presented. Based on the measurements of the total pressure on tube walls, the pressure distribution inside the tube bank was estimated. The results, presented as contours in dimensionless form, show that large pressure variations occur mainly in the narrow gaps between the tubes. Pressure and velocity fluctuations are presented in form of their auto spectral density functions and their relationship as cross correlation functions. (author). 7 refs., 6 figs