Experimental pressure drop coefficients in transverse flow through LMFBR housings of core elements

Pressure drop measurements were performed, in transverse flow, on a mock-up simulating a partial array of an axial-symmetric bundle of housings of LMFBR core elements. The test section consisted of a rectangular shaped duct containing a bundle of prismatic models in a triangular array. The experimentally measured parameters were: total flow rate, water temperature, pressures among different rows of models. The aim was to report these results in terms of friction factors, for every geometrical ratio investigated, in the range of Reynolds numbers from 1000 to 300000. Comparisons with experimental data, valid for tube-bundle heat exchangers were furthermore made