Numerical models concerning inlet systems are run to assess the hydraulic performance of existing or new and estimate flow interchanges between surface overland sewer flows. In most programs, these interactions modelled using orifice equation, with estimated discharge coefficients around 0.6. this paper, values energy loss for several pressurized grated inlets were obtained by experimental nume...

In this paper, we calculate theoretically the relaxation rates of hot, thermal and antinodal quasiparticles by using Fermi’s golden rule. The transition probabilities at low temperatures express in terms of Bogoliubov coefficients, singlet and triplet scattering amplitudes and dimensionless Landau parameters. The values of Landau parameters may be determined by comparison with the experimental ...