This task is concerned with the recovery of pressure in a fluid as it flows through various conical diffusers of the same inlet (d) and outlet (D) diameters, but with different included angles (2θ). In particular, it involves comparison of the measured and computational fluid dynamics (CFD) predicted pressure recovery coefficients (PRC) and, for modelling purposes only, illustrating the effect of the choice of boundary conditions, pressure recovery patterns along the diffusers and the use of PreBFC. The fluid is air (density ρ and dynamic viscosity μ); the test rigs available are existing open-circuit wind tunnels.
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