Specific Features of Pressure-Fluctuation Fields in the Vicinity of a Forward-Facing Step–Backward-Facing Step Configuration

Abstract—A computational model of inhomogeneous pressure-fluctuation fields in the vicinity of a forward-facing step–backward-facing step configuration taking into account the high degree of their mutual correlation (global correlation) is generalized from experimental data. It is shown that when determining the characteristics of pressure fluctuations that act on an elastic structure, the global correlation is represented by an additional inhomogeneous field. It is demonstrated that a high degree of correlation may lead to a significant change in the main characteristics of the pressure-fluctuation field in the wake behind the configuration. This is taken into consideration in the model by correcting the local properties of this field.