Design Method for Supersonic Bump Using Three-Dimensional Zoned Pressure Control Concept

To design a supersonic bump with a specified three-dimensional pressure distribution, the stream-surface iteration-based flowfield calculation (SIFC) method was enhanced by incorporating a shock-surface-fitting approach. The resulting method is termed the “modified SIFC (MSIFC) method.” Numerical validations show that the MSIFC method has an error of less than 3.6%. Using this validated tool, three bumps with typical pressure distributions were designed and analyzed, revealing that different bump regions exert distinct influences on bump performance. Based on these mechanisms, a novel design method for supersonic bumps using the three-dimensional zoned pressure control concept has been proposed. It applies targeted pressure to different bump regions and, in turn, solves for the bump geometry using the MSIFC method. The newly designed supersonic bump exhibits improved performance in both low-energy-flow removal and total-pressure recovery. Under design conditions, it can reduce the low-energy-flow thickness on the symmetry plane to 13% of the original value while achieving a total-pressure recovery of 0.936, demonstrating excellent comprehensive performance.