Modeling Approach for Reducing Helmholtz Resonance in Submarine Structures

摘要

This paper discusses CFD technology capable of predicting the occurrence of Helmholtz resonance in surface openings of underwater vehicles. An examination of the numerical issues involved in the prediction is discussed - numerical dissipation, turbulence modeling and their interplay are analyzed through detailed parametric simulations. Further, control of such resonance through the use of passive devices is analyzed. Interesting parallels are observed between resonant flow field behavior in a compressible fluid and the behavior in an incompressible setting with no resonance. This suggests the interesting possibility of controlling resonant flow fields through analysis of corresponding incompressible flow fields.