Computational investigation of hydro-acoustic performance of DARPA suboff

S. Sezen, C. Delen, A. Dogrul, S. Bal

Research output: Contribution to conferenceProceeding

Abstract

Submarine hydro-acoustic has been an important research field for decades. Estimation of underwater radiated noise of submarines has a great importance both in preliminary and detailed design stages. In this study, the hydro-acoustic performance of DARPA Suboff (AFF-8) appended form has been investigated by CFD (Computational Fluid Dynamics) approach based on Finite Volume Method (FVM). Verification study has been done with Grid Convergence Index (GCI) method to determine the optimum grid number and validation study has also been done with the experimental results in terms of resistance. Later, hydro-acoustic analysis has been carried out for appended form using the optimum grid number. The prediction of flow noise of an appended submarine form has been done using unsteady RANS (Reynolds Averaged Navier Stokes) with Ffowcs Williams Hawkings (FW-H) equations at one velocity. Several receivers have been located around the submarine form in order to calculate the radiated noise induced by turbulent flow. The hydro-acoustic results of flow noise has been compared with those of another numerical study in the literature.
Original languageEnglish
Publication statusPublished - 25 Apr 2018
Event3rd International Symposium on Naval Architecture and Maritime - Yildiz Technical University, Istanbul, Turkey
Duration: 23 Apr 201825 Apr 2018
http://www.int-nam.yildiz.edu.tr/2018/

Conference

Conference3rd International Symposium on Naval Architecture and Maritime
Abbreviated titleINT-NAM 2018
CountryTurkey
CityIstanbul
Period23/04/1825/04/18
Internet address

Keywords

  • hydro-acoustic performance
  • submarine hydro-acoustic
  • computational fluid dynamics

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    Sezen, S., Delen, C., Dogrul, A., & Bal, S. (2018). Computational investigation of hydro-acoustic performance of DARPA suboff. 3rd International Symposium on Naval Architecture and Maritime, Istanbul, Turkey.