30 Citations (Scopus)

Abstract

The flow over the San Antonio class LPD 17 ship is simulated using Computational Fluid Dynamics (CFD) and parallel computers. Both steady-state and time-accurate results are presented for two yaw cases. The computations are done for inviscid flow with no turbulence modeling. Although the flow is highly turbulent and boundary layer effects may not be insignificant, the essential features, such as vortex shedding, are captured in these simulations because the body has sharp edges. Time accurate simulations are performed for up to 200,000 time steps. The steady state solution is obtained by time averaging the time accurate data, or by running the code in pseudo-time. The steady-state solution and the frequency spectrum are compared with the wind tunnel experiments and are found to be in good agreement. The dominant Strouhal number is found to be of the order unity.

Original languageEnglish (US)
StatePublished - Dec 1 2001
Event15th AIAA Computational Fluid Dynamics Conference 2001 - Anaheim, CA, United States
Duration: Jun 11 2001Jun 14 2001

Other

Other15th AIAA Computational Fluid Dynamics Conference 2001
CountryUnited States
CityAnaheim, CA
Period6/11/016/14/01

Fingerprint

Strouhal number
Vortex shedding
Wind tunnels
Computational fluid dynamics
Ships
Boundary layers
Turbulence
Experiments

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Sharma, A., & Long, L. N. (2001). Airwake simulations on an LPD 17 ship. Paper presented at 15th AIAA Computational Fluid Dynamics Conference 2001, Anaheim, CA, United States.
Sharma, Anupam ; Long, Lyle N. / Airwake simulations on an LPD 17 ship. Paper presented at 15th AIAA Computational Fluid Dynamics Conference 2001, Anaheim, CA, United States.
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Sharma, A & Long, LN 2001, 'Airwake simulations on an LPD 17 ship' Paper presented at 15th AIAA Computational Fluid Dynamics Conference 2001, Anaheim, CA, United States, 6/11/01 - 6/14/01, .

Airwake simulations on an LPD 17 ship. / Sharma, Anupam; Long, Lyle N.

2001. Paper presented at 15th AIAA Computational Fluid Dynamics Conference 2001, Anaheim, CA, United States.

Research output: Contribution to conferencePaper

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AU - Long, Lyle N.

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Sharma A, Long LN. Airwake simulations on an LPD 17 ship. 2001. Paper presented at 15th AIAA Computational Fluid Dynamics Conference 2001, Anaheim, CA, United States.