A COMPUTATIONAL ASSESSMENT OF FREE SURFACE AND MOUNT EFFECTS IN TOWING TANK EXPERIMENTS ON FLOW OVER A 6:1 PROLATE SPHEROID

Samuel M. Johnson, Tom Chyczewski, Sven Schmitz, Xiang Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Pre-test simulations were performed of the high Reynolds number 6:1 prolate spheroid towing tank experiments to be carried out by the Office of Naval Research. The two Reynolds numbers of interest in the experiments were investigated, Re = 11.74e6 and Re = 1.47e6, with the prolate spheroid inclined 0, 10, 20, and 45 with respect to the incoming flow. Reynolds-Averaged Navier-Stokes simulations were conducted for three flow configurations. The first included a 6:1 prolate spheroid mounted to a sting and strut under a free surface. The second configuration removed the mounting geometry, and the last configuration omitted the mounting geometry and the free surface. Increments in the forces and moments acting on the prolate spheroid were calculated to quantify the impact of the free surface and mounting geometry on the force measurements in the towing tank experiments. The addition of the free surface resulted in relatively small increments except for the side force at 45 incidence. Increments in the forces and moments due to the addition of the strut were generally larger, particularly at high incidence angles, and reached up to 5% of the total values.

Original languageEnglish (US)
Title of host publicationComputational Fluid Dynamics (CFDTC); Micro and Nano Fluid Dynamics (MNFDTC); Flow Visualization
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791888131
DOIs
StatePublished - 2024
EventASME 2024 Fluids Engineering Division Summer Meeting, FEDSM 2024 collocated with the ASME 2024 Heat Transfer Summer Conference and the ASME 2024 18th International Conference on Energy Sustainability - Anaheim, United States
Duration: Jul 15 2024Jul 17 2024

Publication series

NameAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FEDSM
Volume2
ISSN (Print)0888-8116

Conference

ConferenceASME 2024 Fluids Engineering Division Summer Meeting, FEDSM 2024 collocated with the ASME 2024 Heat Transfer Summer Conference and the ASME 2024 18th International Conference on Energy Sustainability
Country/TerritoryUnited States
CityAnaheim
Period7/15/247/17/24

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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