2D axisymmetric and 3D CFD simulations of flow over the benchmark DARPA SUBOFF submarine model - presented by Mr. H. Rahul Krishna and Dr. Manoj T. Issac and Prof. Dr. D. D. Ebenezer

2D axisymmetric and 3D CFD simulations of flow over the benchmark DARPA SUBOFF submarine model

H. Rahul Krishna, Manoj T. Issac and Dr. D. D. Ebenezer

Prof. Dr. D. D. EbenezerMr. H. Rahul KrishnaDr. Manoj T. Issac
Slide at 06:12
Introduction Majority of the UVs in operation today are streamlined in shape to reduce drag and t maximize endurance The Hulls of modern UVs are axisymmetric and torpedo shaped SO that they can be launched from the torpedo tubes of submarines Forward Control Planes Nose Section Submarine model with control planes Parallel mid body section and propeller Stern Control Planes (X configuration) Tail section Bare Hull Control Planes Twin Bladed Submarine model Propeller A typical survey class streamlined and propeller decomposed into components axisymmetric AUV1 1. Issac, M.T., Adams, S., He, M., Bose, N., Williams, C.D., Bachmayer, R. and Crees, T., 2007, April. Manoeuvring experiments using the MUN Explorer AUV. In 2007 Symposium on Underwater Technology Pictorial representation of DARPA SUBOFF submarine and Workshop on Scientific use of Submarine Cables and Related Technologies (pp. 256-262). IEEE. model Department of Ship Technology Cochin University of Science and Technology - CUSAT
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References
  • 1.
    M. T. Issac et al. (2007) Manoeuvring Experiments Using the MUN Explorer AUV.
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Summary (AI generated)

Today, the majority of underwater vehicles in operation have a streamlined shape. This is because a streamlined shape reduces drag and allows for maximum entrance. The modern underwater vehicle is typically axisymmetric and interpreter shaped. For example, the AUV (autonomous underwater vehicle) pictured below is both axis symmetric and total shaped.

One advantage of having an interpreter shape is that if the controlled fins, used for deflecting or controlling moments of the AUV, are within the maximum diameter of the AUV, they can be launched from interpreter tubes on submarines very silently. This is why most AUVs in operation today have a top row shape.

The figure on the left is a typical survey class AUV with a streamlined and axisymmetric body section and a tail section. It also has a seven control plane in the form of an X configuration and a twin-bladed propeller.

On the right, you can see the DARPA sub submarine model. The hull part and control plane part are visible here as well. However, the control plane is in a plus configuration, also known as a cruciform configuration, and the propeller is also present.