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 03:36
Introduction Underwater Vehicle (UV) (execute predefined underwater mission) Manned Unmanned Submarine Submersible Autonomous http://www.defense.gov/ https://en.wikipedia.org/ Remotely Operated Underwater vehicle Vehicle (ROV) (AUV)¹ 1 https://en.wikipedia.org/ Features: Equipped with several on-board sensors and payloads Operate over larger depths and longer distances 1. Issac, M.T., Adams, S., He, M., Bose, N., Williams, C.D., coveted technology in the fields of scientific, industrial and military Bachmayer, R. and Crees, T., 2007, April. Manoeuvring experiments using the MUN Explorer AUV. In 2007 applications. Symposium on Underwater Technology and Workshop on Scientific use of Submarine Cables and Related High endurance and good manoeuvrability are the vital qualities required Technologies (pp. 256-262). IEEE. for UV. Department of Ship Technology Cochin University of Science and Technology - CUSAT
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References
  • 1.
    http://www.defense.gov/
  • 2.
    https://en.wikipedia.org/
  • 3.
    M. T. Issac et al. (2007) Manoeuvring Experiments Using the MUN Explorer AUV.
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Summary (AI generated)

Now, this is the introductory session, so let's begin by discussing underwater vehicles. These are marine vehicles that operate beneath the surface of the sea with the main aim of executing predefined underwater missions. There are two categories of underwater vehicles: manned and unmanned. In manned vehicles, a human being is physically present inside and controls the vehicle. Examples of manned vehicles include submarines and submersibles. Submarines are designed for traveling over longer distances and larger depths, while submersibles have limitations in their operational ranges.

Moving on to unmanned underwater vehicles, they are controlled by human beings, but there is no need for a human to be physically present inside the vehicle. Examples of unmanned vehicles include Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs). The difference between AUVs and ROVs is that communication between the vehicle and controller in AUVs occurs through wireless communication, while in ROVs, wired communication always exists between the operator and the vehicle. One drawback of ROVs is that they cannot travel over longer distances due to the entanglement of their wires. On the other hand, AUVs are designed to travel over longer distances and larger depths, just like submarines.

The speciality of these kinds of underwater vehicles is that they carry several onboard sensory payloads and are designed to be operated over larger depths and longer distances. This is why they are becoming a coveted technology in the fields of scientific, industrial, and military applications. In scientific applications, they are mainly used for bathymetric survey, sea mapping, biodiversity analysis, and order. In the industrial case, they are used for oil spill leakage studies and detection of oil spills. For military applications, they are used for underwater surveillance and sonar.

Some essential qualities required for these kinds of underwater vehicles include high endurance, which is the ability to travel over longer distances in a good manner.