Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed
Unmanned underwater vehicles (UUV) face maneuverability and rapidity challenges when they are applied for detecting and repairing submarine oil and gas pipelines, and fiber cables near the seabed. This research establishes numerical models of the bare UUV and self-propelled UUV near the seabed using...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/6975 |
| _version_ | 1797407629097566208 |
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| author | Xiaodong Liu Yuli Hu Zhaoyong Mao Wenlong Tian |
| author_facet | Xiaodong Liu Yuli Hu Zhaoyong Mao Wenlong Tian |
| author_sort | Xiaodong Liu |
| collection | DOAJ |
| description | Unmanned underwater vehicles (UUV) face maneuverability and rapidity challenges when they are applied for detecting and repairing submarine oil and gas pipelines, and fiber cables near the seabed. This research establishes numerical models of the bare UUV and self-propelled UUV near the seabed using the computational fluid dynamics (CFD) method. The effect of dimensionless distance <i>Hd</i> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula> on the hydrodynamic performance of the vehicle and the interaction between the hull and the propeller is investigated. The range of <i>Hd</i> is 1.5<i>D</i>–10<i>D</i>, and the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula> is 9.97 × 10<sup>5</sup>~7.98 × 10<sup>6</sup>. Findings indicate that: (1) There is an obvious strong coupling between the hydrodynamic performance of the bare UUV and <i>Hd</i>. With the increase of <i>Hd</i>, the hydrodynamic performance such as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>d</mi></msub></mrow></semantics></math></inline-formula>, the absolute value of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>y</mi></msub></mrow></semantics></math></inline-formula> decreases continuously and finally tends to be stable. The absolute values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>d</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula> increase with the increase of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>. The change trend of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>y</mi></msub></mrow></semantics></math></inline-formula> is opposite to that of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula>. (2) The variation trend of hydrodynamic performance of the self-propelled UUV with <i>Hd</i> is consistent with those of the bare UUV. Additionally, it increases to some extent, respectively, compared with the bare UUV. (3) The self-propelled characteristics such as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>t</mi></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>H</mi></msub></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>w</mi></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>i</mi></msub></mrow></semantics></math></inline-formula> are weakly related to <i>Hd</i>. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>t</mi></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>i</mi></msub></mrow></semantics></math></inline-formula> increase with the increasing of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>, while <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>H</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>w</mi></semantics></math></inline-formula> decrease with the increasing of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>. |
| first_indexed | 2024-03-09T03:45:14Z |
| format | Article |
| id | doaj.art-466c3457c31745fca56c3bdfdad62458 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:45:14Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-466c3457c31745fca56c3bdfdad624582023-12-03T14:35:38ZengMDPI AGApplied Sciences2076-34172022-07-011214697510.3390/app12146975Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the SeabedXiaodong Liu0Yuli Hu1Zhaoyong Mao2Wenlong Tian3School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, ChinaUnmanned Systems Research Institute, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, ChinaUnmanned underwater vehicles (UUV) face maneuverability and rapidity challenges when they are applied for detecting and repairing submarine oil and gas pipelines, and fiber cables near the seabed. This research establishes numerical models of the bare UUV and self-propelled UUV near the seabed using the computational fluid dynamics (CFD) method. The effect of dimensionless distance <i>Hd</i> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula> on the hydrodynamic performance of the vehicle and the interaction between the hull and the propeller is investigated. The range of <i>Hd</i> is 1.5<i>D</i>–10<i>D</i>, and the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula> is 9.97 × 10<sup>5</sup>~7.98 × 10<sup>6</sup>. Findings indicate that: (1) There is an obvious strong coupling between the hydrodynamic performance of the bare UUV and <i>Hd</i>. With the increase of <i>Hd</i>, the hydrodynamic performance such as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>d</mi></msub></mrow></semantics></math></inline-formula>, the absolute value of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>y</mi></msub></mrow></semantics></math></inline-formula> decreases continuously and finally tends to be stable. The absolute values of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>d</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula> increase with the increase of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>. The change trend of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>m</mi><mi>y</mi></msub></mrow></semantics></math></inline-formula> is opposite to that of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>C</mi><mi>l</mi></msub></mrow></semantics></math></inline-formula>. (2) The variation trend of hydrodynamic performance of the self-propelled UUV with <i>Hd</i> is consistent with those of the bare UUV. Additionally, it increases to some extent, respectively, compared with the bare UUV. (3) The self-propelled characteristics such as <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>t</mi></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>H</mi></msub></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>w</mi></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>i</mi></msub></mrow></semantics></math></inline-formula> are weakly related to <i>Hd</i>. The <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>t</mi></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>i</mi></msub></mrow></semantics></math></inline-formula> increase with the increasing of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>, while <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mi>η</mi><mi>H</mi></msub></mrow></semantics></math></inline-formula> and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>w</mi></semantics></math></inline-formula> decrease with the increasing of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>R</mi><msub><mi>e</mi><mi>L</mi></msub></mrow></semantics></math></inline-formula>.https://www.mdpi.com/2076-3417/12/14/6975hydrodynamic performanceCFDself-propulsionseabedUUV |
| spellingShingle | Xiaodong Liu Yuli Hu Zhaoyong Mao Wenlong Tian Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed Applied Sciences hydrodynamic performance CFD self-propulsion seabed UUV |
| title | Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed |
| title_full | Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed |
| title_fullStr | Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed |
| title_full_unstemmed | Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed |
| title_short | Numerical Simulation of the Hydrodynamic Performance and Self-Propulsion of a UUV near the Seabed |
| title_sort | numerical simulation of the hydrodynamic performance and self propulsion of a uuv near the seabed |
| topic | hydrodynamic performance CFD self-propulsion seabed UUV |
| url | https://www.mdpi.com/2076-3417/12/14/6975 |
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