Experimental study of Acoustic Communication over Deep-sea Vertical Channel

2018 ◽  
Author(s):  
Xiong Shengjun ◽  
Zhou Lisheng ◽  
Zhu Xiaohui ◽  
Wang Chao ◽  
Shang Hongmei
Keyword(s):  
Experimental Study ◽  
Acoustic Communication ◽  
Deep Sea ◽  
Vertical Channel

EXPERIMENTAL STUDY OF CONDENSATION OF HUMID AIR IN LAMINAR FLOW IN A VERTICAL CHANNEL

2017 ◽  
Vol 48 (5) ◽  
pp. 379-390
Author(s):  
V. Murali Krishna ◽  
V. Dharma Rao
Keyword(s):  
Experimental Study ◽  
Laminar Flow ◽  
Vertical Channel ◽  
Humid Air

Experimental Study for Data Validation Regarding the Flow Movement in Natural Convection in an Asymmetrical Heated Vertical Channel

2014 ◽  
Vol 659 ◽  
pp. 313-318 ◽  
Author(s):  
Andrei Burlacu ◽  
Vasilică Ciocan ◽  
Marina Verdeș ◽  
Cătălin George Popovici ◽  
Marius Costel Balan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Natural Convection ◽  
Particle Image ◽  
Single Channel ◽  
Size Variation ◽  
Vertical Channel ◽  
Heat Output ◽  
Piv Method ◽  
Physical Boundary ◽  
Zone Temperature

The present paper presents an experimental study, regarding the dynamics of movement in natural convection in an asymmetrically heated vertical channel. The channel was immersed in a tank filled with water at a temperature of 15 °C. The study focuses on one hand, on the radiated heat output from the heating plate, and on the other hand, on the thermo-physical boundary conditions from the inlet and the outlet of the channel. These aspects give great problems in natural convection if limited to a single channel as a field of study. The experimental study was conducted to validate numerical results, in similar conditions. The size variation of the recirculating zone, temperature and speed in the channel were analyzed through the PIV method (Particle Image Velocymetry) using the equipment provided by Dantec Dynamics and the analysis program "Dynamic Studio".

Experimental study of efficient multi-band underwater acoustic communication algorithm

2018 ◽  
Vol 144 (3) ◽  
pp. 1870-1870
Author(s):  
Hui Su Lee ◽  
Chang Uk Baek ◽  
Jung-Hyun Seo ◽  
Ji Won Jung ◽  
Dae Won Do
Keyword(s):  
Experimental Study ◽  
Acoustic Communication ◽  
Underwater Acoustic Communication ◽  
Underwater Acoustic ◽  
Multi Band

scholarly journals Experimental study on electrical properties of deep-sea cobalt-rich crusts

2017 ◽  
pp. 1-5
Author(s):  
Jianhua Hu ◽  
Shaojun Liu ◽  
Qiong Hu ◽  
Ruiqiang Zhang ◽  
Yu Dai
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Deep Sea

scholarly journals Bioluminescence of the Largest Luminous Vertebrate, the Kitefin Shark, Dalatias licha: First Insights and Comparative Aspects

2021 ◽  
Vol 8 ◽  
Author(s):  
Jérôme Mallefet ◽  
Darren W. Stevens ◽  
Laurent Duchatelet
Keyword(s):  
Experimental Study ◽  
New Zealand ◽  
Deep Sea ◽  
Hormonal Control ◽  
Shark Species ◽  
Control Analysis ◽  
Light Organs ◽  
First Time ◽  
Insight Into

Bioluminescence has often been seen as a spectacular yet uncommon event at sea but considering the vastness of the deep sea and the occurrence of luminous organisms in this zone, it is now more and more obvious that producing light at depth must play an important role structuring the biggest ecosystem on our planet. Three species of deepwater sharks (Dalatias licha, Etmopterus lucifer, and Etmopterus granulosus) were collected from the Chatham Rise, off New Zealand, and for the first time, we documented their luminescence. Comparison of glowing shark pictures, combined with histological description of light organs and hormonal control analysis, highlight the evolutive conservation of the bioluminescence process within Dalatiidae and Etmopteridae. A special emphasis is placed on the luminescence of D. licha, the largest known luminous vertebrate. This first experimental study of three luminous shark species from New Zealand provides an insight into the diversity of shark bioluminescence and highlights the need for more research to help understand these unusual deep-sea inhabitants: the glowing sharks.

scholarly journals Design and Validation of Thermal Insulation for Deep-sea Fluid Sampler of Jiaolong Human Occupied Vehicle

2021 ◽  
Vol 2095 (1) ◽  
pp. 012070
Author(s):  
Kaiben Yu ◽  
Le Zong ◽  
Shengqi Yu ◽  
Qingjian Meng ◽  
Baohua Liu
Keyword(s):  
Experimental Study ◽  
Thermal Insulation ◽  
Deep Sea ◽  
Silica Aerogel ◽  
Simulation Analysis ◽  
Maximum Temperature ◽  
Vehicle Simulation ◽  
Variation Characteristics ◽  
Insulation Effect ◽  
Insulation Performance

Abstract In this paper, a thermal insulation structure with silica aerogel felt as filler material was designed for the requirements of deep-sea fluid thermal insulation sampling technology for Jiaolong human occupied vehicle. Simulation analysis of thermal insulation performance was carried out and an experimental prototype was developed for the thermal insulation structure. Experimental study on thermal insulation performance was conducted with the variation characteristics of the operation environment for Jiaolong human occupied vehicle being taken into account. Results show that the silica aerogel felt with a thickness of 30 mm filled in the radial space between the inner and outer cylinders can achieve the expected thermal insulation effect during the diving-sampling-transferring process, with maximum temperature rise of 8.5 °C, and can meet the requirements of deep-sea fluid thermal insulation sampling technology.

Theoretical analysis and experimental study for rotating seals used in deep-sea

2015 ◽  
Author(s):  
Cui-Hong Zhang ◽  
Xue-Peng Cao ◽  
Bin Yang ◽  
Jin-Ping Li
Keyword(s):  
Experimental Study ◽  
Theoretical Analysis ◽  
Deep Sea
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