Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Said Alhaddad"'
Publikováno v:
Results in Engineering, Vol 22, Iss , Pp 102231- (2024)
Coandă-effect-based collection stands out as the foremost technology in polymetallic-nodule mining due to the absence of direct contact between the collector and the ocean floor. Yet, this collection method disturbs the ocean floor, and minimizing s
Externí odkaz:
https://doaj.org/article/09d8054b71a347669b9c8dcbeaf07853
Autor:
Said Alhaddad, Mohamed Elerian
Publikováno v:
Results in Engineering, Vol 21, Iss , Pp 101916- (2024)
Turbidity currents have extensively been explored in quiescent environments. However, during several underwater activities (e.g., dredging and deep sea mining), generated turbidity currents could travel in opposite directions and interact with each o
Externí odkaz:
https://doaj.org/article/76c5a637c24b40e1949a2875abc8d706
Publikováno v:
Results in Engineering, Vol 17, Iss , Pp 100852- (2023)
We present an effective design of a hydraulic, polymetallic nodule collector, which fundamentally depends on the Coandă effect in harvesting nodules. The design was first developed based on 2D numerical simulations conducted using a computational fl
Externí odkaz:
https://doaj.org/article/37af3faf10e4424eb63376527b4a8a1a
Publikováno v:
Mining, Vol 1, Iss 3, Pp 251-278 (2021)
The interest in polymetallic nodule mining has considerably increased in the last few decades. This has been largely driven by population growth and the need to move towards a green future, which requires strategic raw materials. Deep-Sea Mining (DSM
Externí odkaz:
https://doaj.org/article/16a50082847b412f9e1dccc1f067b103
Publikováno v:
Water, Vol 15, Iss 8, p 1541 (2023)
This study utilizes three-dimensional simulations to investigate scour in combined wave–current flows around rectangular piles with various aspect ratios. The simulation model solves the Reynolds-averaged Navier–Stokes (RANS) equations using the
Externí odkaz:
https://doaj.org/article/6380ded3726841e1a8e02b3d3383a1ef
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 3, p 560 (2023)
As a result of the dilation of soil matrix, dense submarine sand slopes can temporarily be steeper than the natural angle of repose. These slopes gradually fail by the detachment of individual grains and intermittent collapses of small coherent sand
Externí odkaz:
https://doaj.org/article/37946f8ecbc94780a2f4a54d4d9bfb81
Autor:
Said Alhaddad, Rudy Helmons
Publikováno v:
Journal of Marine Science and Engineering, Vol 11, Iss 2, p 349 (2023)
To date, hydraulic collection is the most widely considered technology in polymetallic-nodule mining, since there is no direct contact between hydraulic collectors and ocean floor. To construct a hydraulic collector that results in the least sediment
Externí odkaz:
https://doaj.org/article/8b18087cf8674aadb414a1193b2d2a5a
Publikováno v:
Journal of Marine Science and Engineering, Vol 8, Iss 9, p 728 (2020)
Breaching flow slides result in a turbidity current running over and directly interacting with the eroding, submarine slope surface, thereby promoting further sediment erosion. The investigation and understanding of this current are crucial, as it is
Externí odkaz:
https://doaj.org/article/c38afa86e05d410a8681d47ee0111f26
Publikováno v:
Journal of Marine Science and Engineering, Vol 8, Iss 2, p 67 (2020)
This paper starts with surveying the state-of-the-art knowledge of breaching flow slides, with an emphasis on the relevant fluid mechanics. The governing physical processes of breaching flow slides are explained. The paper highlights the important ro
Externí odkaz:
https://doaj.org/article/735ebadec7004e2391da4d1daeeda0b2
Publikováno v:
Jurnal Biologi Tropis. 22:940-946
The study of condition status and identification of problems of seagrass damage in the waters of South Kayoa District, South Halmahera Regency aims to determine the status of seagrass ecosystem conditions and identify problems of seagrass ecosystem d