Hence, to have a better understanding of the motion responses of prototype submerged floating tunnel under waves, we employ the numerical model validated in previous sections to study the influence of IMA on the prototype SFT in Qiongzhou Strait. ... However, the mooring chains of SFT designed in Zone 1 has a potential to be damaged running the ...
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The submerged scrapper conveyor in the petrochemical industry was found to have failed when periodic inspections were carried out. Chain–submerged scrapper conveyor has failed several times and was repaired with material changes. The last material chain change with AISI 420 lasted only approximately three months.
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In connection with the design of floating wind turbines, stochastic dynamic analysis is a critical task considering nonlinear wind and wave forces. To study the random structural responses of a newly designed submerged tension leg platform (STLP) wind turbine, a set of dynamic simulations and comparison analysis with the MIT/NREL TLP …
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This paper shows a complete study of the dynamics of a mooring line: first, a simulation code based on a lumped mass formulation was developed and tested under different setups and second, an equivalent experimental campaign was performed to compare against the numerical predictions.The tests consisted of a suspended chain …
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When the elastic deformations of mooring chains are taken into consideration, these five unknown parameters be obtained by the joint solution of Eqs. (4), (5), (6), (9). Afterwards, three motions of the submerged moored body driven by regular waves can be obtained. With the motion responses, the moored body moves to a new …
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real-time polymerase chain reaction. In addition, the transcript levels of development-related ... known regarding the roles of auxin in coleoptile growth responses in submerged conditions. This study compared the transcriptomic profiles of submerged rice coleoptiles and those that were treated with 2,3,5-triiodobenzoic acid (TIBA), which acts ...
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The responses of Ceratophyllum demersum to gradient concentrations (0, 0.8, 3.2, and 10 µg/L) of microcystin-LR (MC-LR) were comprehensively investigated by laboratory simulation experiments. The high reduction and accumulation efficiency of MC-LR by C. demersum were verified in this study. Results showed that the reduction ratio of MC …
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To investigate the effects of zinc (Zn) on aquatic macrophyte, the submerged plant Hydrilla verticillata (L.f.) Royle was cultured in control solution or together with 0.05–30 mg L −1 Zn 2+ for 7 d. The alterations in nutrient uptake and antioxidative response were assayed. Zn stress increased the uptake of Cu, Fe, Mn, Mg, and Zn while decreased that …
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The Allen-Sherman-Hoff submerged chain conveyor system easily and efficiently handles bottom ash, mill rejects and economizer ash for immediate transport or disposal. This simple design eliminates or reduces the quantity of many typical bottom ash system components such as pumps, control valves, refractory, pipe and fittings.
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The ubiquitous existence of perfluoroalkyl acids (PFAAs) in aquatic environments might pose toxic potential to ecosystems. To assess the ecotoxicological responses and removal of submerged ...
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Microplastics pose a serious threat to ecological processes and environmental health. To evaluate the toxic effects of the exposure of microplastics on submerged plants and biofilms, eel grass (Vallisneria natans) was exposed to different concentrations of microplastics (10–50 mg L −1).The changes in microbial community on …
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In this study, we established the relationship between yearly water level rhythm and growth in submerged macrophytes. The responses of the three submerged macrophytes to water level fluctuations were divided into three periods, i.e., April-June recovery growth period, July-September stress tolerance period, and October-March …
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A submerged floating tunnel (SFT), also known as an Archimedes bridge, is a new type of structure to transport traffic across bodies of water. Compared to bridges and immersed tunnels, the SFT has better environmental adaptability, lower construction cost, greater spanning capacity, all-weather operation and no blocking at the water surface ...
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Mooring line modelling plays an important role in predicting the dynamic response of the floating offshore wind turbines (FOWTs), especially under extreme load …
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Floating wind turbines often experience larger-amplitude motions caused by wind and ocean wave loads, while mooring-lines, such as catenary and taut mooring-lines, make the structure configurations …
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Stuckenia pectinata, a submerged macrophyte of eutrophic to hyper-eutrophic fresh to brackish waters, faces management and climatic-forced increment of salinity and irradiance in Vistonis Lake (Greece) that may endanger its existence and the ecosystem functioning. A pre-acclimated clone under low irradiance and salinity …
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Physiological responses and phytoremediation capacity of floating and submerged aquatic macrophytes exposed to ciprofloxacin July 2022 Environmental Science and Pollution Research 30(1):1-18
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DOI: 10.1016/J.OCEANENG.2016.10.051 Corpus ID: 114473222; Experimental validation of a dynamic mooring lines code with tension and motion measurements of a submerged chain @article{Azcona2017ExperimentalVO, title={Experimental validation of a dynamic mooring lines code with tension and motion measurements of a …
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The ubiquitous existence of perfluoroalkyl acids (PFAAs) in aquatic environments might pose toxic potential to ecosystems. To assess the ecotoxicological responses and removal of submerged macrophyte to multiple PFAA pollutants in aquatic environments, a typical submerged macrophyte, Hydrilla verticillate, was exposed to …
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Submerged macrophyte recovery has been found to be sustainably effective for lake restoration (Hilt et al., 2018). Submerged macrophytes, as major primary producers, play a key role in aquatic ecosystems by stabilizing clear-water conditions and affecting P cycling in lakes (Graneli and Solander 1988; Scheffer and Jeppesen 1998).
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Based on Navier–Stokes equations, a numerical model for studying the dynamic responses and mooring forces of the moored Submerged Floating Tunnel (SFT) driven by surface waves is presented in ...
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The Allen-Sherman-Hoff® remote submerged chain conveyor system, available from Babcock & Wilcox (B&W), meets these requirements. Our system design utilizes two proven technologies: the Allen-Sherman-Hoff Hydrobin® clarification and dewatering technology, and proven submerged scraper technology, to provide the best of both
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The influence of different mooring line models on the stochastic dynamic responses of floating wind turbines. Christian Høeg 1 and Zili Zhang 1. ... L and Nygaard TA 2017 Experimental validation of a dynamic mooring lines code with tension and motion measurements of a submerged chain Ocean Eng. 129 415-427.
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By adjusting plant responses to eutrophication, stoichiometric and physiological mechanisms linking plant traits with ecosystem structure have important implications for understanding ecosystem processes, and these results may contribute to practical management to achieve the restoration of submerged macrophytes and …
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Chain mooring lines were considered, and the properties of the mooring chain materials are summarized in Table 2. Large-diameter mooring lines were considered to accommodate large dynamic motions and the resultant mooring tension. ... Jin, C.; Kim, M. Dynamic and structural responses of a submerged floating tunnel under extreme …
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The submerged design minimizes environmental impact while maximizing efficiency, making them ideal for heavy-duty applications. They feature: Top-quality components – We utilize premium materials in the construction of our submerged chain conveyors, including corrosion-resistant alloys, ensuring longevity even in harsh environments.
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Ciprofloxacin (Cipro) water contamination is a global concern, having reached disturbing concentrations and threatening the aquatic ecosystems. We investigated the physiological responses and Cipro-phytoremediation capacity of one floating (Salvinia molesta D.S. Mitchell) and one submerged (Egeria densa Planch.) species of aquatic macrophytes.
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The submerged macrophytes were pre-cultivated in non-contaminated sediments with 5% Hoagland's nutrient solution for ten days before transplanting. 2.2. ... Responses of bacterial and microeukaryotic communities to BDE-209 in sediment planted with different submerged macrophytes.
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An experimental growth system was devised to study the ecophysiological responses of submerged macrophytes to temperature and light. Using the system, a pilot study was conducted to compare responses to light of three representative species common to the littoral zone of Lake Biwa: Vallisneria asiatica Miki var. biwaensis Miki, …
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The Submerged Floating Tunnel (SFT) is a highly promising cross-sea transportation structure. Due to its body being suspended in water, waves and flows are …
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