Enhancing the traction performance of tracked miner is crucial for ensuring smooth seabed operation. In this study, an experimental device interaction between track and deep-sea sediments was designed, aligning with walking process miner. The primary secondary order influence driving parameters on mechanical properties undisturbed determined by orthogonal test, pressure-sinkage model shear stress–displacement were constructed. Building upon vehicle ground mechanics theory, in environment...

The present study develops a refined water hammer model by postulating the presence of jet within reservoir as wave is reflected at pipe inlet. waterjet leads to new boundary expression that induces smoothing effect on pressure front introducing factor, which determined minimizing difference between histories predicted numerically and those measured experimentally. proposed applied in conjunction with quasi-steady, Brunone, Zielke friction models shown more accurately replicate peak...

The driving performance of subsea mining vehicles is greatly affected by the pressure–sinkage characteristics deep-sea sediment. Therefore, it great importance to analyze microscopic properties sediment and establish corresponding model for safe operation vehicles. Hence, present paper focuses on physical provide a preliminary understanding its process evolution according solid–liquid two-phase flow particle mechanism. In addition, stress loading time rheological theory are applied in order...

In order to better describe the pressure‐sinkage process of deep‐sea surface sediments, this article proposes a new four‐element model. First, was divided into four components according change in sediment sinkage rate, and time‐dependent mechanical property sediments described. Then, model established by introducing variable‐order fractional derivatives modelling idea classic element combination full regions sediments. Furthermore, comparing with experimental results from other literature,...

Metals in deep-sea polymetallic nodules are indispensable for battery production and play a crucial role facilitating the socio-economic green transition. A three-dimensional laser scanning model of northwest Pacific Ocean has yielded an amount data on volume, shape, particle size. To deeply mine correlation between characteristics nodules, joint probability density function (JPDF) based copula theory is used. univariate (PDF) linked to size, burred depth, shape factor, mass ores...

Abstract Estimating the concentration field of effluent mixing and transport is a challenging task because complex mechanisms three‐dimensional (3D) variability, but it great importance for water quality assessment resources management. Sophisticated numerical models based on 3D computational fluid dynamics (CFD) technique can provide accurate predictions, they are computationally expensive require high‐level CFD expertise, impeding their widespread usage. This work primarily develops...

Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation H. Z. Cao, F. Wang, J. L. Feng, P. Tan; Optimal Control of the Valve Based on Traveling Wave Method in Water Hammer Process. AIP Conf. Proc. 28 September 2011; 1376 (1): 436–440. https://doi.org/10.1063/1.3651940 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote...

Growing economy causes the shortage of mineral resource in near future. The locates at sea bottom floor is an alternative solution. hydraulic lifting technique priority option for deep-sea mining. However, heave motion caused by ocean wave leads to longitudinal vibration pipe, which also influenced fluid structural interaction effect between internal and pipe wall. During vibration, closed end due blockage or malfunction buffer will either pull push that activates pressure oscillation....

The traction force of the tracked miner is primarily determined by shear characteristics deep-sea sediments. influence different parameters on sediments and particles change law band are discussed. Drawing from process statistical damage theory, a novel rheological model considering grounding pressure proposed, rules porosity obtained. results show that peak strength residual increase significantly with pressure, track length, grouser height rate, within moving top left to bottom right...

The force chain structure formed in granular flow has a great effect on shear stress of the granular. In this paper, we studied fluctuation and formation structures with slow using concentric cylinder method. experimental results show that frequency amplitude change obviously at different shearing velocity size, distribution an inverse “S” shape. At same time, carbon paper depression approach was used to record quantity points, which act wall due high pressure caused by structure. also...