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The paper discusses the length to beam (L/B) ratio effects on ship resistance at three different Froude numbers using unsteady RANSE simulation. First, the JBC ship model was used as an initial hull form for verification and validation of predicted ship resistance results with measured data, and then the influence of the L/B ratio on ship resistance was carried out. Ship hull forms with different...
This paper presents a non-geometric method for solving the inverse kinematics of a ship motion simulation system having Delta structure as shown in Fig. 1, and then investigated the problem of path tracking control generally. As the complexity of the joint structure of this system, obtaining the inverse kinematics is difficult and computationally expensive and traditional methods such as geometric,...
Autopilot system are valuable for many applications, such as: oceanographic, military purposes, maritime transport,… which offer greater self-adaptive capacity and cost-effectiveness compared to traditional systems. Especially, this is a common and an essential problem for Unmmaned Surface Vessel (USV) due to the non-linearity of the system and the changing environmental conditions. This paper focus...
The phenomenon of extraordinary light transmission has shown its potential application in more areas. The phase behavior for surface plasmons has, however, not much explored. Here, we describe an interferometric method for measuring the phase change when the frequency comb laser transmits through a metallic sub-wavelength hole array.
Nowadays, in the context of the demand for energy is growing by the day, the fossil energy sources are being depleted and environmental pollution problems caused by the exploitation and use of this energy resources is causing severe consequences for life on Earth, the development of renewable energy has become a strong trend throughout the world. In types of renewable energy sources, solar and wind...
Construction of efficient process for managing goods and reducing distance movement of goods to save energy are two important tasks in management warehouse. This paper will present a combination of building algorithms to determine storage location in storage and retrieval process as well as planning optimal route in each travel cycle of goods, their combination helps to manage the goods effectively...
This study investigates and compares the performance of two different types of ultrafiltration (UF) membranes in the recovery of water from secondary treated wastewater. Filtration experiments were carried out on a pilot scale cross-flow unit using synthetic wastewater similar to the quality of secondary treated wastewater by varying the operating parameters such as transmembrane pressure (TMP), feed...
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