The model selection of propeller turbine construction using Analytical Hierarchy Process (AHP)

Abstract

This study aimed to develop an innovative propeller turbine design to facilitate easy manufacturing and maintenance processes, leading to a reduction in costs. Furthermore, the Analytical Hierarchy Process (AHP) method was employed to identify the most optimal model and design for the propeller turbine. Problem-solving within the AHP framework was guided by three fundamental principles, namely decomposition, Comparative Judgment, and Logical Consistency. The procedure included problem decomposition, assessment/ weighting to compare elements, matrix preparation and consistency testing, setting priorities for each hierarchy, priority synthesis, and decision-making. To establish a benchmark, three types of propeller turbines currently available in the market served as references. Meanwhile, the selection criteria for the model were based on several factors, including power factor, time efficiency, ease of manufacture, as well as production and maintenance costs. Considering the criteria, modifications were made to these reference models, resulting in the development of alternatives, denoted as A, B, and C. The results showed that alternative type A as the most suitable choice for further development. Therefore, this particular design was granted foremost priority to develop a low-head generator that possessed ease of manufacturing and surpassed alternative models in terms of feasibility.

Analysis of empirical method for predicting maneuverability of ultra-large container ship using Maneuvering Modelling Group (MMG) model

“…Table 7 and Figure 10 shows the comparison results of the turning motion simulation from modified formulas, Kijima [7], Yoshimura [17], and the experiment captive model test [12]. The modified formulas have similar turning test results compared to the Yoshimura formulas with slight improvement for ship advance, the turning trajectory satisfied the IMO regulations and matched the experiment data performed by the captive model test.…”

“…Reference Coefficients JASNAOE. [12] Open water characteristics (𝑘 0 , 𝑘 1 , & 𝑘 2 ) Harvald. [23] Wake Fraction Ratio (𝑤 𝑃 ) Molland et al [24] Thrust Deduction Factor (𝑡 𝑃 )…”

“…This approach can simulate the condition of a ship when manoeuvring according to its original requirements but requires quite a large number of resources to complete the simulation. Apart from these methods, other prediction methods are widely used by academics and industry, such as identification systems [7,8,9,10,11] and mathematical models [12,13,14,15] to model ship manoeuvre movements.…”

Civil site selection of the gas engine power plant by value-based decision multicriteria in Kupang, Indonesia

“…VBD is utilized in this research as a decision-making procedure according to the flowchart model, as indicated in Figure 1. By using the AHP that has three fundamental concepts of decomposition, comparative decision-making, and logical coherence [19], which method is fast, easy, and considered rational [18]. This research conducts a decision-making procedure using the hierarchy structure indicated in Figure 2.…”

“…AHP is a decision-making method to produce optimal decisions from several alternatives and criteria [18,19,20,21,22]. GIS is known for its ability to handle huge geographical information from a wide range of resources [23].…”