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Journal of Mechanical Engineering Science and Technology (JMEST)

Abstract

Water-powered funicular railways are an environmentally friendly mode of transport whose efficiency heavily depends on the principle of gravity. However, their operation is vulnerable to natural wind disturbances that can hinder speed or cause a risk of overturning on steep, curved tracks. This study aims to analyse the influence of funicular car model design on the rolling moment exerted on the rails as the car turns to enter a track branch. The research methodology involves aerodynamic simulations using SolidWorks flow simulation, comparing three body models: WAHYUDI, FUNAERO, and AEROFUN. Simulations were conducted with variations in turn angles (10° to 30°) and wind speeds (10 km/h to 30 km/h) from both headwind and crosswind directions. Data optimisation was performed using the DoE factorial response optimiser to determine the most stable configuration. The results show that the shape of the car’s nose and tail influences surface pressure distribution and aerodynamic forces. The FUNAERO model, featuring a chamfered corner shape, was proven to have more even pressure distribution compared to the other models. Overall, the combination of the FUNAERO model, a small turn angle (10°), and low wind speed provides the highest resistance to overturning risks and better energy efficiency by minimising the need for ballast water. In conclusion, selecting an aerodynamic body design and determining optimal track angles are crucial for enhancing the safety and energy efficiency of funicular railways. These findings offer a significant contribution to the development of control systems and the design of mountain transportation infrastructure in the future.

Publisher

State University of Malang (UM)

First Page

238

Last Page

252

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