Palm oil mills in PT. Perkebunan Nusantara V PKS - Sei Galuh is a producer of crude palm oil CPO (Crude Palm Oil), which consists of several stations the processing of palm oil, one of which is the threshing station. Threshing station is the station there is a separation palm kernel process with the cluster in a way slammed into a rotating drum. The purpose of this research is to design the shape and dimension of the station threshing model palm oil mill in PT. Perkebunan Nusantara V - PKS Sei Galuh with scale of 1: 8 using Autodesk Autocad 2014 Software. Design of shapes and dimension threshing station model is divided into three groups, namely the design shape and dimension of auto feeder, design shape and dimension of thresher and design shape and dimension of screw conveyor. The design shape and dimension of auto feeder are 2 units sprocket and 11 plate shaped profile L. The design shape and dimension of thresher is a diameter of 230 mm and a length 500 mm. The design shapes and dimension of screw conveyor are 3 screw with a diameter of 100 mm and a length of each screw is 156 mm, 160 mm and 156 mm. Cover on the design of the shape and dimension of screw conveyor U-shaped profile with a diameter of 120 mm and a length of 620 mm cover.
Mechanical Engineering, Universitas Riau, Indonesia.
Electrical Engineering, Universitas Riau, Indonesia.
PT. Perkebunan Nusantara V – PKS Sei Galuh, Riau, Indonesia.
Computational Fluid Dynamics (CFD) field of research continues to advance with several new accomplishments, especially in the field of high speed craft design. This paper presents the application of advanced CFD simulations reported in the literatures in terms of software tools available, hull form optimization, resistance, and seakeeping analysis and propulsion system. It aims to review case studies of several methods utilized to conduct operational simulations that result in useful performance prediction of high speed craft. The simulations reviewed in this paper are referring to the research reported in the literatures over the last decade on patrol boats, catamarans, rescue boats and so on. Some notable analysis were discussed, e.g. resistance and seakeeping analysis, propulsion system, hull form optimization and multi physics We conclude that based on the vast resources available in the literature, CFD is one the best tool for designing high speed craft, however such work could be impacted more by its combination with optimization methods.
School of Ocean Engineering, Universiti Malaysia Terengganu, Terengganu, Malaysia
The application of appendages or trim control mechanisms such as the interceptor plate, stern flap and trim tabs have been widely used in recent years most notably on high speed planning hulls including stepped hulls. With the popular use of stepped hulls in the current market, it is of upmost importance to investigate and predict the resistance of these hulls in order elongate and diversify the lifespan and function of the planning hull. It is also important in a sense to increase the effectiveness of the hulls during operation at various speeds. Eventhough the use of interceptor plates has been catching up in recent years, there had been only a handful of studies investigating the impact of interceptors on the performance of planning hulls. In the present study, a scaled down design of a bare hull used by the Royal Malaysian Customs is used. The bare hull design will be analysed in the CFD software COMSOL Multiphysics with various speeds ranging from 0 to 35.9 m/s. The results that are going to be analysed and discussed later are the total resistance and the pressure contours around the hull. Next, a stepped hull design is analysed using step height of 50 mm to 80 mm. Finally, the optimum step height will be used to be fitted with various interceptor plate height of 18 mm, 22 mm, 26 mm and 30 mm. The effect of appendage, which is the interceptor on the performance of the hull will be analysed and compared to other hull configurations. Based on literature reviews and past studies, it is found that the interceptor plates are able to reduce the total resistance by 15% to 19%. However certain parameters were not taken into account for this study, including the trim angle which is assumed to be zero for all cases. This may cause a slight error in the results, but is deemed allowable for academic purposes.
Department of Aeronautical, Automotive and Ocean Engineering, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor, Malaysia
Ocean and Aerospace Engineering Research Institute, Indonesia