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Sulistyawati, Wiwin
Universitas Airlangga
Electrical & Electronics Engineering Engineering

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STUDI HALUAN KAPAL SELAM BENTUK KAPSUL UNTUK MEMINIMALISIR HAMBATAN GESEK TERHADAP AIR LAUT Suranto, Purwo Joko; Sulistyawati, Wiwin
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

Submarine has been widely used both for military and for underwater research, various models of hull forms including capsule-shaped submarine. From the capsule form is to be modified in order to get bow shape forms the barrier fluid is small, so the use of power the main engine will be smaller and can save fuel. The shape and size of the bow of the submarine models to be analyzed consists of three (3) the shape and size of the different models. Model first (1) shaped like a capsule, the second model (2) measure the same length as the capsule form is only the tip of the bow made a sharp resembles a bullet, the third model (3) the same shape as the second model just the tip of the bow that resembles the size of a bullet extended. Fluid analysis using ANSYS CFD software version 15.0. where modeling and manufacturing of using ICEM CFD meshing, defining domain for the fluid and the boundary layer to limit the fluid domain using CFX-Pre, iteration calculation using CFX Solver Manager while to display the results of calculations using CFD-post. Meshing is used to achieve independent meshing, so if meshing plus will not affect the results obtained. Results Barriers fluid to the model of unity of 294 581 Newton, for the second model of 275 961 Newton while the third model obtained at 271 939 Newton.
PERANCANGAN RC (REMOTE CONTROL) BOAT PATROL 80 CM DENGAN PROPULSI WATERJET Sulistyawati, Wiwin; Suranto, Purwo Joko
Bina Teknika Vol 12, No 1 (2016): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

The government is still struggling to secure all the waters of the archipelago in maintaining and overseeing the security of its territory. This is due to the many islands that need human resources (HR) and require a lot of high-tech ships. So it is necessary to design a robot ElectricRemote Control Waterjet Patrol 80 (ERC_WP 80) which could serve as patrol boats and destroyers. Waterjet propulsion drive system has a motion if the vessel was excellent at relatively high speed boats and has good acceleration capabilities. Boats with jet propulsion system can operate in very shallow waters. This is due to all parts of the engine located under the hull, including propeller, shaft and shaft house. Waterjet advantages compared with the steering system / rudder is conventional waterjet propulsion system is able to turn the steering wheel with a smaller angle. Maneuverability and good seakeeping of a ship is strongly influenced by the shape of the hull. Selection of the hull shape is designed to perform parametric studies hull of the vessel Fast Patrol Boats comparator (KPC) 14 1 228 m and the vessel JS Patrol. On the back of the boat is made with a slope angle (chine angle) of about 20 degrees in order to gain the necessary lifting force without reducing the stability of the ship. While at the front end of the ship made a slope angle of about 30 degrees with the intent facilitate ship moving at high speed and reduce the impact when the waves break. Unmanned patrol boats are designed using radio control GensAce 4S 3300mAh
INVESTIGASI KARAKTERISTIK HAMBATAN PENTAMARAN BENTUK LAMBUNG WIGLEY DAN CHINE DENGAN MENGGUNAKAN CFD Sulistyawati, Wiwin
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Several studies of multi-hulls ship showed that hull resistance could be predicted from position between the each hull. The design optimization of the hull form could be considered by minimizing resistance, which is generally the sum of the viscous resistance and the wave making resistance of the ship model. This paper presents an investigation of pentamaran hull form with chine hull form to the effects of outriggers position, asymmetry, and deadrise angles on the resistance characteristics. This research investigated the resistance characteristics by modeling pentamaran hull form using chine with symmetrical main hull and asymmetric outboard on the variation deadrise angles: 25o, 30o, 35o and Froude number 0,1 to 0,7. We examined the calm water resistance characteristics of six pentamaran models with chine-hull form by variation of deadrise angles using Ansys CFD. Increasing the deadrise angle of chine hull form contribute to the resistance due to the interaction of the wave systems produced by each demihull. Strong interaction effect on the resistance coefficient component was found for change in the hull length as well. Compared to the wigley hull form, the maximum drag reduction of the chine hull form was reduced by 18.05% in deadrise 250, 16.1% in deadrise 300, and 18.19% in deadrise 350. While the smallest value of total resistance coefficient was generated from chine 350 at R/L:1/14 and R/L:1/7. Optimum hull form for minimum resistance has been obtained, so it is interesting to continue with angle of entrance and stem angle of hull for further research.
KARAKTERISTIK HIDRODINAMIK DESAIN LAMBUNG KAPAL DENGAN RISE OF FLOOR DAN TANPA RISE OF FLOOR PADA PERAIRAN DALAM DAN DANGKAL Sudjasta, Bambang; Sulistyawati, Wiwin
Bina Teknika Vol 13, No 1 (2017): Bina Teknika
Publisher : Fakultas Teknik UPN "Veteran" Jakarta

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Abstract

In principle Manoeuvrability vessel is strongly influenced by the design of the hull, propulsion system and steering system. Some of these elements are directly give a significant effect on the hydrodynamic force and moment when the ship maneuver. Analysis of hydrodynamic aspects is a stage that is absolutely necessary in the design process of a ship, especially for ships operating in waters with varying depths. By the time the ship through the shallow waters can increase frictional resistance surge barriers and the vessel which resulted in a decrease in speed boats. The hull form with rise of floor and without the rise of floor by focusing on the analysis of the obstacles, the character of the ship motion and acceleration criteria in deep and shallow water conditions. In numerical calculations for shallow water conditions (shallow water) with a ratio of water depth and draft of the ships, h / d = 1.2 and deep water (deep water) with h / d = 20. Evaluation of the obstacles, the character motion and acceleration for heave, roll, pitch and yaw is done by combining numerical methods through Hullspeed and AQWA Ansys program. From this numerical calculation, it can be analyzed with the rise of the hull form floor and without a rise of floor optimum for deepwater and shallow.
Co-Authors Sudjasta, Bambang Suranto, Purwo Joko