Adanta, Dendy
Department Of Mechanical Engineering, Faculty Of Engineering, Universitas Sriwijaya, Indralaya-30662, South Sumatera, Indonesia

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DIFFUSING SIGNAGE AS A VISUAL COMMUNICATION IN APPLIED OF PICO HYDRO TECHNOLOGY IN BATU ROTO, BENGKULU PROVINCE, INDONESIA Budiarso, Budiarso; Adanta, Dendy; Krypton, Arius; Naldo, Naldo; Satria, Hardika
ASEAN Journal of Community Engagement Vol. 2 No. 1 (2018)
Publisher : UI Scholars Hub

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Abstract

Communication plays an important role in spreading idea. This paper describes the important role of visual communication in our community engagement activity that has been done in 2017, particularly in signage and the power to difuse information of Pico Hydro technology within Batu Roto village, Bengkulu Province, Indonesia. The community engagement itself is based on multidiscipline point of view specifically communication and engineering. Pico Hydro is commonly used worldwide to generate electricity in rural area, thus it is very useful for rural electrification. We conducted research to fullfill the needs of our plan in the community engagement and used communication development theory to support the outcome of this program. Communication development theory has focus on disemination of innovation. The method of this study is desk research such as the psychology of colour and typography. The paper argues that the application of Pico Hydro technology would have more impact on the people of Batu Roto village if it is combines with the social science method of communication development through signage. The information that lies in the signage hopefully can spread the idea of practicing pico hydro in many houses in the Batu Roto village so it can solve the problem of lack electricity in the Bengkulu Province.
COMPARISON OF CFD SIMULATION WITH 3 TURBULENCE MODELS FOR BREASTSHOT PICO HYDRO TURBINE Dendy Adanta
Journal of Mechanical Science and Engineering Vol 7, No 2 (2020): Journal of Mechanical Science and Engineering
Publisher : Universitas Sriwijaya

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Abstract

The breastshot waterwheels are suitable for low head condition because it offers a stable efficiency compared to other types of turbine. In some cases, computational fluid dynamics (CFD) was utilized to predict the performance, geometry optimization or physical phenomena of a breastshot waterwheel, CFD offers easiness in terms of energy, time and cost than doing experimental test. Turbulence modeling is a mathematical method to approach the evolution of turbulence. The aim of this study is to identify the suitable turbulence model for a breatshot waterwheel. These three turbulence models were utilized: k-? standard, k-? scalable near wall function and SST k-?. The braking preloads in simulation was varied, which were 75 N m, 150 Nm, 225 N m and 300 N m. Based on grid convergence index (GCI), the 123k elements of mesh and timestep size of 0.002 s were used and when compared to the exact value, an error below 2% was found. Moreover, the k-? scalable near wall function model and the turbulent SST k-? model give the similar result in torque. Therefore, the simulation test to find torque will be more efficient if using the standard k-? turbulent model because it has computational time which is lower than the turbulent SST k-? model. For the eddy viscosity and turbulence intensity contour k-? standard turbulent model and k-? near wall scalable gives no significant differences, but SST k-? model doe. The simulation test to find eddy viscosity and turbulence intensity contour will be more accurate if using SST k-? model, because this model has the mean rate-of-rotation tensor function, ? , and the blending functions, that makes SST k-? model have better accuracy on the near wall calculation.
Diffusing New Media as Know-How Digital Communication in Troubleshoot Maintenance of Pico Hydro Technology in Bengkulu, Indonesia Naldo Naldo; Hardika Widi Satria; Dendy Adanta; warjito warjito
Jurnal Administrasi Bisnis Terapan Vol 2, No 1 (2019): Jurnal Administrasi Bisnis Terapan
Publisher : Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7454/jabt.v2i1.73

Abstract

Communication has an important role for spreading messages and ideas through various mediums. This research explains the important role of new media in community engagement activities and the dissemination of new information, innovations and technologies that have been done in 2017, especially for the graphic design via the internet on Pico Hydro's information technology in Batu Roto village, Bengkulu province, Indonesia. Community involvement itself is based on a special multidisciplinary perspective of communication and engineering. Pico Hydro is commonly used worldwide to generate electricity in rural areas, making it very useful for rural electrification. We conduct research to meet the needs of our plans in community engagement and use the theory of communication development to support the outcomes of this program. Communication development theory has a focus on dissemination of innovation. This research method is desk research of new media. This research argues that the application of Pico Hydro technology will have more impact on Batu Roto village community when combined with the method of social communication science development through digital media. The information contained in the infografic is expected to spread the idea to train the community in applying Pico Hydro technology for many homes in Batu Roto village so that it can solve the problem of electricity shortage in Bengkulu Province. Keywords: communication development; diffusion of innovations; infografic; pico hydro; psychology of colour; typographic; rural electrification; new media; digital communication
HISTORY OF UTILIZATION OF THE COMPUTATIONAL FLUID DYNAMICS METHOD FOR STUDY PICO HYDRO TYPE CROSS-FLOW Dendy Adanta; Dewi Puspita Sari; Nura Muaz Muhammad; Aji Putro Prakoso
Indonesian Journal of Engineering and Science (IJES) Vol. 2 No. 1 (2021): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v2i1.11

Abstract

Energy crisis in particular, electricity in the isolated rural areas of Indonesia is a very crucial issue that needs to be resolve through electrification . Compared to other options, pico hydro cross-flow turbine (CFT) is the better option to provides electrical power for the isolated rural areas. Studies to improve CFT performance can be undertaken analytically, numerically, experimentally, or a combination of those methods. However, the development of computer technology makes numerical simulation studies have become increasingly frequent. This paper describes the utilization of the computational fluid dynamic (CFD) approach in the pico hydro CFT method. This review has resulted that the recommended Renormalization Group (RNG) k-ε turbulence model for CFT CFD simulation because its absolute relative error is lower than standard k-ε and transitional Shear Stress Transport (SST). The absolute relative error for the RNG k-ε turbulence model of 3.08%, standard k-ε of 3.19%, and transitional SST of 3.10%. While for the unsteady approach, the six-degrees of freedom (6-DoF) are considered because more accurate than moving mesh. The absolute relative error for 6-DoF of 3.1% and moving mesh of 9.5%. Thus, based on the review, the RNG k-ε turbulence model and 6-DoF are proposed for the pico hydro CFT CFD study.
PENGEMBANGAN E-BOOK INTERAKTIF PADA MATAKULIAH SISTEM AC DI PROGRAM STUDI PENDIDIKAN TEKNIK MESIN ahmad burhan; m. amri; dendy adanta
JURNAL PENDIDIKAN TEKNIK MESIN Vol 2, No 1 (2015): JURNAL PENDIDIKAN TEKNIK MESIN
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v2i1.7204

Abstract

Penelitian ini bertujuan untuk menghasilkan e book interaktif pada matakuliah sistem AC yang valid dan praktis. Subjek penelitian adalah mahasiswa pendidikan teknik mesin kampus Indralaya tahun angkatan 2013. E book interaktif sistem AC dikembangkan melalui tiga tahapan berdasarkan model pengembangan Rowntree, yaitu : perencanaan, persiapan dan pengembangan. E book interaktif sistem AC ini dikembangkan untuk media pembelajaran agar mahasiswa dapat membangun pengetahuannya secara mandiri. Setelah dilakukan pengembangan dilakukan tahapan evaluasi Tessmer, yaitu : evaluasi ahli, evaluasi orang per orang (one to one), evaluasi kelompok kecil (small group), uji coba lapangan (field test). Hasil uji validitas, kevalitan dari e book interaktif sistem AC termasuk dalam kategori valid, sedangkan untuk persentase rata-rata kepraktisan dari evaluasi kelompok kecil dan uji coba lapangan adalah 80,5% dengan kategori praktis. Dengan demikian dapat disimpulkan bahwa e book interaktif pada matakuliah sistem AC di program studi Pendidikan Teknik Mesin valid dan praktis.
Application of Computational Fluid Dynamics Method for Cross-flow Turbine in Pico Scale Imam Syofi'i; Dendy Adanta; Aji Putro Prakoso; Dewi Puspita Sari
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 1 (2021)
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v6i1.12813

Abstract

Crisis electricity was a crucial issue in the rural area. Crossflow turbine (CFT) in pico in pico scale is the best option for electricity provider for rural areas. Due to its usefulness and development of computer technology, computational fluid dynamics method application for CFT study becomes increasingly frequent. This paper compiles the implementation of the computational fluid dynamic (CFD) approach for CFT on a pico scale. Based on the literature, the Renormalization Group (RNG)  turbulence model is recommended to predict the flow field that occurs in CFT because its error is lower than others turbulence models, the RNG  error of 3.08%, standard  of 3.19%, and transitional SST of 3.10%. Furthermore, six-degrees of freedom (6-DoF) is recommended because it has an error of 3.1% than a moving mesh of 9.5% for the unsteady approach. Thus, based on the review, the RNG  turbulence model and 6-DoF are recommended for the CFT on the pico scale.
CHASSIS FRAME DESIGN AND ANALYSIS BASED ON FORMULA SAE JAPAN Irsyadi Yani; Amir Arifin; Ahmad Irham Jambak; Gunawan Gunawan; Dendy Adanta; Barlin Barlin
Indonesian Journal of Engineering and Science (IJES) Vol. 2 No. 2 (2021): Table of Contents
Publisher : Asosiasi Peneliti Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51630/ijes.v2i2.19

Abstract

Formula Society of Automotive Engineers (FSAE) is a competition where the students design, build, and race the formula-style car. In this competition, the regulation stringent for the safety of participants. Chassis is one of the regulated parts among the other parts. This paper examines design process followed by chassis analysis by using Solidworks 2018 and Abaqus/CAE 6.14 software. The analysis process is carried out with Static Vertical Test, Torsional Stiffness Test, and Crash Impact Test using a safety standard in the form of a safety factor that must be more than 1 (SF> 1) to ensure the safety of the driver. The aim is to obtain an optimum final design based on FSAE Japan regulation as a reference for the Universitas Sriwijaya electric car team, namely Sriwijaya Eco in making the framework for the upcoming electric formula car.
The Effect of Argon Flow Rate on Mechanical Properties and Microstructures in Titanium Welding Dewi Puspita Sari; Amir Arifin; Gunawan Gunawan; Dendy Adanta; Ihsan Asura; Imam Syofii
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol. 6 No. 3 (2021): In Progress
Publisher : University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jemmme.v6i3.19082

Abstract

In the past of developing technology, the need for welding techniques to connect the structures of the component is increasing, especially tungsten inert gas (TIG). Several factors are considered in selecting material to be welded: toughness, density, and corrosion resistance. Titanium is a metal with a low density, has good heat transfer, and high melting point hence widely used for various purposes, such as petrochemicals, spacecraft, medical devices, and reactors. However, the titanium welding process is difficult because no absence of protection against air during the welding process results in high absorption of oxygen from free air (which causes carbon and hydrogen contamination). As a result, the mechanical properties quality of commercially pure titanium decreases. The main parameters of TIG welding to overcome high absorption of oxygen are arc length, welding current, welding travel speed, and flow rate of shielding gas (argon). For this case, this study investigates the effect of argon flow rate on mechanical properties and microstructures in titanium welding. Based on the results, the argon flow rate significantly affects the welding results; a high argon flow rate protects the welding from oxygen so that the hardness is not too high increased compared to low flow rates. Furthermore, it increases the hardness and decreases the strength of the material and ductility when fractured. Based on metallographic testing, the main metal area of commercially pure titanium has a uniform grain size with a hexagonal closed packed (HCP) phase. In contrast, the grain forms become elongated like straw, called platelet and acicular alpha in the HAZ and weld metal.