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All Journal ASEAN Journal of Systems Engineering Jurnal Penelitian Saintek Rotasi Jurnal Simetris Rekayasa Mesin Journal of Engineering and Technological Sciences Jurnal Rekayasa Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering Conference SENATIK STT Adisutjipto Yogyakarta Jurnal Perikanan Universitas Gadjah Mada Prosiding Seminar Nasional Pakar Prosiding Seminar Nasional Multidisiplin Ilmu International Journal of Applied Sciences and Smart Technologies ASEAN Journal of Chemical Engineering JOURNAL OF INFORMATION SYSTEM MANAGEMENT (JOISM) Journal of Mechanical Engineering Jurnal Ilmiah Teknik Mesin Poros Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Journal of Mechanical Design and Testing (JMDT) METAL : Jurnal Sistem Mekanik dan Termal Industrial Research Workshop and National Seminar Atom Indonesia

Deendarlianto

Departemen Teknik Mesin Dan Industri, Fakultas Teknik, Universitas Gadjah Mada. Jl. Grafika No. 2, Kompleks UGM, Yogyakarta 55281, Indonesia

Author-ID : 251088

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Other

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Pengaruh Padat Tebar dan Penggunaan Injektor Venturi terhadap Laju Pertumbuhan Udang (Litopenaeus Vannamei) dalam Bak Beton Romi Novriadi; Khoirun Nisa Alfitri; Supriyanto Supriyanto; Rudy Kurniawan; Deendarlianto Deendarlianto; Rustadi Rustadi; Wiratni Wiratni; Sinung Rahardjo
Jurnal Perikanan Universitas Gadjah Mada Vol 22, No 2 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jfs.60516

Tujuan dari penelitian ini adalah untuk melakukan evaluasi terhadap efek dari perlakuan padat tebar yang berbeda dan penggunaan injektor venture terhadap laju pertumbuhan udang Litopenaeus vannamei yang dipelihara di bak beton. Udang Vannamei (berat awal 0,3 ± 0,07 g) dimasukkan ke dalam 32 bak pemeliharaan dengan ukuran 8x8x1 m dengan padat tebar 300, 400, 500, 600 udang m-2 dan masing-masing padat tebar memiliki delapan pengulangan. Untuk pengamatan injektor venturi, dilakukan di dua kepadatan berbeda yakni 300 dan 600 udang m-2 dengan memasang injektor venturi masing-masing di tiga bak pengamatan dan dibandingkan dengan kontrol. Jumlah pakan yang diberikan ditentukan terlebih dahulu berdasarkan asumsi pertambahan berat udang Vannamei 1 g per minggu, rasio konversi pakan (FCR) 1,4 dan kematian mingguan sebanyak 3 %. Hasil pengamatan menunjukkan bahwa terdapat korelasi negatif antara peningkatan padat tebar dengan laju pertumbuhan udang. Berat akhir udang berada di kisaran 13,0±0,2, 11,6±0,5, 10,3±0,4 dan 9,3±1,0 g untuk padat tebar 300, 400, 500, dan 600 udang m-2. Laju pertambahan berat harian berada di kisaran 0,14±0,02 – 0,17±0,02 g dan semakin membaik ketika pada tebar diturunkan (P<0,05). Sementara, tidak ada perbedaan yang nyata untuk parameter FCR dan tingkat kelulushidupan udang (P<0,05). Injektor venturi dapat meningkatkan produktivitas produksi sebesar 6,63±0,094% untuk kepadatan 600 udang m-2 dan 7,97±0,054% untuk kepadatan 300 udang m-2 dibandingkan bak kontrol. Selama masa produksi, tidak ada pengaruh nyata untuk penggunaan empat padat tebar berbeda terhadap kondisi kualitas air media pemeliharaan dan tidak ada insiden munculnya wabah penyakit.

Studi Experimental Terhadap Perpindahan Kalor Pada Tumbukan Multiple Droplets Dengan Variasi Frekuensi Tetesan Indro Pranoto; Dannys Arif Kusuma; Teguh Wibowo; Fauzun Fauzun; Deendarlianto Deendarlianto; Indarto Indarto
METAL: Jurnal Sistem Mekanik dan Termal Vol 2, No 2 (2018)
Publisher : Department of Mechanical Engineering, Universitas Andalas

The effect of drop frequencies and surface temperature on the maximum spreading ratio, heat transfer rate and heat transfer coefficient of convection have been studied experimentally. The experiments were carried out by investigating different values of drop frequencies at 250, 400 and 600 drops/minute. The surface material of stainless steel with a temperature range of 120°C to 200°C was used in the study. An image processing technique was used to measure the diameter of droplets that were captured by using a high-speed camera. The results of the study show that by increasing frequency of drops has improved significantly the maximum spreading ratio, heat transfer rate and heat transfer coefficient of convection. The results also shown that by increasing the drop frequency has increased accordingly the droplet contact with the surface. It was found that, at higher surface temperature has contributed to the increase of the heat transfer rate and convection heat transfer coefficient. This study suggest that the peak and wetting limit conditions has occurred at the surface temperature of 180°C.

Fraksi Hampa Campuran Gliserin-Air dan Udara Pada Pipa Horizontal Berukuran Mini Farid Jayadi; Sudarja; Wenang; Indarto; Deendarlianto
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 6 No 1 (2020): Teknika STTKD: Jurnal Teknik, Elektronik
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Penelitian ini bertujuan untuk mendapatkan informasi tentang karakteristik aliran air-udara. Salah satu karakteristik yang penting dalam aliran dua fasa adalah Fraksi hampa. Penelitian ini dilakukan pada seksi uji berupa pipa kaca dengan diameter 1,6 mm posisi horisontal. Fluida yang digunakan adalah air-udara dan campuran air-gliserin dengan konsentrasi 20%. Kecepatan superfisial gas (JG)=0,033 – 4,935 m/s, dan kecepatan superfisial cairan (JL)=0,025 – 66,3 m/s. Data fraksi hampa diperoleh dari pengambilan gambar pada seksi uji menggunakan kamera berkecepatan tinggi. Hasil penelitian menunjukkan bahwa hubungan antara pola aliran dan fraksi hampa sangatlah berpengaruh didalam menentukan karakteristik aliran dua fasa. Pola aliran bubbly dan slug, fraksi hampanya meningkat dengan meningkatnya JG. Fraksi hampa yang diukur adalah sama atau lebih besar dari fraksi hampa homogen. Pola aliran churn, slug-annular, dan annular, tidak ada hubungan yang jelas antara JG dan fraksi hampa diamati ketika JG meningkat, karena tingginya slip rasio antara gas dan cairan. Pembuktian bahwa, untuk aliran bubbly dan slug, fraksi hampa dekat dengan garis homogen, sedangkan untuk aliran churn, annular, dan slug-annular yang jauh di bawah garis homogen. Ini menunjukkan bahwa rasio slip untuk kelompok kedua pola aliran lebih tinggi daripada 1

SIMULASI NUMERIK FENOMENA SINGLE DROPLET MENGGUNAKAN METODE VOLUME HINGGA DAN FRONT-TRACKING Dondi Kurniawan; Eko Budiana; Deendarlianto Deendarlianto; Indarto Indarto
Jurnal Ilmiah Teknik Mesin POROS Vol 15, No 2 (2017): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Abstract: A numerical simulation of single droplet phenomena is conducted using a finite volume method. Interface between different phases is tracked by using a front-tracking method. Governing equations used in present paper consist of the continuity equation, the Navier-Stokes equation and the front-tracking equation. The unsteady Navier-Stokes equations are solved implicitly using the finite volume method on staggered mesh. The interfacial term such as surface tension is negligible and the viscosity of the fluid is considered equal. The completion of pressure term is solved by Successive Over-Relaxation (SOR) method. The validation of present paper result is conducted by comparing to Tryggvasson (2012) result using explicit scheme. The advantage of this research is using implicit scheme that is unconditional stable. This research is the initial step to model a single droplet impact on solid surface. In this research will be discussed representation of interface and dynamics of interface reconstruction. Finite volume and front-tracking methods are expected to perform the problem well for more complete case.

Experimental Study on Hydrocracking Process of Asbuton Hydrocarbon Based on the Aromatic, and Waxy Residue Based on Paraffinic, by using Pt/Pd and γ-Alumina Catalyst in a Fixed Bed Reactor Bardi Murachman; Deendarlianto Deendarlianto; Nissaraly H.F.; Wakhid Hasyim
ASEAN Journal of Chemical Engineering Vol 14, No 1 (2014)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

The studies on the hydrocracking process to obtain the fuel by cracking of the carbon chain from the hydrocarbon compound both in the form of gas and liquid fuels have been carried-out massively by researchers over three decade. In the present experimental study, heavy hydrocarbon represented by asphaltic base materials (named as Extracted Asbuton) and paraffinic (waxy residue from Cepu oil refinery) were used as the object of the study; by observing the differences of the reaction mechanisms and the results that can be obtained. Here the operational conditions such as pressure, temperature, and time as well as the kinds of catalyst were considered as the main parameters. The experiments were carried-out under the similar operating condition such as temperature around 350 – 500oC, pressure around 5 up to 15 atmospheres, and evaporation time was (1 – 3) hours. As a result, it was obtained (a) the higher the temperature, pressure, and heating time, the higher hydrocracking conversion both of hydrocarbons, (b) reaction mechanism of hydrocracking by using asphalt extract as the material follows the Model 3 of the present work, in which asphalt vapor was trapped in catalyst surface, meanwhile the waxy residue followed the Model 1, (c) under the same condition, the conversion of asphalt extract was smaller than waxy residue, and (d) the conversion of asphalt extract using Pt/Pd catalyst was higher than γ-Alumina catalyst.Keywords : Asbuton, Waxy Residue, Hydrocracking, Reaction Mechanisms.

Karakterisasi Bubble yang Dihasilkan Microbubble Generator Tipe Aliran Swirl dengan Metode Image Processing Batubara, Yongki; Mawarni, Drajat Indah; Indarto; Deendarlianto
Prosiding Industrial Research Workshop and National Seminar Vol. 13 No. 01 (2022): Vol 13 (2022): Prosiding 13th Industrial Research Workshop and National Semin
Publisher : Politeknik Negeri Bandung

Microbubble Generator (MBG) merupakan sebuah alat yang mampu menghasilkan gelembung-gelembung berukuran mikro telah menjadi terobosan terkini dalam bidang aerasi karena memiliki banyak kelebihan dibandingkan dengan alat aerasi konvensional. Pada penelitian ini dikembangkan microbubble generator tipe aliran swirl dengan diameter outlet 30 mm, diameter nozzle gas 1,2 mm, dan jarak nozzle gas ke outlet sebesar 5 mm. Penelitian dilakukan untuk mengetahui karakteristik distribusi bubble dan performa microbubble generator dengan memvariasikan debit udara (QG) dan debit air (QL). Untuk mengetahui distribusi bubble digunakan high-speed camera melalui pengambilan gambar bubble yang diolah menggunakan teknik image processing. Digunakan pressure transducer untuk merekam tekanan yang terjadi pada inlet dan outlet MBG untuk mengetahui performa MBG melalui parameter hydraulic power (Lw) dan efisiensi hidrolis (Î·h). Hasil penelitian menunjukkan dari analisis probability density function (PDF), ukuran bubble yang diperoleh berada pada rentang 100-200 Î¼m. Nilai hydraulic power dan efisiensi hidrolis secara signifikan dipengaruhi oleh variasi debit air (QL) dibandingkan dengan variasi debit udara (QG). Dari hasil analisis wavelet teridentifikasi bahwa terjadi breakup dan coalescene bubble di setiap aliran air dan udara. Hasil dari penelitian diharapkan menjadi bahan pertimbangan dalam memilih dan merancang microbubble generator tipe aliran swirl.

PENGARUH JARAK NOSEL UDARA DENGAN OUTLET TERHADAP DIS-TRIBUSI UKURAN BUBBLE YANG DIHASILKAN OLEH MBG TIPE SWIRL Drajat Indah Mawarni; Indarto Indarto; Deendarlianto Deendarlianto; Wiratni Budhijanto
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.977

This research uses a swirl type MBG (MBG) with the gap variation between the air nozzle and the outlet of 1, 5 and10 mm. In this experiment, we used a tangential inlet of 25 mm and an outlet of 20 mm with a water flow rate of 20 – 70 l/min and an air flow rate range of 0.1 – 0.8 l/min, to determine the characteristics of MBG which include bubble distribution, pressure drop, hydraulic power, and efficiency. The probability of the diameter of the microbubble formed was in the range of 90 – 150 µm for all variations of the air nozzle gap. The larger the incoming water flow rate, the smaller the diameter of the bubbles formed, whereas if the water flow rate decreases, the diameter of the bubbles formed will increase. In contrast to the water flow rate, if the air flow rate increases, the diameter of the bubbles formed will increase, whereas if it decreases, the diameter of the bubbles will decrease. From the signal processing data, information was obtained about the comparison of the pressure drop of the three variations of the air nozzle gap, as follows: The higher the water flow rate, the pressure drop and hydraulic values increase significantly, while for air flow rate, the higher the air flow rate, the pressure drop and hydraulic power values will increase albeit not significantly. As for MBG efficiency, it will decrease significantly with increasing water flow rate and will increase insignificantly with decreasing water flow rate.

KARAKTERISTIK POLA ALIRAN DUA FASE GAS-CAIRAN NON-NEWTONIAN DI DALAM MICROCHANNELS BERPENAMPANG PERSEGI Haslinda Kusumaningsih; M. Rian Alif Madani; Muhammad Fakhri Alfath; Aldy Franstanata Ritonga; Deendarlianto Deendarlianto; Indarto Indarto
Jurnal Rekayasa Mesin Vol. 13 No. 2 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i2.1293

The aim of this study is to investigate the characteristics of gas-non-Newtonian liquids flow patterns in square microchannels. The microchannels that used in this study was made by acrylic material with horizontal orientation and the side length of 8x10-4 m. Water, Air, Carboxymethyl Cellulose 0.2%wt (CMC 0.2%wt) aquoeus solution, and Xanthan Gum 0.2%wt (XG 0.2%wt) aquoeus solution were used in this study as the liquid test. Moreover, nitrogen gas was used as gas test. The liquid superficial velocity was varied of 0.1-1 m/s. Then, the gas superficial velocity variation of 0.26-7.8 m/s. The differential pressure transducer was used in this study to measure the pressure drop, which is occurs in square microchannels. Whereas, The flow patterns were recorded by using the high-speed camera. Furthermore the flow pattern video was analyzed by using image processing method to obtain the flow pattern charcteristics. The two-phase flow pressure drop of all gas-Newtonian/non-Newtonian liquids two-phase flows in this study increase by increasing JL in the same JG. The flow patterns that occur in this study are bubbly, slug, slug-annular and churn. The viscosity and rheological parameter of liquids test influenced the characteristic of flow patterns. The flow patterns in this study were plotted in the flow patterns map and suitable with the flow patterns transisiton lines based on the previous study. Likewise, the experimental pressure drop shows the good agreement with the pressure drop prediction correlation by Kawahara et al. (2011).

PENGARUH TEGANGAN PERMUKAAN PADA TEBAL FILM CAIRAN DAN KARAKTERISTIK GELOMBANG ANTARMUKA ALIRAN DUA FASE STRATIFIED HORIZONTAL Ari Prasetyo; Setya Wijayanta; Indarto Indarto; Deendarlianto Deendarlianto
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1212

This experimental study aims to examine the effect of the surface tension on the characteristics of unidirectional air-liquid interface waves on a horizontal pipe. The pipe used is an acrylic pipe with a diameter of 26 mm. To vary the surface tension, the working fluid consisted of 100% water and water mixed with 2% and 5% butanol. with surface tension (σ) values of 72, 58, and 42.5 mN/m, respectively. The wave characteristics studied in this research include the interface wave structure which is analyzed from visual observations and parameters by image processing. The superficial velocities of gas and liquid were varied in the range of 4-16 m/s and 0.02-0.1 m/s, respectively. Wave velocity and frequency were determined by using cross-correlation and power spectra density (PSD) from time-series data of liquid film thickness. Generally, velocity increases as the gas superficial velocity and surface tension decrease, the high gas superficial velocity the dominant frequency is high.

ANALISA KECEPATAN SLUG ALIRAN DUA FASE DI DOWNSTREAM T-JUNCTION MINICHANNEL HORIZONTAL DENGAN RADIUS BELOKAN (r/dh) 0.7 Untung Surya Dharma; Calista Anjani Dwiputri; Eko Nugroho; Asroni Asroni; Deendarlianto Deendarlianto; Indarto Indarto
Jurnal Rekayasa Mesin Vol. 13 No. 3 (2022)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v13i3.1432

Uneven distribution of the phases between in the main channel when two-phase flow passes through the T-junction it can cause the formation of slug flow which affects performance in the downstream area. The slug is formed due to the acceleration of the gas phase moving towards an average or stable velocity. The bend radius of the T-junction affects the formation of slug because the radius can increase the velocity of the gas phase. Research on the slug velocity was carried out in the downstream region of the horizontal mini channel T-junction. The working fluid used is air as the gas phase and water. The flow pattern and velocity slug analysis were carried out by visualizing the flow at a distance of ±30 mm from the T-junction, that works as a mixer of the working fluid. High-speed camera is used to record video and processed in the form of image processing with the MATLAB program. Two-phase flow slug velocity analysis conducted in the downstream area of the horizontal minichannel T-junction, it can be concluded that the slug velocity tends to increase linearly with increasing superficial velocity of air and water. Comparison of slug velocity experimentally with the results of calculations using the equations of Fukano and Kariyasaki (1993) and Sudarja et al (2018) shows conformity with less than 10% of error margin, while Nicklin et al (1962) is ±30%.

Co-Authors . Agato Abd. Rasyid Syamsuri Achilleus Hermawan Astyanto Afisna, Lathifa Putri Agato, Agato Akhmad Zidni Hudaya Akmal Irfan Majid Al Huda, Luqman Al-amin, A. S. Aldy Franstanata Ritonga Alfeus Sunarso Alim Isnansetyo Alva Edy Tontowi Andhika Satria Pratama Anggita Gigih Wahyu Iriawan, Anggita Gigih Wahyu Ari Prasetyo Arif Widyatama Arirohman, Ilham Dwi Arista, E. P. Asroni Asroni Aswati Mindaryani Bambang Triyatmo Bardi Murachman Batubara, Yongki Benny Arif Pambudiarto Bertha Maya Sopha Budiman, A. A. Budiyanto, N. R. Calista Anjani Dwiputri Dannys Arif Kusuma Dedy Kurniawan Dodi Satriawan, Dodi Drajat Indah Mawarni Dwi Budi Santoso Dwi Yuliaji Eko Budiana Eko Nugroho Fahadha, Rizqa Ula Fajarningrum, Nurmala Dyah Farid Jayadi Fauzun Fauzun Fellando Martino Nugroho Fitrah Qalbina H. A. Gunawan, H. A. Hananto, Leila Hanjani Haslinda Kusumaningsih Heppy Kristiyani, Heppy I Indarto INDAH ISTIQOMAH Indarto Indarto Indarto - Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indarto Indro Pranoto Kharisma, Sunandi Khoirun Nisa Alfitri Kumara Ari Yuana Kurniawan, Dondi Kusumaningsih, Haslinda Lathifa Putri Afisna M. Fendy Kussuma Hadi Sufyan M. Juarsa M. Rian Alif Madani Mariyadi, S. A. Maryadi , Shendy Akbar Medha, Akbar Yuga Adhikara Muhammad Fakhri Alfath Mulya Juarsa Nissaraly H.F. Nugroho, Fellando Martino Oktaviandi, R. Oktaviandi, Ryan Okto Dinaryanto Pambudiarto, Benny Arif Pamungkas, A. E. Rachmawan Budiarto Raharjo, E. P. A. Rio Budiman Romi Novriadi Roy Waluyo Rudy Kurniawan Rustadi Rustadi Samsul Kamal Samuel Hartono Samuel Hartono Septiana Ria Prihandita Setiawan, P. H. Setya Wijayanta Shima Bhaskara Ayuningrum Sinung Rahardjo Sudarja Supriyanto Supriyanto Teguh Wibowo Teguh Wibowo Teguh Wibowo Thomas S. W. Untung Surya Dharma Untung Surya Dharma, Untung Surya Wakhid Hasyim Wenang Wibawa Endra Juwana Wibawa Endra Juwana, Wibawa Endra Widodo, Gilang Destya Wiratni Budhijanto Wiratni Budhijanto Wiratni Wiratni Wiratni Wiratni, Wiratni Yuliaji, D. Yundari, Yundari Yusuf Rahman

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