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All Journal Jurnal Inotera Angkasa: Jurnal Ilmiah Bidang Teknologi Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Ryan Anugrah Putra
Department Of Mechanical & Industrial Engineering, Faculty Of Engineering, Universitas Gadjah Mada
Computer Science & IT Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Numerical Simulation of the Gas-Liquid Flow Inside a Horizontal Static Mixer Ryan Anugrah Putra; Akhlisa Nadiantya Aji Nugroho
Jurnal Inotera Vol. 5 No. 2 (2020): July - December 2020
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1235.843 KB) | DOI: 10.31572/inotera.Vol5.Iss2.2020.ID104

Abstract

The gas-liquid flow inside a horizontal static mixer was numerically investigated by using Euler-Euler Computational Fluid Dynamics (CFD) simulations. The results confirm that the liquid superficial velocity plays a significant role on the mixing behavior of the gas and liquid. The mixing behavior in this present study at a liquid superficial velocity of 0.2 m/s was the worst both axially and radially. Increasing the liquid superficial velocity significantly improve the mixing between gas and liquid. However, the unwanted gas layer still can be found at the superficial liquid velocity less than 0.8 m/s. A good mixing behavior in this study was achieved at a relatively high velocity (i.e. larger than 0.8 m/s).
Gas-Liquid Flow in a Vertical Pipe Equipped with a Double Helical Swirl Separator Element Ryan Anugrah Putra; Akhlisa Nadiantya Aji Nugroho; Aditya Ramadhona; Erick Wisnu Kuncoro Baroto
Jurnal Inotera Vol. 5 No. 2 (2020): July - December 2020
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol5.Iss2.2020.ID110

Abstract

Two different gas-liquid flow behavior downstream a double helical swirl element inside a vertical pipe was observed in our preliminary experiment. The present Computational Fluid Dynamics (CFD) study confirms that the dynamics of gas-liquid flows inside the swirl separator is highly influenced by the liquid superficial velocity. The separation behavior in this work at a liquid superficial velocity of 0.1 m/s was the worst both axially and radially since the gas core cannot be sustained up to the outlet. The separation condition was improved by the increase of the liquid superficial velocity. The best separation condition in this study was achieved at the liquid superficial velocity of 1.0 m/s where the dense gas core can be maintained up to the outlet.
CFD Simulation on the Flow Inside a Fish Culture Tank Ryan Anugrah Putra; Habib Luthfi Ash Shiddiqie; Hafidh Naufal Ahmad; Akhlisa Nadiantya Aji Nugroho
Jurnal Inotera Vol. 7 No. 1 (2022): January-June 2022
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol7.Iss1.2022.ID167

Abstract

Aquaculture is an important sector for providing a food source. Technology may help the development of aquaculture including in the design of the fluid flow condition beneficial for aquaculture tank design and its operational parameters. In this study, the use of Computational Fluid Dynamics (CFD) to provide local fluid flow information was demonstrated. In the first case, the fluid flow condition generated by two different inlet orientations, namely the straight inlet and the angled inlet was investigated. The significant difference in the fluid flow pattern was observed by the help of the velocity streamlines. In the second case, the transient CFD simulation was used to determine the transient temperature distribution for the two different inlet orientations. The result also shows the significant different in the distribution which closely related to the generated fluid flow by both inlet orientations.
Mixing Characteristics Of Gas-Liquid Flow In A Static Mixer: A Numerical Study Ryan Anugrah Putra
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 12, No 2 (2020): November
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1619.729 KB) | DOI: 10.28989/angkasa.v12i2.654

Abstract

Mixing characteristics of gas-liquid co-current upward flow inside a vertical pipe equipped with a helical static mixer element were numerically investigated. The results from computational fluid dynamics (CFD) simulations with Euler-Euler model of three different length to diameter ratio (L/D) of the static mixer elements were compared. All simulated static mixers provide a better mixing condition in the comparison with the one without a static element. The sudden increase of rotational strength indicated by the liquid velocity curl was observed once the gas-liquid flows enter the static-mixer element zone. The smallest L/D static mixer provides the highest liquid velocity curl in the smallest axial distance providing the most effective mixing process among the tested elements. The best mixing characteristics shown by radial gas distribution was achieved with the static mixer with a smallest L/D.
CFD Study on the Influence of Liquid Viscosity on the Swirling Gas-Liquid Flow Ryan Anugrah Putra; Habib Luthfi Ash Shiddiqie; Indro Pranoto
Jurnal Inotera Vol. 7 No. 2 (2022): July-December 2022
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol7.Iss2.2022.ID194

Abstract

Swirling two-phase flow is important in industrial mixing and separation systems. In this work, the effect of liquid viscosity was investigated numerically using the Euler-Euler Computational Fluid Dynamics (CFD) model where the liquid and the gas acted as the continuous and dispersed phases, respectively. CFD simulations were performed to model the gas-liquid flow inside a horizontal pipe equipped with a static mixer element with liquid viscosities of 1, 5, 10, and 50 cP. The gas volume fraction contours in the central axial plane show that the evolution of gas distribution is strongly influenced by the liquid viscosity, especially in the region downstream of the element. The calculated results show that the higher the viscosity, the shorter the gas core downstream of the element. Gas separation after the element occurs over a shorter distance with higher liquid viscosity. A possible explanation is that the swirling flow decays faster at higher liquid viscosities, and the buoyancy force dominates over the centrifugal force.
Providing Aquaponics Facility to the Kali Code Area of Yogyakarta to Support Food Availability for the Local Community Ryan Anugrah Putra; Akhlisa Nadiantya Aji Nugroho; Habib Luthfi Ash Shiddiqie; Hafidh Naufal Ahmad; Himmah Mahmudah
Jurnal Inotera Vol. 7 No. 2 (2022): July-December 2022
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol7.Iss2.2022.ID195

Abstract

The community service program in the form of providing aquaponics facilities in the Kali Code area of Yogyakarta was implemented to support food availability in the community during the COVID 19 pandemic. This aquaponics facility is also expected to contribute to the development of the Kali Code region as an ecotourism area and an example of sustainable riverbank management. The water source used for the facility comes from the outlet of a wastewater treatment system that treats wastewater from several food stalls around the site. This is very beneficial in terms of conserving clean water resources as this aquaponics facility does not require a separate clean water supply. Several phases carried out in this program include the design, manufacture, and installation of aquaponics facilities. This program is also a means for students to explore ideas and use the skills they acquire during their studies to solve problems faced by the community. An example of how the program contributes to feeding the community is produced fish and vegetables are being used to support the consumption of the river school’s closing event at that location.
Transient Numerical Study to Determine the Effect of Inlet Angle Variation on Flow Conditions inside a Circular Aquaculture Tank Ahmad Wali El-Haq; Ryan Anugrah Putra
Jurnal Inotera Vol. 8 No. 1 (2023): January-June 2023
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol8.Iss1.2023.ID239

Abstract

Seeing how great the contribution and potential of the aquaculture sector to the fulfillment of food for the people of Indonesia, the development of aquaculture including the Recirculating Aquaculture System (RAS) is very important to be carried out intensively. An important aspect that should be considered for the development of RAS is maintaining water quality as the main medium of cultivation. Optimization of the aquaculture tank is an effort that can be conducted to achieve this goal. A transient numerical study to determine the effect of inlet angle variation on flow conditions inside a circular aquaculture tank was conducted to assess the optimum geometry for the application. Single-phase CFD simulations using the k-ω SST turbulent model were carried out to evaluate the effect of inlet nozzle angle variations. Three angle variations 0°, 45°, and 90° were selected and the resultant fluid flow conditions were analyzed. From the CFD results, it can be known that the optimum condition for the circular aquaculture tank is achieved for the angle 0° among the tested angle in this present study.
CFD Development for Multiphase Flows in HZDR Putra, Ryan Anugrah; Lucas, Dirk
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2016: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/iseth.2364

Abstract

Over the last 20 years, Helmholtz-Zentrum Dresden-Rossendorf (HZDR) has contributed in the development of Computational Fluid Dynamics (CFD) for multiphase flows. In the CFD department, a lot of efforts have been performed to provide CFD as a reliable simulation tool for the design, optimization and safety analyses of medium and large scale applications. The tool is expected to contribute in the improvement of the efficient use of energy and resources as well as safety operation. Most of the research activities are related to gas-liquid flows covering dispersed flows, stratified flows and mixture or transition flows. The development is carried out using Euler-Euler two or multi fluid model as the basis. The paper discussed some characteristics of the CFD model development in HZDR started with “simple”, reliable experimental data for validation and stepwise and continuous improvement. The examples of each characteristic were given. The discussions covered three CFD modeling frames which had been developed in HZDR; they were iMUSIG for dispersed flows, AIAD for stratified flows and GENTOP concept for mixture or transitional flows.
Co-Authors Aditya Ramadhona Ahmad Wali El-Haq Akhlisa Nadiantya Aji Nugroho Akhlisa Nadiantya Aji Nugroho Akhlisa Nadiantya Aji Nugroho Akhlisa Nadiantya Aji Nugroho Erick Wisnu Kuncoro Baroto Habib Luthfi Ash Shiddiqie Habib Luthfi Ash Shiddiqie Hafidh Naufal Ahmad Hafidh Naufal Ahmad Himmah Mahmudah Indro Pranoto Lucas, Dirk