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"Pompa jarum suntik dianggap sebagai salah satu peralatan medis kritis yang memberikan obat dan cairan dengan dosis terkontrol kepada pasien. Namun, di banyak negara berkembang, pompa jarum suntik konvensional seringkali diimpor  dari luar negeri dengan biaya tinggi. Karena itu  fasilitas kesehatan dengan sumber daya terbatas seringkali  kesulitan untuk mendapatkan dan memelihara perangkat ini, alternatif yang kurang tepat kadang  digunakan sehingga  menempatkan risiko signifikan  bagi pasien yang sensitif.  Untuk mengatasi masalah ini, prototipe pompa jarum suntik yang terjangkau dikembangkan dengan menggunakan teknologi pencetakan 3D. Perangkat ini dirancang dungeon komponen yang dicetak 3D dan komponen yang tersedia secara lokal, sehingga mengurangi ketergantungan pada komponen impor yang mahal. Akurasi volumetrik alat dievaluasi dengan jarum suntik plastik 10 mL menggunakan pendekatan gravimetri. Perangkat diatur untuk mengeluarkan volume air (0,3 - 5 mL) pada variasi laju aliran (1 - 20 mL / menit) dan menghasilkan kesalahan sistematis di bawah 6%.

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Syringe pumps are considered a critical piece of medical equipment that delivers controlled doses of drugs and fluids to patients. However, in many developing countries, conventional syringe pumps are often imported from abroad at a high cost. As health facilities with limited resources often struggle to procure and maintain these devices, less appropriate alternatives are sometimes used, putting sensitive patients at significant risk.  To address this issue, a prototype of an affordable syringe pump was developed using 3D printing technology. The device was designed with 3D printed parts and locally available components, thereby reducing dependence on expensive imported parts. The volumetric accuracy of the device was evaluated with a 10 mL plastic syringe using a gravimetric approach. The device was set to dispense varying volumes of water (0.3 - 5 mL) and resulted in a systematic error below 6%."

"This paper provides an explanation of the effects of cavity shape and frequency excitation to the vortex formation of the synthetic jet. In order to get comprehensive results, this study will be conducted by both computational and experimental methods.The experiment method prepared by applying hotwire probe on the center point of the synthetic jet orifice, so from here the researcher get the Ux (average airflow velocity from membrane movement)in a low voltage signal, then the data will be transferred to analog data converter within the record speed 10.000 data/s. The cavities shapes that will be applied are half-sphere, tubes, and conical. The diameter varieties of the orifice are 3 mm, 5 mm and 8 mm. the simulation is started by utilizing the flow rate data from the experiment which can be put in the simulation boundary condition. Furthermore, from visual data of flow contour from CFD simulation the qualities vortex ring formation from SJA can be determined. Based on this research result, the formation of vortex ring occurs at the configuration B3, T3, T5, K3 and K5 of the SJA. Meanwhile, the other types of the synthetic jet cavity which have 8 mm of orifice diameter is not producing the vortex ring."

"Aktuator jet sintetis menunjukkan hasil yang menjanjikan sebagai teknologi yang memungkinkan untuk kontrol aliran lapisan batas inovatif yang diterapkan pada permukaan eksternal, seperti sayap pesawat, dan aliran external, seperti yang terjadi dalam vektor jet. Karakteristik yang menarik dari jet sintetis adalah operasi nol-massa-fluks dan efek kontrol yang efisien yang memanfaatkan fenomena fluida yang tidak stabil. Pembentukan jet sintetis dalam aliran udara eksternal yang diam adalah permulaan untuk dipahami. Dalam karya ini, pandangan lebih dekat ke prinsip-prinsip menarik dan parameter signifikan di balik cara kerja jet sintetis diambil sebagai langkah pertama. Selanjutnya, simulasi dinamika fluida komputasi 2D dari interaksi antara aktuator jet sintetik dengan udara diam telah dilakukan untuk memberikan gambaran dan gambaran lebih lanjut tentang pembentukan jet sintetis dan counter-rotating-vortex pair (CVP). Hasil penelitian menunjukkan peningkatan magnitudo vortisitas secara periodik dan kecepatan rata-rata jet pada inlet 5,9 m / s dan kecepatan rata-rata hembusan jet sintetik pada lingkungan luar sekitar 6,07 m / s.

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Synthetic jet actuators is showing promising results as an enabling technology for innovative boundary layer flow control applied to external surfaces, like airplane wings, and to internal flows, like those occurring in jet vectoring. The appealing characteristics of a synthetic jet are zero-net-mass–flux operation and an efficient control effect that takes advantages of unsteady fluid phenomena. The formation of a synthetic jet in a quiescent external air flow is the beginning to be understood. In this work, a closer look to attractive principles and significant parameters behind how synthetic jet works is taken as a first step. Furthermore, a 2-D computational fluid dynamic simulation of interaction between synthetic jet actuator with quiescent air has conducted to give further details and illustration on the formation of synthetic jet and counter-rotating-vortex pair (CVP). The result showing an increasing in of vorticity magnitude periodically and the average velocity of jet at inlet was 5.9 m/s and the average velocity blown by synthetic jet at the external environment is approximately 6,07 m/s."

"This book presents the proceedings of the Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), (held in Tokyo on Aug. 21-24, 2017), which largely focused on advances in the theory, experiments on, and numerical simulation of turbulence in the contexts of flow-induced vibration, noise and their control. This includes several practical areas of application, such as the aerodynamics of road and space vehicles, marine and civil engineering, nuclear reactors and biomedical science, etc. Uniquely, these proceedings integrate acoustics with the study of flow-induced vibration, which is not a common practice but can be extremely beneficial to understanding, simulating and controlling vibration.The symposium provides a vital forum where academics, scientists and engineers working in all related branches can exchange and share their latest findings, ideas and innovations – bringing together researchers from both east and west to chart the frontiers of FSSIC.;This book presents the proceedings of the Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), (held in Tokyo on Aug. 21-24, 2017), which largely focused on advances in the theory, experiments on, and numerical simulation of turbulence in the contexts of flow-induced vibration, noise and their control. This includes several practical areas of application, such as the aerodynamics of road and space vehicles, marine and civil engineering, nuclear reactors and biomedical science, etc. Uniquely, these proceedings integrate acoustics with the study of flow-induced vibration, which is not a common practice but can be extremely beneficial to understanding, simulating and controlling vibration.The symposium provides a vital forum where academics, scientists and engineers working in all related branches can exchange and share their latest findings, ideas and innovations – bringing together researchers from both east and west to chart the frontiers of FSSIC.;This book presents the proceedings of the Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), (held in Tokyo on Aug. 21-24, 2017), which largely focused on advances in the theory, experiments on, and numerical simulation of turbulence in the contexts of flow-induced vibration, noise and their control. This includes several practical areas of application, such as the aerodynamics of road and space vehicles, marine and civil engineering, nuclear reactors and biomedical science, etc. Uniquely, these proceedings integrate acoustics with the study of flow-induced vibration, which is not a common practice but can be extremely beneficial to understanding, simulating and controlling vibration.The symposium provides a vital forum where academics, scientists and engineers working in all related branches can exchange and share their latest findings, ideas and innovations – bringing together researchers from both east and west to chart the frontiers of FSSIC.;This book presents the proceedings of the Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), (held in Tokyo on Aug. 21-24, 2017), which largely focused on advances in the theory, experiments on, and numerical simulation of turbulence in the contexts of flow-induced vibration, noise and their control. This includes several practical areas of application, such as the aerodynamics of road and space vehicles, marine and civil engineering, nuclear reactors and biomedical science, etc. Uniquely, these proceedings integrate acoustics with the study of flow-induced vibration, which is not a common practice but can be extremely beneficial to understanding, simulating and controlling vibration.The symposium provides a vital forum where academics, scientists and engineers working in all related branches can exchange and share their latest findings, ideas and innovations – bringing together researchers from both east and west to chart the frontiers of FSSIC."

"The book reports on the latest theoretical and experimental findings in the field of active flow and combustion control. It covers new developments in actuator technology and sensing, in robust and optimal open- and closed-loop control, as well as in model reduction for control, constant volume combustion and dynamic impingement cooling. The chapters reports oncutting-edge contributions presented during the fourth edition of the Active Flow and Combustion Control conference, held in September 19 to 21, 2018 at the Technische Universität Berlin, in Germany. This conference, as well as the research presented in the book, have been supported by the collaborative research center SFB 1029 on “Substantial efficiency increase in gas turbines through direct use of coupled unsteady combustion and flow dynamics”, funded by the DFG (German Research Foundation). It offers a timely guide for researchers and practitioners in the field of aeronautics, turbomachinery, control and combustion."