scholarly journals Optimasi Desain Turbin Pelton Menggunakan 3 Nozzle Dan Variasi Kemiringan Sudu Hingga 150 Menggunakan Metode Taguchi

2019 ◽  
Vol 9 (1) ◽  
pp. 13-18
Author(s):  
Rully Septiadi
Keyword(s):  
Nozzle Diameter

Penelitian ini bertujuan untuk menganalisa seberapa besar pengaruh jumlah nozzle, dankemiringan sudut semprotan masuk bucket terhadap putaran blade turbin, menentukan bagaimanabentuk komposisi faktor-faktor tersebut yang paling optimum untuk menghasilkan performa turbinpelton yang maksimal, menghitung berapa besar titik parameter lari pada turbin pelton dengankapasitas 3 nozzle dan kemiringan sudu -150, 00, dan 150 mengunakan metode taguchi.Metode penelitian menggunakan metode taguchi L-9 (33) = 9 dengan menggunakan 9 kalieksperimen dan parameter yang digunakan adalah jumlah Nozzle (N), Diameter Nozzle (m),Kemiringan sudut semprotan masuk bucket (....0), dengan masing-masing level, jumlah nozzleyang digunakan 1 nozzle, 2 nozzle, 3 nozzle. Diameter yang digunakan 2 inchi, 1.5 inchi, dan 1inchi. Sudut kemiringan sudu -150, 00, dan 150. Parameter pengujian yang diukur adalah tegangandan putaran blade, serta pengaruh masing-masing faktor untuk mendapatkan komposisi variabelyang optimum dan titik parameter lari.Berdasarkan pengujian dan analisis dengan menggunakan metode taguchi, komposisiparameter yang optimum adalah jumlah nozzle 3, diameter nozzle 1.5 inchi, sudut kemiringan sudu00. Dari hasil analisis didapat pengaruh masing-masing faktor jumlah nozzle 781.29, diameternozzle 800.78 dan kemiringan sudu 790.12. Daya yang dihasilkan turbin sebesar 40.24 Volt DC.Parameter lari di titik 4 dengan kecepatan 13.30 m/s, Hturun sebesar 7.89 m.

scholarly journals Study on the Effect of the Nozzle Diameter and Swirl Ratio on the Combustion Process for an Opposed-piston Two-stroke Diesel Engine

2014 ◽  
Vol 61 ◽  
pp. 542-546 ◽  
Author(s):  
Zhenyu Zhang ◽  
Changlu Zhao ◽  
Zhaoyi Xie ◽  
Fujun Zhang ◽  
Zhenfeng Zhao
Keyword(s):  
Diesel Engine ◽  
Combustion Process ◽  
Nozzle Diameter ◽  
Swirl Ratio

Study on the Working State of Jet-Mixing Apparatus

2014 ◽  
Vol 563 ◽  
pp. 219-223
Author(s):  
Jing Ma ◽  
Bai Jing Qiu ◽  
Run Yan ◽  
Bei Fen Zhu
Keyword(s):  
The State ◽  
Nozzle Diameter ◽  
Bench Test ◽  
Jet Mixing ◽  
Spray System ◽  
Jet Nozzle

In order to study the working state of the export of jet-mixing apparatus under different loads,by comparing the bench test and its application in spray system, the working state of jet-mixing apparatus is studied.The results show that, in the bench test, the export of jet-mixing apparatus is unloaded and the state of jet-mixing apparatus is absorbing pesticide; the jet nozzle whose diameter is 2mm and suction chamber whose diameter is 3mm of the jet-mixing apparatus produce a large number of bubbles, the suction chamber emerges cavitation. The export of jet-mixing apparatus is connected with the F110 spray system, the working state of jet-mixing apparatus with a 2mm diameter jet nozzle is sucking pesticide; the working state of 3mm and 4mm jet nozzle diameter is reflux. The export of jet-mixing apparatus is connected with the outlet of F110 spray system suction chamber.They do not emerge cavitation. The load on the export of jet-mixing apparatus affect the working state of jet-mixing apparatus, also has certain influence on cavitation in the suction chamber.

Computational Study of Atomization Models and Optimal Design of a Pressurized Inhaler

2021 ◽  
Vol 50 ◽  
pp. 123-134
Author(s):  
Anurag Tiwari ◽  
Siddharth Sharma ◽  
Vivek Kumar Srivastav ◽  
Anuj Jain ◽  
Akshoy Ranjan Paul
Keyword(s):  
Drug Delivery ◽  
Particle Production ◽  
Computational Study ◽  
Nozzle Diameter ◽  
Inhalation Therapy ◽  
Respiratory Drug Delivery ◽  
Minimum Diameter ◽  
Inhaler Device ◽  
Swirl Atomizer ◽  
Pressure Swirl

Respiratory drug delivery has been under the spotlight of research for the past few decades, mainly due to rapid increase of pulmonary diseases. This type of drug delivery offers the highest efficiency for treatment. Despite its numerous benefits, there are some drawbacks in the method of respiratory drug delivery-the most important being poor delivery efficiency and high drug deposition in undesirable regions, such as the oropharynx. This study is focused on improving pressurized inhaler device, which is one of the most used devices for inhalation therapy throughout the world using the results and findings obtained from numerical analysis. In this study, three atomizer models are investigated and found that pressure swirl atomizer model closely represents the atomization phenomenon from a pressurized inhaler device. Parametric study is carried out using three parameters: nozzle diameter, dispersion angle and sheet constant to optimize the performance of the device. It is revealed that a reduction in nozzle diameter and dispersion angle help in generating fine (smaller diameter) particles, whereas increase in sheet constant is responsible for fine particle production. The values of nozzle diameter, dispersion angle and sheet constant are tuned to get the particles with minimum diameter as output which is desirable for the drug particles to get deposited in the smaller airways of lungs and increase the efficiency of drug delivery and improve the device performance.

Influence of the Inlet Nozzle Diameter on the Air Gauge Dynamics

2017 ◽  
pp. 733-742 ◽  
Author(s):  
Michal Jakubowicz ◽  
Miroslaw Rucki ◽  
Gyula Varga ◽  
Radomir Majchrowski
Keyword(s):  
Nozzle Diameter

scholarly journals Preliminary Study on Mechanical Properties of 3D Printed Multimaterials ABS/PC Parts: Effect of Printing Parameters

2021 ◽  
Vol 32 (2) ◽  
pp. 87-104
Author(s):  
Pui-Voon Yap ◽  
Ming-Yeng Chan ◽  
Seong-Chun Koay
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Flexural Strength ◽  
Young’S Modulus ◽  
Young's Modulus ◽  
Flexural Modulus ◽  
Nozzle Diameter ◽  
Fused Deposition ◽  
Printing Parameters ◽  
Printing Speed

This research work highlights the mechanical properties of multi-material by fused deposition modelling (FDM). The specimens for tensile and flexural test have been printed using polycarbonate (PC) material at different combinations of printing parameters. The effects of varied printing speed, infill density and nozzle diameter on the mechanical properties of specimens have been investigated. Multi-material specimens were fabricated with acrylonitrile butadiene styrene (ABS) as the base material and PC as the reinforced material at the optimum printing parameter combination. The specimens were then subjected to mechanical testing to observe their tensile strength, Young’s modulus, percentage elongation, flexural strength and flexural modulus. The outcome of replacing half of ABS with PC to create a multi-material part has been examined. As demonstrated by the results, the optimum combination of printing parameters is 60 mm/s printing speed, 15% infill density and 0.8 mm nozzle diameter. The combination of ABS and PC materials as reinforcing material has improved the tensile strength (by 38.46%), Young’s modulus (by 23.40%), flexural strength (by 23.90%) and flexural modulus (by 37.33%) while reducing the ductility by 14.31% as compared to pure ABS. The results have been supported by data and graphs of the analysed specimens.

scholarly journals An experimental study on the effects of swirling oxidizer flow and diameter of fuel nozzle on behaviour and light emittance of propane-oxygen non-premixed flame

2017 ◽  
Vol 21 (3) ◽  
pp. 1453-1462 ◽  
Author(s):  
Alireza Javareshkian ◽  
Sadegh Tabejamaat ◽  
Soroush Sarrafan-Sadeghi ◽  
Mohammadreza Baigmohammadi
Keyword(s):  
Reynolds Numbers ◽  
Flame Length ◽  
Nozzle Diameter ◽  
Fuel Flow ◽  
Maximum Value ◽  
Fuel Nozzle ◽  
Flame Shape ◽  
The Stability ◽  
Blue Flame

In this study, the stability and the light emittance of non-premixed propane-oxygen flames have been experimentally evaluated with respect to swirling oxidizer flow and variations in fuel nozzle diameter. Hence, three types of the vanes with the swirl angles of 30?, 45?, and 60? have been chosen for producing the desired swirling flows. The main aims of this study are to determine the flame behaviour, light emittance, and also considering the effect of variation in fuel nozzle diameter on combustion phenomena such as flame length, flame shape, and soot free length parameter. The investigation into the flame phenomenology was comprised of variations of the oxidizer and fuel flow velocities (respective Reynolds numbers) and the fuel nozzle diameter. The results showed that the swirl effect could change the flame luminosity and this way could reduce or increase the maximum value of the flame light emittance in the combustion zone. Therefore, investigation into the flame light emittance can give a good clue for studying the mixing quality of reactants, the flame phenomenology (blue flame or sooty flame, localized extinction), and the combustion intensity in non-premixed flames.

Cost Optimization of Abrasive Blasting Systems: A New and Effective Way for Using Blasting Nozzles

2007 ◽  
Vol 329 ◽  
pp. 323-328 ◽  
Author(s):  
Vu Ngoc Pi ◽  
A.M. Hoogstrate
Keyword(s):  
Cost Optimization ◽  
Nozzle Diameter ◽  
New Model ◽  
Nozzle Wear ◽  
Efficiency Cost ◽  
Cleaning Cost ◽  
Cost Components ◽  
Optimal Diameter ◽  
Comprehensive Study ◽  
Abrasive Blasting

This paper introduces a new and comprehensive study on cost optimization of abrasive blasting systems. In the study, the effects of many parameters such as nozzle diameter, air pressure, efficiency, cost components as well as the effect of the nozzle wear on the cleaning cost were investigated. A new model for calculation of the optimal exchanged nozzle diameter (called “optimal diameter”) was proposed. With “optimal diameter” a new and effective way of using and making blasting nozzles was proposed and both the cleaning cost and the cleaning time can be reduced significantly.

Influence of flow parameters in the dual nozzle CO2-based vortex tube cooling system during turning of Ti-6Al-4V

2021 ◽  
pp. 095440622110574
Author(s):  
Khirod Mahapatro ◽  
P Vamsi Krishna
Keyword(s):  
Surface Roughness ◽  
Cutting Force ◽  
Vortex Tube ◽  
Cooling System ◽  
Cutting Temperature ◽  
Nozzle Diameter ◽  
Energy Separation ◽  
Optimum Conditions ◽  
Dry Cutting ◽  
Input Variables

Dual nozzle vortex tube cooling system (VTCS) is developed to improve the machinability of Ti-6Al-4V where cold-compressed CO2 gas is used as a coolant. The cooling effect is produced by the process of energy separation in the vortex tube and the coolant is supplied into the machining zone to remove the generated heat in machining. In this study, the responses such as cutting force (Fz), cutting temperature (Tm), and surface roughness (Ra) are analyzed by considering coolant inlet pressure, cold fraction, and nozzle diameter as input variables. Further optimization is performed for the input variables using the genetic algorithm technique, and the results at optimum conditions are compared with those of dry cutting. From the results, lower cutting force is observed at lower coolant pressure and cold fraction and higher nozzle diameter. The cutting temperature is minimized by increasing coolant pressure and cold fraction and by decreasing nozzle diameter. A better surface finish is observed at high coolant pressure and cold fraction and lower nozzle diameters. It is observed from the response surface method (RSM) that the coolant pressure is most significantly affecting all the responses. At optimum conditions, the cutting temperature and surface roughness are 35.6% and 66.14%, respectively, lower than dry cutting due to the effective cooling and lubricating action of the CO2 gas, whereas cutting force observed under the VTCS is 18.6% higher than that of dry cutting because of the impulse force of the coolant VTCS and thermal softening of the workpiece in dry cutting.

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