Airflow Characteristic of UAV Quadcopter Propeller Blade Using Computational Fluid Dynamics (CFD)

In this study, the main focus is to study of air flow characteristic of UAV quadcopter propeller at incorporate blade profile using variable angle of attack (AoA) and revolution per minute (RPM) with its twisted blade using Computational Fluid Dynamics (CFD) / Ansys tool. Three propellers have been designed which Propeller 1 is untwisted while Propeller 2 and 3 twisted at certain angle. Three speeds which are 4000 rpm, 6000 rpm and 8000 rpm have been set for each propeller are being analysed using ANSYS Fluid Flow (fluent). The result shows the different thrust force generated by three propellers and Propeller 2 (33.6757 N) has the highest thrust force generated compared to Propeller 1 and 3 especially at 8000 rpm. This is due to the suitable twisting angle profile that has been set at the Propeller 2 at this operating speed. For comparison, Propeller 3 produce the highest thrust force of 18.44 N at 6000 rpm exceeding Propeller 2 which is 17.81 N. To summarize, each propeller blade profile has a distinctive aerodynamic performance and should be adopted by matching the flight operating condition. Higher rpm generate higher thrust force, and increase lift and drag coefficient

An analysis of wire-cut parameters in electric-discharge of titanium alloys

The present paper, focuses on wire electric dis-charge machine of titanium alloys. It can be considered as an attempt to develop two models of response variables, they are; the operating rate, the surface-roughness, and the rate of material removing, In the wire electric dis-charge machine process using the response surface methodology. The pilot plan is based on Minitab 18, and the analysis convey the major six parameters. ANOVA was applied to determine the importance of the advanced model, the test results confirm the validity and suitability of the advanced RSM-model. Lastly, the optimum parameter settings is improved

Aerodynamic Analysis on Noise Generated from Automotive Side Mirror Using CFD

The geometry of the car side mirror influences the aerodynamic noise. In this research will investigates aerodynamic analysis on noise from the side mirror using Computational fluid dynamic CFD. In study will design side mirror 2 type of design Honda Civic EG9 category sedan and Range Rover Evoque category SUV. Additionally, one of the goals of this study is to evaluate the model's CFD simulation the design built using the SolidWorks software, and the simulation run using the ANSYS software. The methodology research was by simulating the side mirror models with three velocity values (80 km/h,100km/h, 120 km/h). The analysis of the side mirror's drag force, acoustic contour, and velocity streamlines will determine the results that must be compared. Design 1, a sedan, produces a maximum acoustic power level of 77.21 dB when travelling at a high speed of 120 km/h. The maximum acoustic power level for Design 2 SUV cars travelling at 120 km/h is 75.71dB. In summary, design 2's side mirror has a higher acoustic power level than design 1's side mirror. the force that opposes the motion of a body that is filled with fluid. Design 1, a sedan, produces a drag force of 4.52 N at a high speed of 120 km/h. Design 2, an SUV, results in a drag force of 6.36 N at a high speed of 120 km/h. Lastly, this research benefits car manufacturing companies by changing design side mirror the can decrease cabin noise. This will improve ride quality, especially since electric vehicles dominate the market with no engine noise

Performance of Ti-6242 production using nano powder mixed with different dielectrics

The recent scenario of modern manufacturing is tremendously improved in the sense of precision machining and abstaining from environmental pollution and hazard issues. In the present work, Ti�6242 is machined through wire EDM (WEDM) process with powder mixed dielectric and analyzed the influence of input parameters and inherent hazard issues. WEDM has different parameters such as peak current, pulse on time, pulse off time, gap voltage, wire-speed, wire tension, and so on, as well as dielec�trics with powder mixed. These are playing an essential role in WEDM performances to improve the pro�cess efficiency by developing the metal removal rate. Even though the parameter’s influencing, the study of the nano dielectric effect in the WEDM process is very essential during the machining process due to the high discharge energy. In the present study, two different dielectric fluids were used, including deio�nised water, and nanopowder dielectrically, and analyzed the data by taking the response surface method to use program design expert 10. From this study, it is established that dielectric types and powder sig�nificantly improve performances with a proper set of machining parameters and find out the risk factor associated with the WEDM process

Enhancement of the performance surface roughness of wire cutting process by additives nano [AL2o3]

Experimental investigation and optimization of machining parameters in Wire EDM in terms adding particles Nano-reinforced titanium alloy composite abstracts among the various mechanical processes, the process of manufacturing in wire electrical discharge machines WIRE EDM is one of the most effective and cost�efficient manufacturing processes in the manufacture of titanium alloys Ti-6242. Ti has been dealt with in this article investigate each of operating parameters such as pulse on time, pulse off time, voltage and current insulating liquid with Nano powder [AL2O3] in WIRE EDM compounds titanium alloy. Experiments on titanium alloy carried out with powder mixture with particles size average of [5 nm]. Operating parameters such as voltage, pulse on time and pulse off time are taking into consideration four factors based on the response surface methodology. The performance of thesis evaluated WIRE EDM for ti-6242 using the surface roughness factor SURFACE ROUGHNESS. Quadratic models were developed between parameters and WIRE EDM responses by regression analysis is. The derived mathematical models are then optimized using Box-Behnken optimization based on desire analysis. The search indicates that the expected values of the model obtained to match the experimental values. Improvement in surface roughness is observed in terms of the values obtained from the Box-Behnken analysis

Enhancement of the performance surface roughness of wire cutting process by additives Nano [AL2O3]

Experimental investigation and optimization of machining parameters in Wire EDM in terms adding particles Nano-reinforced titanium alloy composite abstracts among the various mechanical processes, the process of manufacturing in wire electrical discharge machines WIRE EDM is one of the most effective and cost-efficient manufacturing processes in the manufacture of titanium alloys Ti-6242. Ti has been dealt with in this article investigate each of operating parameters such as pulse on time, pulse off time, voltage and current insulating liquid with Nano powder [AL2O3] in WIRE EDM compounds titanium alloy. Experiments on titanium alloy carried out with powder mixture with particles size average of [5 nm]. Operating parameters such as voltage, pulse on time and pulse off time are taking into consideration four factors based on the response surface methodology. The performance of thesis evaluated WIRE EDM for ti-6242 using the surface roughness factor SURFACE ROUGHNESS. Quadratic models were developed between parameters and WIRE EDM responses by regression analysis is. The derived mathematical models are then optimized using Box-Behnken optimization based on desire analysis. The search indicates that the expected values of the model obtained to match the experimental values. Improvement in surface roughness is observed in terms of the values obtained from the Box-Behnken analysis

Flow through various porosity of circle grid perforated plate with orifice plate flowmeter

Most of the plant industry is required to measure the flow rate more accurately to meet plant operation and cost accounting objectives. The opposing concern of improving flow meter accuracy is resolved by using flow conditioners. The distance of implementation of flow conditioner upstream of the orifice plate flowmeter also needs to be addressed. The purpose of this study is to analysis the porosity of the circle grid perforated flow conditioner towards orifice plate flowmeter’s accuracy and to determine the ideal distance of flow conditioner upstream of the orifice plate flowmeter. In this investigation, a variety of designs of the flow conditioners based on a porosity were installed with different distance upstream of the orifice plate in conjunction with the different disturbances to assess the effects of these devices on the measurement of the mass flow rate. Experimental investigation depends on three patterns of the perforated plate in a variety of diameter ratio or porosity which is β equals to 0.38 for the first plate, 0.5 for the second plate and 0.7 for the final plate. These fractal patterns will then react to five openings of speed controller of the centrifugal inline fan. Data gains for all three plates showed that there is an increment of pressure drop and change in discharge coefficient of the orifice with lower β value of fractal flow conditioner. This investigation also compares the various distance of flow conditioner upstream of the orifice plate flowmeter, thus proved that shorter pipe length produced higher pressure drop

Energy management in biodiesel production

Biodiesel economics revolves around both private and public features. Success for an incentive for producers and consumers needs to be sufficient to take part in the marketing arena with the currently accessible alternatives in the private dimension. “Whereas in the civic aspect, success is described in terms of the community objectives that prompt government’s intercession (i. e. subsidies) and whether biodiesel will attain the public goals in a remunerative manner compared to other alternatives if the public assessment is highly preferred, but the market incentives are deficient, there will not be a possibility to produce the biodiesel. On the other hand, if market values generate strong dividends among producers and purchaser, but the social gains are very small, or the costs are extremely high compared to other alternatives, then the activity may not represent a better use of scarce public resources. Biodiesel has become more enticing to the world recently due to its environmental benefits and the fact that it is made from renewable resources. The production cost of biodiesel is the main barrier to commercialization of the product. In the absence of tax relief, there is an urgent need to explore alternative feedstocks for the production of biodiesel. Furthermore, Properties impact of biodiesel and its feedstock, Engine type and its operating conditions Additives are effected by the biodiesel type and production characteristics. Where Engine power is always affected by properties of biodiesel, especially in heating value, viscosity, and lubricity

Discussion of the technology and research in fuel injectors common rail system

Common rail is one of the most important components in a diesel and gasoline direct injection system. It features a high-pressure (100 bar) fuel rail feeding solenoid valves, as opposed to a low-pressure fuel pump feeding unit injectors. Third-generation common rail diesels now feature piezoelectric injectors for increased precision, with fuel pressures up to 2,500 bar. The purpose of this review paper is to investigate the technology and research in fuel injectors common rail system. This review paper focuses on component of common rail injection system, pioneer of common rail injection, characteristics of common rail injection system, method to reduce smoke and NOx emission simultaneously and impact of common rail injection system. Based on our research, it can be concluded that common rail injection gives many benefit such as good for the engine performance, safe to use, and for to reduce the emission of the vehicle. Fuel injection common rail system is the modern technology that must be developed. Nowadays, our earth is polluting by vehicle output such as smoke. If the common rail system is developed, it can reduce the pollution and keep our atmosphere clean and safe