Alireza Shirneshan

[ 1 ] - Determination the Mechanical Stress on the Cutter Bar of the Harvesting Combine by Abaqus

In this paper, to simulate mechanical stress on the cutter bar of the harvesting combine during cutting of wheat stems, first, shearing strength of the stems was measured for various moisture content levels and cutting heights. After that the cutter bar of combine was simulated by Abaqus with the specified conditions. The results of the simulation showed that with increase in moisture content o...

[ 2 ] - Desiging, Part Selecting and Fabrication Procedure of the Vaccum Section of a Leaf Vacuum Shredder Machine

Due to the massive loss of leaves in parks and green spaces and big cities such as Isfahan and the lack of domestic production of leaf vacuum shredder machine for use in large green spaces of parks, the design and construction of the collecting and recycling by the system is need so the design of the vaccum section which is one of the main parts and includes entrance, channels and ducts and exh...

[ 3 ] - شبیه‌سازی عددی تأثیر گرمایش واکنشگر بر انتشار آلاینده مونوکسیدکربن در راه اندازی سرد موتور‌سیکلت

امروزه انتشار آلاینده های مختلف ناشی از راه اندازی سرد موتور سیکلت ها در جوامع شهری هر روز بیشتر می شود. یکی از راه های کاهش این آلاینده ها استفاده از مبدل کاتالیستی با گرمایش الکتریکی است. در پژوهش حاضر اثر استفاده از گرمکن در مبدل کاتالیستی سه راهه در شرایط راهاندازی سرد موتورسیکلت بصورت عددی بررسی شد. در این راستا دماهای مختلف گرمایش ( 600، 800 و 1000 کلوین) برای گرمکن، بر میزان انتشار ...

[ 4 ] - Artificial neural network model to predict the performance of a diesel power generator fueled with biodiesel

Alternative fuels are intensively investigated for the replacement of the diesel fuel. Today the diesel power generators are mostly used in the various industrial companies in Iran. Therefore, it is necessary to estimate the level of performance of the diesel power generators fueled with biofuels. For the first time, in this study, the prediction of the performance of a diesel power generator m...

[ 5 ] - Determination the Mechanical Stress on the Cutter Bar of the Harvesting Combine by Abaqus

In this paper, to simulate mechanical stress on the cutter bar of the harvesting combine during cutting of wheat stems, first, shearing strength of the stems was measured for various moisture content levels and cutting heights. After that the cutter bar of combine was simulated by Abaqus with the specified conditions. The results of the simulation showed that with increase in moisture content o...

[ 6 ] - Desiging, Part Selecting and Fabrication Procedure of the Vaccum Section of a Leaf Vacuum Shredder Machine

Due to the massive loss of leaves in parks and green spaces and big cities such as Isfahan and the lack of domestic production of leaf vacuum shredder machine for use in large green spaces of parks, the design and construction of the collecting and recycling by the system is need so the design of the vaccum section which is one of the main parts and includes entrance, channels and ducts and exh...

[ 7 ] - Comparison of the Effects of Hydrogen and Hydroxygen Additions and Oxygen Enrichment on the Emission Characteristics of EF7 Engine

In this study, the effects of hydrogen and hydroxygen additions and oxygen enrichment on the emission characteristics of a gasoline engine (EF7) were investigated and compared with each other. The simulation was launched by GT-Power at different engine speeds with 5 % to 15 % volume fractions for both of oxygen and hydrogen enrichment and 4.5 % to 9 % volume fractions of hydroxygen addition in ...

[ 8 ] - Investigation of the Effects of JP-4 Addition to Biodiesel-Diesel Blends on the Performance Characteristics of a Diesel Engine

In this study, the effects of JP-4-biodiesel-diesel blends and engine operating parameters on the performance characteristics of a diesel engine were investigated. The experimental tests were performed on a four-cylinder DI diesel engine. The Mixture-RSM method was applied to develop the mathematical models based on the experimental data. The results showed that the fitted models could be prope...

[ 9 ] - Simulation and investigation of the effect of oil flow rate, electric signal of flow control valve and controller on the performance of a wet clutch

The using of wet clutches and hydraulic control devices causes a smoothly torque transfer. In this study, a wet clutch was simulated in Simulink MATLAB software. Firstly the mechanical section of the clutch was modeled and then the hydraulic section was simulated with the addition of electric flow control valve and inlet and outlet of oil flow. Finally, the effects of oil flow rate, electric s...

[ 10 ] - Emission Characteristics of a Diesel Engine fueled with Diesel-biodiesel-JP-4 Blends

The main objective of this research is to study the effects of JP-4-biodiesel-diesel fuel blends and operating parameters on the emission characteristics of a CI engine. The experimental tests were performed on a four-cylinder DI diesel engine. The Mixture-RSM method was used to develop mathematical models based on experimental data. The results showed that with the increase of the biodiesel pr...

[ 11 ] - Tidal Electricity Generation by Turbine in Shahid Rajaee Port: A Numerical Simulation

Nowadays, energy extraction from sea waves as a renewable energy source has been increasingly considered. In addition, the growing demand for energy as a result of development of industrial activities, air pollution caused by the use of fossil fuels and greenhouse problems caused a new challenge for humankind. Tidal energy is a type of energy that is derived from converting the tidal power of t...

[ 12 ] - Tidal Electricity Generation by Turbine in Shahid Rajaee Port: A Numerical Simulation

Nowadays, energy extraction from sea waves as a renewable energy source has been increasingly considered. In addition, the growing demand for energy as a result of development of industrial activities, air pollution caused by the use of fossil fuels and greenhouse problems caused a new challenge for humankind. Tidal energy is a type of energy that is derived from converting the tidal power of t...

[ 13 ] - Prediction and Comparison of the Effect of N-butanol and Ethanol Addition to the Biodiesel-diesel Fuel Mixture on the Performance and Emissions Characteristics of a Diesel Engine

The main objective of this research is to study the effects of n-butanol and ethanol addition to the biodiesel-diesel fuel mixture on the performance and emission characteristics of a CI engine. The experimental tests were performed on a diesel engine. The RSM (Response Surface Methodology) method was used to develop mathematical models based on experimental data. According to the results, the ...