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Durga Prasad, B.
- Cyclic Variations of Liquid Fuel–Air Mixing in a DISI IC–Engine
Abstract Views :195 |
PDF Views:3
Authors
Affiliations
1 Jawaharlal Nehru Technological University, Anatapur, IN
2 Birla Institute of Technology, Ranchi, IN
3 Department of Mechanical Engineering, JNTUA, Anantapur, IN
1 Jawaharlal Nehru Technological University, Anatapur, IN
2 Birla Institute of Technology, Ranchi, IN
3 Department of Mechanical Engineering, JNTUA, Anantapur, IN
Source
Automation and Autonomous Systems, Vol 4, No 7 (2012), Pagination: 261-266Abstract
Direct injection spark ignition (DISI) engines have a large potential to reduce emissions and specific fuel consumption. One of the most important problems in the design of DISI engines is the cycle-to-cycle variations of theflow, mixing and combustion processes. The Large Eddy Simulation (LES) based analysis is used to characterize the cycle-to-cycle fluctuations of the flow field as well as the mixture preparation in a realistic four-stroke internal combustion engine with variable charge motion system. Based on the analysis of cycle-to-cycle velocity fluctuations of in-cylinder flow, the impact of various fuel spray boundary conditions on injection processes and mixture preparation is pointed out. The joint effect of both cycle-to-cycle velocity fluctuations and variable spray boundary conditions is discussed in terms of mean and standard deviation of relative air–fuel ratio, velocity and mass fraction. Finally a qualitative analysis of the intensity of cyclic fluctuations below the spark plug is provided.Keywords
Large Eddy Simulation (LES), Cyclic Variations, Direct Injection Spark Ignition (DISI), Internal Combustion Engine, Air–Fuel Mixing, Fuel Spray Injection.
- Fabrication and Evaluating the Performance of Small Size Wind Turbine Blades with R21 and R22 Profiles
Abstract Views :226 |
PDF Views:3
Authors
Affiliations
1 Department of Mechanical Engineering, Intell Engineering College, Anantapur, Andhra Pradesh, IN
2 Department of Mechanical Engineering, JNT University College of Engineering, Anantapur, AP, IN
1 Department of Mechanical Engineering, Intell Engineering College, Anantapur, Andhra Pradesh, IN
2 Department of Mechanical Engineering, JNT University College of Engineering, Anantapur, AP, IN
Source
Automation and Autonomous Systems, Vol 3, No 7 (2011), Pagination: 327-330Abstract
Wind energy is a non polluting cost effective renewable energy source. Cost of generating power from wind has come down and at the same time, the demand for small size wind turbines is greatly increasing. In this paper the fabrication and testing the blades for stiffness, blade deflections are analyzed. Wind turbine blades are developed in R21 and R22 profiles using three variations in material compositions like fiber glass polyester resin, fiberglass polyester resin sandwiched with central beam made of UV hard foam and fiberglass with epoxy resin sandwiched with a central beam made of UV hard foam. Experimental results can be compared with FEA results for better blade model identification exclusively for small wind turbine system.Keywords
Small Size Wind Turbine Blades, Material Compositions, Blade Profile.- Preparation and Performance Study of Cottonseed Biodiesel Fuelled in Greaves 4-Stroke Single Cylinder Diesel Engine
Abstract Views :196 |
PDF Views:3
Authors
Affiliations
1 Sri Sai Ram Engineering College, Chennai-44, IN
2 Vel Tech. Dr.RR & Dr.SR Technical University, Chennai-62, IN
3 JNTU College of Engineering, Anantapur, IN
1 Sri Sai Ram Engineering College, Chennai-44, IN
2 Vel Tech. Dr.RR & Dr.SR Technical University, Chennai-62, IN
3 JNTU College of Engineering, Anantapur, IN