The marine medium-speed diesel engines are started by two methods;one is the electric motors,and the other air starting motors.Even though air starting motor is dependent of the engine types and sizes,it has been wide...The marine medium-speed diesel engines are started by two methods;one is the electric motors,and the other air starting motors.Even though air starting motor is dependent of the engine types and sizes,it has been widely used in this area due to its simplicity,convenience and reliability.The purpose of this paper is to give the designing parameters in order to make a proper "Air Starting Motor" using CFD.The aerodynamic approaches were given to understand the internal flow characteristics of the air starting motor.In addition,we have carried out the investigation of effects of tip clearance.In the calculations the tip clearance of air starting motor has been varied between 0,2.8,4.3 and 5.7% of blade span.The results of computation are the tip clearance increased to 2.8%,the torque decreased 24%,and there was no more large changes when the clearances increased to 4.3% and 5.7%.展开更多
FAW Jinbei listed on the domestic stock market is a company integrating production, R & D and Imp. & Exp. Its products are Jinbei SY1041/1040 series light truck, Jiefang CA1043 series light truck, CA1050/CA106...FAW Jinbei listed on the domestic stock market is a company integrating production, R & D and Imp. & Exp. Its products are Jinbei SY1041/1040 series light truck, Jiefang CA1043 series light truck, CA1050/CA1060 series truck, GMC S10 series light vehicle and, Jinbei SY6480/6474/6475 series minibus. The predecessor of FAW Jinbei is the Jinbei展开更多
基金supported by the Post BK21 project of Ministry of Education,Science & Technology,and National Research Lab.of Korea Research Foundation of Korea (R0A-2008-000-20069-0)
文摘The marine medium-speed diesel engines are started by two methods;one is the electric motors,and the other air starting motors.Even though air starting motor is dependent of the engine types and sizes,it has been widely used in this area due to its simplicity,convenience and reliability.The purpose of this paper is to give the designing parameters in order to make a proper "Air Starting Motor" using CFD.The aerodynamic approaches were given to understand the internal flow characteristics of the air starting motor.In addition,we have carried out the investigation of effects of tip clearance.In the calculations the tip clearance of air starting motor has been varied between 0,2.8,4.3 and 5.7% of blade span.The results of computation are the tip clearance increased to 2.8%,the torque decreased 24%,and there was no more large changes when the clearances increased to 4.3% and 5.7%.
文摘FAW Jinbei listed on the domestic stock market is a company integrating production, R & D and Imp. & Exp. Its products are Jinbei SY1041/1040 series light truck, Jiefang CA1043 series light truck, CA1050/CA1060 series truck, GMC S10 series light vehicle and, Jinbei SY6480/6474/6475 series minibus. The predecessor of FAW Jinbei is the Jinbei
