A numerical–analytical approach is described to investigate the process of impact interaction between a long smooth rigid body and the surface of a circular cylindrical cavity in elastic space. A non-stationary mixed...A numerical–analytical approach is described to investigate the process of impact interaction between a long smooth rigid body and the surface of a circular cylindrical cavity in elastic space. A non-stationary mixed initial boundary value problem is formulated with a priori unknown boundaries moving with variable velocity. The problem is solved using the methods of the theory of integral transforms, expansion of desired variables into a Fourier series, and the quadrature method to reduce the problem to solving a system of linear algebraic equations at each time step. Some concrete numerical computations are presented.The cylindrical body mass and radius impact on the proile of the transient process of contact interaction has been analysed.展开更多
The China Accelerator-Driven Sub-critical System（CADS） is a high intensity proton facility to dispose of nuclear waste and generate electric power.CADS is based on a 1.5 GeV,10 mA CW superconducting（SC） linac as a...The China Accelerator-Driven Sub-critical System（CADS） is a high intensity proton facility to dispose of nuclear waste and generate electric power.CADS is based on a 1.5 GeV,10 mA CW superconducting（SC） linac as a driver.The high energy section of the linac is composed of two families of SC elliptical cavities which are designed with geometrical beta 0.63 and 0.82.In this paper,the 650 MHz β=0.63 SC elliptical cavity is studied,including cavity optimization,multipacting,high order modes（HOMs） and generator RF power calculation.展开更多
文摘A numerical–analytical approach is described to investigate the process of impact interaction between a long smooth rigid body and the surface of a circular cylindrical cavity in elastic space. A non-stationary mixed initial boundary value problem is formulated with a priori unknown boundaries moving with variable velocity. The problem is solved using the methods of the theory of integral transforms, expansion of desired variables into a Fourier series, and the quadrature method to reduce the problem to solving a system of linear algebraic equations at each time step. Some concrete numerical computations are presented.The cylindrical body mass and radius impact on the proile of the transient process of contact interaction has been analysed.
基金Supported by National Natural Science Foundation of China(91426303)
文摘The China Accelerator-Driven Sub-critical System（CADS） is a high intensity proton facility to dispose of nuclear waste and generate electric power.CADS is based on a 1.5 GeV,10 mA CW superconducting（SC） linac as a driver.The high energy section of the linac is composed of two families of SC elliptical cavities which are designed with geometrical beta 0.63 and 0.82.In this paper,the 650 MHz β=0.63 SC elliptical cavity is studied,including cavity optimization,multipacting,high order modes（HOMs） and generator RF power calculation.
