Point kinetic calculation program MIPK

The point kinetic calculation program MIPK is a practical code based on the multiple integration (MI) method. The basic idea of this method is that the strong stiffness in the solution of point kinetic equations results in complicacy in the analytical characteristics of the function to be solved, the differentiation operation deteriorates the status while the integration operation improves the situation. Comparing this method with others, it can be seen that in the MI method, the integration manipulation is manifested systematically. A very simple explicit expression of time advancement solution of neutron density can be given under quadratic approximation. It's accuracy and applicability for various transient problems are really very satisfactory. In addition, the temperature feedback of the reactivity has also be taken into account in the process of kinetics equation solution of MIPK. The time step for a time advancement calculation can either be directly inputted by the user or can be determined through the program function of automatical adjustment of the time step according to a given accuracy. The code input has diverse options so that the user can make suitable choice to switch to different initial conditions and solve various physics problems. The code can also perform calculation for a ρ-T curve to meet the requirements of physics experiments. Therefore, in addition to the advanced and unique mathematic method, the MIPK code has advantages of fast running, friendly utilizing and multiple functioning