Abstract: A numerical analysis device executes: Step 102 of selecting a fluidic device model and a pipe model used for transient analysis from among fluidic device models and pipe models that are located between a start point and an end point set in the pipeline network model constructed as a 3D model of a pipeline network that includes fluidic devices and pipes; Step 104 of dividing the selected fluidic device model and pipe model into volume elements and into junction elements; Step 106 of deriving volumes of the respective volume elements obtained and pressure loss coefficients corresponding to the respective junction elements, based on the shape of the fluidic device model, a shape of the pipe model, and a physical quantities of the fluid, of associating the volumes with the volume elements, and of associating the pressure loss coefficients with the junction elements.

Abstract: An object is to clearly present not only the state of a controlled object but also a control process performed in a control device that controls the controlled object. Display system including a display control device that presents a calculation process performed in a control device for controlling a controlled object, that displays, on a display device, a control block diagram including a control component and a signal line and the state of the controlled object, and that changes the display format of the signal line in the displayed control block diagram according to a signal value transferred via the signal line.

Abstract: An object is to clearly present not only the state of a controlled object but also a control process performed in a control device that controls the controlled object. Provided is a display system (1) including a display control device (3) that presents a calculation process performed in a control device (4) for controlling a controlled object, that displays, on a display device (2), a control block diagram including a control component and a signal line and the state of the controlled object, and that changes the display format of the signal line in the displayed control block diagram according to a signal value transferred via the signal line.

Abstract: A numerical analysis device executes: Step 102 of selecting a fluidic device model and a pipe model used for transient analysis from among fluidic device models and pipe models that are located between a start point and an end point set in the pipeline network model constructed as a 3D model of a pipeline network that includes fluidic devices and pipes; Step 104 of dividing the selected fluidic device model and pipe model into volume elements and into junction elements; Step 106 of deriving volumes of the respective volume elements obtained and pressure loss coefficients corresponding to the respective junction elements, based on the shape of the fluidic device model, a shape of the pipe model, and a physical quantities of the fluid, of associating the volumes with the volume elements, and of associating the pressure loss coefficients with the junction elements.

Abstract: An operation panel (31) having a plurality of operation switches (32, 33) operable by an operator; a control device (34) that can control driving of an A pump (36) and a B on-off valve (37) as devices in a nuclear power plant in response to an operation of the operation switch (32, 33); and a sound output device (38) that outputs a name of the A pump (36) or the B on-off valve (37) as a device corresponding to an operation switch (32, 33) selected by the operation panel (31) as sound, thereby enabling to suppress occurrence of erroneous operations in the nuclear power plant, so that highly safe operations can be ensured.