A numerical procedure for simulating the behavior of incompressible, viscous fluid in a casting / molding process. The method is based on classical fluid dynamic equations and uses control volume-finite element and numerical techniques to solve the momentum and energy equations to obtain solution for the variable parameters. The method incorporates five additional modules which simulate fluid flow in the shot sleeve, heat transfer between the die and the heat transfer fluid, die cooling by lubricant, formation of mend line. These additional simulation modules produce realistic boundary conditions, and replace many of the assumptions that would have to be made, to solve the governing equations. These added improvements ensure a faster convergence of the numerical solution and a more realistic simulation of the die casting process.
A device to deliver various combinations of scents in rapid succession to a user's nose in conjunction with video graphic images and or sounds. The device consists of an air compressor which forces air through a bank of valves. The valves can be mechanically, electrically or pneumatically actuated. The valves can be of an on / off or proportional flow type. Each valve delivers compressed air to a fragrance holder. The air carries away the scent molecules which have entered the gas phase. This air is then mixed with air from all other fragrance holders, whose inlet valves were open, in the packed column. The final mixture is delivered to the user via nasal tubing and is emitted right below the wearer's nose. Other devices such as a mask covering the nose or a stand, which the user positions their face next to, can be used to deliver the scent to the user. The scent is then drawn away into a scent scrubber. The invention can coordinate the delivery of scents so that they complement video or audiovisual images being displayed. This is done by utilizing a microprocessor or computer controller which receives the electronic output from the music video producing device.
A system, method and computer program for simulating vehicle energy use is provided. The system comprises a server, an energy modeling tool is linked to a server and generates energy consumption data that provides an energy consumption function of a vehicle under consideration. The data logging tool is linked to test vehicles and collects drive cycle data from real-world driving conditions. The data logging tool then communicates the drive cycle data to the server over a network. The fleet management tool is also linked to the server and combines the energy consumption data with the drive cycle data to estimate the energy use of a vehicle under consideration.
The invention discloses a thermal mechanical fatigue test system for a hollow air-cooled turbine blade, which includes a loading subsystem, a heating subsystem, an air cooling subsystem, a water cooling subsystem and a controlling subsystem, wherein the loading subsystem vertically clamps the turbine blade; the heating subsystem is horizontally placed in the middle part of the loading subsystem for heating the turbine blade; the air cooling subsystem is horizontally arranged and connected with the loading subsystem through a pipeline; the water cooling subsystem is horizontally arranged and connected with the loading subsystem and the heating subsystem through the pipeline; and the controlling subsystem is arranged at the upper part of the heating subsystem and connected with the loading subsystem, the heating subsystem and the air cooling subsystem through a cable. The thermal mechanical fatigue test system is used for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade. The thermal mechanical fatigue test system satisfactorily overcomes the difficulty for simulating the working stress field, the temperature field and the loading spectrum of the examination cross section of the hollow air-cooled turbine blade, and provides the technical basis and the safety guarantee for the safe and reliable working of the aero engine.
A process controlsystemsimulation technique performs real-time simulation of an actual process control network as that network is running within a process plant in a manner that is synchronized with the operation of the actual process control network. This real-time, synchronized simulationsystem includes a simulation process control network and a process model which are automatically updated periodically during the operation of the actual process control network to reflect changes made to the process control network, as well as to account for changes in the plant itself, i.e., changes which require an updated process model. The disclosed simulation system provides for more readily accessible and usable simulation activities, as the process control network and the process models used within the simulation system are synchronized with and up-to-date with respect to the current process operating conditions. Moreover, this simulation system is more accurate as it uses process models developed from the current state of the process whenever the simulation system beings to perform a simulation. Still further, the disclosed simulation system is easy to operate, as it uses the same user interface applications as the actual process control network and can be initialized and used at any time during operation the process plant without any significant configuration or set-up activities.