Abstract: A method of connecting three-dimensional structured meshes to form a conformal mesh, for solutions of flow problems, including: forming an interface by overlaying surfaces of two structured meshes; defining an interface set of mesh points in the interface; merging mesh points in the interface set that are within a predetermined distance of each other and projecting mesh points of one mesh in the interface that are within a predetermined distance of a line of the other mesh; generating an interface layer in the form of an unstructured mesh; and inserting a node at the center of each hexahedra, and producing an unstructured layer of cells between the two structured meshes by joining the nodes to the mesh points of the interface layer.

Abstract: A computerized apparatus, method and computer product for generating tests. The apparatus comprises: a processor; an interface for obtaining a test template associated with a computerized system that comprises a template segment comprising instructions and directives or related control constructs; a test generator for generating a test associated with the template segment, comprising: a simulator for determining a state of the system associated with an execution of the test; a selector for selecting a template instruction or segment from the test template based on the state of the system; and a generator configured to generate a multiplicity of instructions based on system's state and on the selected template segment, wherein the test generator further comprises a verifier configured to verify that a previously generated instruction is in line with the current state of the system and with the selected template instruction or segment.

Abstract: Algorithm for reconstructing grating profile in a metrology application is disclosed to numerically solve a volume integral equation for a current density. It employs implicit construction of a vector field that is related to electric field and a current density by a selection of continuous components of vector field being continuous at one or more material boundaries, so as to determine an approximate solution of a current density. The vector field is represented by a finite Fourier series with respect to at least one direction, x, y. Numerically solving volume integral equation comprises determining a component of a current density by convolution of the vector field with a convolution operator, which comprises material and geometric properties of structure in the x, y directions. The current density is represented by a finite Fourier series with respect to x, y directions. Continuous components are extracted using convolution operators acting on electric field and current density.

Abstract: A method for simulating an arc flash event on an electrical power system is disclosed. The virtual system model of the electrical system is modified to introduce a short circuiting feature. The standard to supply equations used in the arc flash event calculations is chosen. The arc flash event is simulated using the modified virtual system model in accordance with the chosen standard. The quantity of arc energy released by the arc flash event is calculated using results from the simulation. The report that forecasts an aspect of the arc flash event is communicated.

Abstract: Any primitive cells or blocks can be represented physically by a Barycenter compact model (or Barycenter model), and any black box model can also be physically represented by a Barycenter compact model physically. A hierarchical boundary condition between blocks is formulated by the Barycenter compact model. Hierarchical boundary condition problems between blocks can be limited within two levels only if using the Barycenter compact model.

Abstract: A transistor characteristic calculation apparatus using a large signal equivalent circuit model has a buffer trap circuit provided between a drain terminal and a source terminal such that a parallel circuit including a resistor and a capacitor, a diode, and another parallel circuit including a resistor and a capacitor are in turn connected in series.

Abstract: Electrical distribution network (EDN) improvement method for plug-in electric vehicles receives and stores in a database EDN configuration information, demography information and load information for simulating load of the EDN assets. The method dynamically updates the EDN configuration, demography information and/or load information to provide an efficient and customizable method of simulating a PEV load impact on an EDN configuration and apply improvements to the EDN in real time.

Abstract: Methods, systems and computer program products for assessing residual life of an airfoil, which would experience high cycle fatigue failure under at- or near-resonance vibration condition, are provided. The method includes receiving, at a processing system, at least one vibration response parameter associated with the airfoil. The method processes at least one cracked airfoil finite element model. Processing the cracked airfoil finite element model includes accessing the cracked airfoil finite element model, computing a modal stress intensity factor (SIF) of the cracked airfoil finite element model using fracture mechanics based finite element analysis, and computing a vibratory SIF based, at least in part, on the modal SIF and the at least one vibration response parameter. The method then computes a residual life indicator of the airfoil based, at least in part, on the vibratory SIF.

Abstract: A prior simulation of a velocity field and a temperature field is carried out, and snapshot data of the velocity field and that of the temperature field are collected during the prior simulation. Then principal component analysis on the collected snapshot data obtains velocity-field and temperature field dimension transformation matrixes, on the based on which the analysis models of the velocity field and temperature field having respective first degrees of freedom are converted into reduced degree-of-freedom models. Consequently, a simulation of the velocity field and the temperature field is carried out using models having respective reduced degrees of freedom (i.e., second degrees of freedom).

Abstract: A method for simulating deformation of rubber compound including silica particles and an interfacial coupling agent therefor is disclosed. Using a scanning transmission electron microscope (STEM), data of STEM images of the rubber compound are acquired. Based on the STEM image data, a dataset of a 3D structure of the rubber compound is reconstructed. Based on the dataset, a model of the rubber compound is generated. Using the model on which conditions are defined, a deformation calculation is made and a physical quantity is acquired. The rubber compound model comprises a rubber component model, silica particle models and interface models surrounding the silica particle models and defined as being harder than the rubber component model.

Abstract: The present disclosure relates to a method for verifying a digital design using a computing device. The method may include determining one or more tests associated with verifying the digital design and generating, using the computing device, a verification result by performing one or more verification runs on the digital design. The method may further include merging coverage data generated by the one or more verification runs and ranking the one or more tests based upon, at least in part, a first verification run having a first configuration and a second verification run having a second configuration, wherein the first and second configurations differ.

Abstract: A simulation environment verifies processor-sparing functions in a simulated processor core. The simulation environment executes a first simulation for a simulated processor core. During the simulation, the simulation environment creates a simulation model dump file. At a later point in time, the simulation environment executes a second simulation for the simulated processor core. The simulation environment saves the state of the simulated processor core. The simulation environment then replaces the state of the simulated processor core by loading the previously created simulation model dump file. The simulation environment then sets the state of the simulated processor core to execute processor-sparing code and resumes the second simulation.

Abstract: According to one aspect, an apparatus for computing a solution to a power flow problem for an electrical power system comprising a plurality of buses.

Abstract: A computational method is provided for predicting roadway failure due to degradation of the roadway over time as a function of the input loads, the roadway geometry, the material properties of the constituents in the asphaltic pavement, the shape, distribution, orientation and volume fractions of the constituents, and environmental conditions. The unique and new feature of the method is that it employs several physically based predictive methodologies simultaneously.

Abstract: A method for determining permeability of a subsurface formation includes measuring a parameter related to fluid content of the formation at a first time from within a wellbore penetrating the formation. A rate of entry of fluid from the wellbore into the formation is determined from the measurement of the parameter made at the first time. The permeability is determined from the rate of entry.

Abstract: Herein are provided methods, systems, computer-readable media, techniques and processes for surface manipulation in dental prosthesis design. These include providing an interface for modifying the surface of a model of a dental prosthesis. This interface may be provided to an operator, dentist, dental practitioner, or any other appropriate person via a computer and a computer display. The operator provides areas in which the operator would like to add a layer or other limited manipulation to the surface of the model. This may include an addition to the surface or a subtraction from the surface. As the operator is defining additional areas to manipulate on the surface (e.g., add or subtract a layer), invariably some of them will overlap. Unlike previous methods, this overlap will not cause the amount added to the surface to increase beyond the predefined limit for the layer. This allows operators to define cleanly added layers or cleanly subtracted layers from dental prostheses.

Abstract: A performance evaluation method of a vehicle member includes a calculation process for performing an analysis using a partial structure CAE model modeling a module where a member of a vehicle to be evaluated and a collision test device for conducting a collision test on the member are combined, and obtaining a value of a collision performance evaluation parameter in the partial structure CAE model; a calculation process for determining a boundary condition of the partial structure CAE model; a calculation process for determining a test condition of a member collision test device based on the boundary condition of the partial structure CAE model; and a test process for conducting a collision test using a physical member collision test device and a physical member, based on the set condition of the member collision test device.

Abstract: A method for design simulation includes partitioning a verification task of a design (100) into a first plurality of atomic Processing Elements (PEs-108) having execution dependencies (112), each execution dependency specifying that a respective first PE is to be executed before a respective second PE. The method further includes computing an order for executing the PEs on a multiprocessor device (32), which includes a second plurality of processors (44) operating in parallel and schedules the PEs for execution by the processors according to a built-in scheduling policy. The order induces concurrent execution of the PEs by different ones of the processors without violating the execution dependencies, irrespective of the scheduling policy. The PEs are executed on the processors in accordance with the computed order and the scheduling policy, to produce a simulation result. A performance of the design is verified responsively to the simulation result.

Abstract: An example apparatus includes a formation description module that interprets a formation description corresponding to a formation of interest, a fluid description module that interprets a high solids content fluid (HSCF) description, and a fracture modeling module that models a fracturing operation in the formation of interest in response to the formation description and the HSCF description. The apparatus further includes a fracture results module that provides a fracture treatment description parameter in response to the model.

Abstract: The present disclosure relates to a curve-fitting procedure for determining proximity effect device parameters in semiconductor fabrication. Methods presented herein are adapted to determine the impact of narrow width related edge effects on device characteristics by comparing two-dimensional (2D) and/or three-dimensional (3D) device simulations. Methods presented herein are adapted to determine the accuracy of conventional extraction methods utilizing non-rectangular gate device simulation.