Abstract: A temperature calculation method for a substrate, the temperature calculation method includes: calculating, by a computer performing a circuit simulation based on a resistance equivalent to a component that joins two substrates included in a target model of an analysis, a value of a current that flows through the component or voltage values in respective end portions of the component; setting, based on model information for expressing the target model, the current value or the voltage values in a first surface and a second surface that are included in surfaces of an outer shape of the component and that are in contact with the respective substrates; and calculating a first current density distribution of the component by performing a first electrical analysis according to the setting.

Abstract: A method can include receiving mechanical information of a geologic environment and location information of natural fractures of the geologic environment; using a model of the geologic environment, calculating at least strain associated with hydraulic fracturing in the geologic environment; calculating at least microseismicity event locations based at least in part on the calculated strain; calibrating the model based at least in part on the calculated microseismicity event locations and based at least in part on measured microseismicity information associated with the geologic environment to provide a calibrated model; and, using the calibrated model, determining an increase in reactivated fracture volume associated with hydraulic fracturing in the geologic environment.

Abstract: A system and method for pit design that that operates directly on a geological model without creating a three dimensional block model thereby minimizing modeling dilution. A resource in a deposit may be divided into a set of base resource units that closely conform to the resource geometry and value distribution and that can be mined by the equipment assumed to perform the excavation. A resource increment (RI) is defined by a base resource unit and any resource and waste over the base resource unit which is assumed to be excavated in conformance with slope stability and safe practices forming an approximation of a truncated inverted cone. A systematic sorting and grouping process of the RIs iterates down a list of RIs and identifies RIs and/or RI groups that add value to the pit while excluding RIs and/or RI groups that do not add value.

Abstract: A system for using digital twins for scalable, model-based machine predictive maintenance comprises a plurality of digital twins and a simulation platform. The plurality of digital twins correspond to plurality of remotely located physical machines. Each respective digital twin comprises: product nameplate data corresponding to a unique physical machine, one or more simulation models, and a database comprising run time log data collected from sensors associated with the unique physical machine. The simulation platform is configured to process simulation models corresponding to the plurality of digital twins using a plurality of multiprocessor computer systems.

Abstract: A process for estimating the lubricant viscosity in a bearing comprises the steps of: monitoring acoustic emissions from the bearing with an acoustic emission sensor; monitoring the bearing for at least one of speed, load and temperature; demodulating the acoustic emission signal from the acoustic emission sensor; calculating the root mean square values of the demodulated acoustic emission signal and storing the calculated root mean square values; aligning the root mean square values with values of one or more of speed, load and temperature and storing the aligned values; using the aligned root mean square values, and at least one of speed, load and temperature in a model which calculates viscosity and/or viscosity ratio from the aligned values.

Abstract: Systems and methods for simulating an effect of multiple seismic sources concurrently on a geologic formation are provided. Data is read from a seismic source file that describes at least two seismic source types. The concurrent propagation of acoustic energy from the at least two seismic sources types through the geologic formation is modeled. A seismic output file is then generated.

Abstract: Systems and methods are provided for implementing a parallel Expectation Minimization algorithm for generalized latent variable models. Item response data that is based on responses to items from multiple respondents is accessed. The item response data includes data for multiple response variables. The item response data is analyzed using a generalized latent variable model, and the analysis includes an application of a Parallel-E Parallel-M (PEPM) algorithm. In a parallel Expectation step of the PEPM algorithm, the respondents are subdivided into N groups of respondents, and computations for the N groups are performed in parallel using the N processor cores. In a parallel Maximization step of the PEPM algorithm, the response variables are subdivided into N groups of response variables, and computations for the N groups of response variables are performed in parallel using the N processor cores.

Abstract: In some embodiments, a system, as well as a method and an article, may operate to generate a first matrix, based on equations that model a reservoir, that includes mass conservation and volume balance information for grid blocks in the reservoir; to generate a second matrix, based on the first matrix, that includes saturation information and pressure information of each grid block; to remove the saturation information from the second matrix to generate a third matrix that includes only pressure information; to solve the third matrix to generate a first pressure solution; to solve the second matrix based on the first pressure solution to generate a first saturation solution and a second pressure solution; and to use the first saturation solution and the second pressure solution to generate a solution of the first matrix. Additional apparatus, systems, and methods are disclosed.

Abstract: Systems and techniques are described for topography simulation of etching and/or deposition on a physical structure. The structural information can be represented using a three-dimensional (3D) voxel grid data structure. For each particle emitted by a Monte-Carlo particle emission model, a topographical modification caused by the particle can be determined by (1) calculating fluxes, (2) evaluating surface reactions, and (3) modifying the physical structure. The effect of the etching and/or deposition on a physical structure can be displayed by rendering the 3D voxel grid data structure.

Abstract: A method for vascular assessment is disclosed. The method, in some embodiments, comprises receiving a plurality of 2-D angiographic images of a portion of a vasculature of a subject, and processing the images to produce a stenotic model over the vasculature, the stenotic model having measurements of the vasculature at one or more locations along vessels of the vasculature. The method, in some embodiments, further comprises obtaining a flow characteristic of the stenotic model, and calculating an index indicative of vascular function, based, at least in part, on the flow characteristic in the stenotic model.

Abstract: An example method includes providing source light to an optical fiber deployed in a downhole environment, receiving backscattered light from the optical fiber, and producing one or more optical interferometry signals from the backscattered light. The method also includes converting each of the one or more optical interferometry signals to an electrical signal and digitizing each electrical signal to obtain one or more digitized electrical signals. The method also includes deriving acoustic activity values as a function of time and position from the one or more digitized electrical signal. The method also includes applying at least some of the acoustic activity values to a flow prediction model to obtain a predicted fluid flow as a function of time, wherein the flow prediction model includes a proppant compensation value or factor. The method also includes storing or displaying the predicted fluid flow.

Abstract: A method and system for visualization of a direction of a fluid flow in heterogeneous porous medium in hydrocarbon reservoirs based on the streamlines. The method allows for constructing the detailed and accurate model of a direction and a volume of the fluids being transferred between the wells and can be used for analysis of waterflooding and hydrodynamic connectivity between the wells used in oil and gas reservoirs with a large number of wells. The visualization method can be used both for analysis of instantaneous fluid flows at the current calculation step of hydrodynamic simulator and for analysis of fluid flows accumulated over several calculation steps.

Abstract: A method, system and computer program product for integrating plural modalities of information to obtain values for a specified attribute of a given system. In one embodiment, data of a first modality, conveying a first source of data of a first type of the system is acquired; a simulator is configured with settings of physical sensors; and data of a second modality from the system, conveying a second source of data of a second type of the system is acquired. The data of the second modality is converted to data of the first type, while configuring a virtual set of sensors to enable acquisition of the converted data of the second modality; and an adjoints equipped simulator is configured with settings of the virtual sensors, to mimic collection of data of the first type, while configured to measure data of the second type.

Abstract: A simulation method of a surface water movement process in surface irrigation, comprising: acquiring surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data of a target border check; substituting surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data into improved full hydrodynamic equations, and performing numerical solution on improved full hydrodynamic equations to obtain a simulated surface water depth value and simulated values of vertical integral average velocities of an irrigation water flow in x-coordinate and y-coordinate directions of a certain measurement site in the target border check at a certain time; and obtaining simulated values of unit width discharge of the irrigation water flow in x-coordinate and y-coordinate directions, respectively according to simulated surface water depth value and simulated values of the vertical integral average velocities of the irrigation wate

Abstract: Systems and methods are provided for modeling fluid flow in a turbomachine. A specification of a system including first and second blade rows is received. A wake profile from the first blade row is imposed on the second blade row to approximate an influence of the first blade row on the second blade row. Governing flow equations for the fluid flow in the second blade row are transformed in time. Flow variables of the transformed governing flow equations are represented as a Fourier series, and the Fourier series representation is substituted into the transformed governing flow equations to obtain a modified form of the transformed governing flow equations. A pseudo-time term is introduced into the modified form of the transformed governing flow equations. The modified form of the transformed governing flow equations is solved using the steady-state solution method to model the fluid flow in the second blade row.

Abstract: A simulation apparatus includes an 1D analysis unit which performs a low-dimensional fluid-flow analysis of material in an arithmetic object field of a kneading device, based on setting information including physical property of the material, and configuration data and an operation condition of the kneading device for kneading the material, an area selection unit which receives selection of an object area as an object of a high-dimensional fluid-flow analysis in the arithmetic object field, and a 3D analysis unit which extracts physical quantities of the material relating to the object area, based on a result of the low-dimensional fluid-flow analysis, and performs a high-dimensional fluid-flow analysis of the material in the object area, based on the extracted physical quantities and the setting information.

Abstract: A method for modeling a subsurface anomalous magnetization zone including the steps of generating a magnetic field model of the subsurface anomalous magnetization zone, inverting the magnetic field model; and generating a model of the sub-surface anomalous magnetization zone based on the inversion. The step of generating the magnetic field model include generating the magnetic field model from induced magnetization sources and remnant magnetization sources.

Abstract: A method includes accessing, via a processor, a first user selection relating to a location of a pipe segment of a piping model. The pipe segment includes data in a first format. The method includes accessing, via the processor, a second user selection relating to a point type based on a number of branches at the location of the pipe segment. The method includes determining, via the processor, a point associated with a route of the pipe segment. The point is based on the location and the point type. The route includes the point and at least one additional point. The method includes generating, via the processor, a representation of the route to be stored in a second format. The second format is associated with piping analysis.

Abstract: Systems and methods are provided for modeling fluid flow in a turbomachine. A specification of a system including at least a stator and a rotor of a turbomachine is received. The stator is coupled to the rotor via a profile-transformation (PT) interface. A flow profile for fluid flow across the PT interface is expanded or compressed based on a pitch ratio between the stator and the rotor. Flow variables of governing flow equations for the fluid flow in the system are represented as a Fourier series with spatially-varying Fourier coefficients. The Fourier series representation is substituted into the governing flow equations to obtain a modified form of the governing flow equations. The modified form of the governing flow equations is solved using a steady-state solution method to model the fluid flow in the system. The modeling utilizes an implicit solution discretization across the PT interface.

Abstract: An embodiment of present invention is computer-implemented method for designing a physical system constrained by a system of equations involving variables. The method includes partitioning the variables involved in the equations into fixed variables and unfixed variables, thereby setting the system to a restricted system with a degree of freedom equal to one. The method further includes computing a parameterized curve of solutions of the restricted system in the domain of the unfixed variables. The method further includes for at least one pair of unfixed variables, displaying the projection of the curve in the product of the domains of the pair. The method further includes navigating the solutions on the parameterized curve and representing, real-time, the current navigation position on the projection of the curve. Such a method improves the design of a physical system constrained by equations involving variables.