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.

Abstract: Provided is an information processing apparatus including a crack leading edge candidate extraction unit configured to extract a crack leading edge candidate after progress of a crack in a structure, an elastic energy release rate calculation unit configured to calculate an elastic energy release rate that indicates an elastic energy released when the crack progresses to the extracted crack leading edge candidate, and a crack leading edge decision unit configured to decide a crack leading edge after the progress of the crack at least based on the elastic energy release rate. The crack leading edge candidate extraction unit extracts the crack leading edge candidate that satisfies a predetermined condition from crack leading edge candidates obtained in terms of a construction of the structure.

Abstract: A machining simulation device includes a cutting condition extraction unit, a tool type determine unit, a load calculation unit configured to calculate a spindle load, a load determination unit configured to determine whether the calculated spindle load is within a predetermined maximum load, an adjustment amount calculation unit configured to calculate an adjustment amount of the cutting condition when the calculated spindle load is determined not to be within the predetermined maximum load, and a display unit configured to display a result of the determination.

Abstract: Systems, apparatuses, and methods are described relating to object modeling, including, but not limited to, providing a convected perfectly matched layer (PML) expression as boundary condition for at least a portion of a model. The convected PML expression defines the boundary condition of the portion of the model in any arbitrary direction, allowing automatic definition of the boundary condition. The convected PML expression defines the boundary condition of the portion of the model in a constant or non-constant mean flow context.

Abstract: Embodiments of the present disclosure support a simulation of a plurality of processor core models. The processor core models are executed in parallel within a sliding time window of a defined size. Each processor core model is executed in a different corresponding thread and advances a local core time within the sliding time window. The sliding time window advances by updating a start time of the sliding time window based on the local core time of each processor core model. One or more hardware models and a simulation kernel are executed in a separate thread having a simulation time and simulation events. The start time of the sliding time window is updated based further on an event time of a next event of the simulation events scheduled in the separate thread.

Abstract: A system with generalized representation conversion capabilities, including at least one computing device in a client-server structure. A user may operate the client computing device to use a computer-aided design (CAD) software to implement geometric models for multiple objects, and request data from the server. A data store at the server stores necessary information of the system, which includes master representation information of a plurality of master representations (MRs), each MR representing one or more objects. When the user requests an individual representation of a selected object, a conversion module at the server may obtain, from the data store, the master representation information corresponding to the MR of the selected object being requested, and convert the master representation information to individual representation information, which corresponds to the individual representation of the selected object.

Abstract: Systems and methods are provided for modeling fluid flow in a turbomachine. A specification of a system is received. The system includes multiple passages, where the multiple passages include at least an inlet guide vane, a rotor, and a stator. A computational grid is generated with a processing system based on the received specification. Governing flow equations for the system are transformed based on inclination parameters, where each passage of the system has an associated inclination parameter. A rotational velocity of rotating passages included in the system is specified, and a time-step for stationary passages included in the system is specified. Time-steps for the rotating passages included in the system are computed, where the time-steps are computed based on pitch-ratios for adjacent passages of the system. A solution for the system is advanced in time by solving the transformed governing flow equations across the computational grid using computer-based numerical calculations.

Abstract: A method and system for forming a dynamic model for the behavior of machines from sensed data. The method and system generates a dynamic model of the machine by applying a canonical variate analysis (CVA) method to subspace system identification extending to parameter varying (LPV) systems and nonlinear (NL) systems in order to make implementation of the computation feasible and accurate.

Abstract: Systems and methods provide rendering of and interaction with digital building information modeling (BIM) models. The BIM models may be used for project management processes in the field. The BIM models may also be shared across multiple devices in the field, and received from cloud-based services in communication with the devices.

Abstract: A method and system are presented for use in scatterometry analysis for a patterned structure. According to this technique, a model of a patterned structure is provided comprising a selected number of virtual segment data pieces indicative of a respective number of segments of the patterned structure along Z-axis through the structure. Each of the segment data pieces is processed for determining a matrix [?n] comprising Z-axis derivatives of electromagnetic fields' response of the segment to incident field based on Maxwell's equations' solution, and transforming this matrix [?n] into an approximated response matrix [?n] corresponding to the electromagnetic field interaction between two different points spaced along the Z-axis. The transformation is preferably carried out by a GPU, and comprises embedding said matrix [?n] in a series expansion of said matrix exponential term [?n].

Abstract: Disclosed is a method for simulation of a microscopic flow of pre-crosslinked gel suspension liquid in a porous medium, including the steps of: establishing a simulation area of the porous medium based on a two-dimensional core CT slice image and subjecting the simulation area to numerical grid discretization; setting initial position and original shape of pre-crosslinked gel particles to generate virtual boundary mark points; marking the type of numeric grid nodes; calculating the force of the fluid on each virtual boundary mark point according to the momentum change of the numerical grid nodes on the boundary of the pre-crosslinked gel particles; calculating the contact force on each virtual boundary mark point using a particle contact action model; calculating the bending recovery force and the stretching recovery force for each virtual boundary mark point based on the current shape and original shape of the pre-crosslinked gel particles; and calculating the velocity and displacement of each virtual bounda

Abstract: The present disclosure relates to methods and systems for developing an equation of state model for petroleum fluids. In one embodiment, formation fluid from a plurality of depths within a wellbore may be analyzed to determine a change in a gas oil ratio with respect to depth. The change in the gas oil ratio may be employed to determine a ratio of solubility and entropy terms to a gravity term. The resulting ratio can be used to develop the equation of state model.

Abstract: Methods and apparatus are provided for performing massively parallel processing (MPP) large-scale combinations of time series data.

Abstract: A magnetic body simulation device includes a memory; and a processor coupled to the memory and the processor configured to decide a search section for searching a rotational coefficient of each magnetization vector in a plurality of elements included in a magnetic body, in a process of calculating the each rotational coefficient in a state in which magnetic energy of the magnetic body is minimized, to determine whether or not a first condition is satisfied in which a width of the decided search section is less than or equal to a certain length, and a first rotational coefficient decided by a predetermined method is included in the search section, and to calculate, when the first condition is satisfied, a static magnetic field vector corresponding to the first rotational coefficient by linear interpolation based on static magnetic field vectors at both ends of the search section.

Abstract: Systems and methods are provided for constructing a physical system. Characteristic data associated with a physical system is received. A model of the physical system is built based on the characteristic data. A nonlinear transient simulation of the physical system is performed using the model, where the simulation is performed over a plurality of time intervals. The simulation includes segmenting the plurality of time intervals into groups of time intervals, each group containing multiple time intervals, transmitting data associated with each group of time intervals to a different solving unit, and solving each of the groups of time intervals in parallel using the different solving units. A physical characteristic is determined based on results of the simulation, where the physical system is built or modified based on the simulation-determined physical characteristic.

Abstract: A method for designing off-axial optical system with freeform surfaces is provided. An initial system is established. A freeform surface of the off-axial optical system that needs to be solved is defined as a freeform surface. A number of feature rays are selected. A number of intersections of the feature rays with the freeform surface are calculated point by point based on a given object-image relationship and a vector form of Snell's law. A number of first feature data points are obtained from the intersections and surface fitted to obtain the freeform surface. All the freeform surfaces of the off-axial optical system that need to be solved are obtained by the method above to form a before-iteration off-axial optical system. The before-iteration off-axial optical system is used as the initial system for multiple iterations to obtain an after-iteration off-axial optical system.

Abstract: A method for designing freeform surface off-axial three-mirror imaging system with a real exit pupil is related. An initial system is established. A surface located before the real exit pupil is defined as surface M. A number of feature rays are selected. A number of ideal intersections of the feature rays with surface M are calculated. A number of intersections of the feature rays with each surface before surface M are calculated, and each surface before surface M is obtained by surface fitting. A number of intersections of the feature rays with surface M are calculated, and surface M is obtained by surface fitting. Surface M substitute for an initial surface, and repeating steps above, until the intersections of the feature rays with surface M are close to the ideal intersections, and the intersections of the feature rays with an image surface are close to the ideal image points.