摘要:
A method is provided for generating a quadrilateral mesh and a hexahedral mesh. First, a geometric model, which is an object of meshing, is input. The model is either two-dimensional or three-dimensional. Multiple bubbles of a plurality of types are generated in a region of the geometric model. The bubbles are moved according to an interbubble force defined by a predetermined rule, and the bubble count is controlled to adjust a neighboring relationship between the bubbles, so that the stable allocation of the bubbles are determined. By connecting the centers of bubbles of a specific type, a mesh is generated.
摘要:
A method for automatically generating a mesh (e.g., a quadrilateral mesh, a hexahedral mesh, and the like) includes inputting a geometric model to be meshed, generating a plurality of bubbles within a region of the geometric model, determining a stable allocation of the bubbles by moving the bubbles using a force defined by a potential field provided for the bubbles and controlling a number of the bubbles, and generating the mesh by connecting centers of adjacent bubbles.
摘要:
A curved surface to be meshed and a tensor at each point on the curved surface are inputted. Then, bubbles are generated in parametric space corresponding to the curved surface and in accordance with tensors transformed according to the relationship between the curved surface and parametric space. Following this, the bubbles are moved in parametric space by inter-bubble force defined by a predetermined rule, and are transformed by using the transformed tensors. The number of the bubbles is also controlled, so that stable locations for the bubbles in parametric space can be determined. Next, a connection relationship between mesh nodes, which are centers of the bubbles located in parametric space, is determined in parametric space. Finally, a mesh is generated on the curved surface by employing the positions and the connection relationship of the mesh nodes.
摘要:
It is one object of the present invention to form a conventional mesh as a sample in order to efficiently generate a high-quality mesh for a predetermined shape model.A mesh generation system 10 for generating a mesh used for finite element analysis comprises: a mesh characteristic extraction unit 11 for receiving a conventional mesh and extracting a characteristic therefrom; and a mesh generator 13 for receiving a target shape model for mesh generation, and for generating a mesh for the shape model based on the characteristic of the conventional mesh extracted by the mesh characteristic extraction unit 11.
摘要:
The present invention provides methods, apparatus and systems to improve the quality of the arrangement of nodes in a graphics display, for which a graphics image consisting of nodes and arcs is generated, and to increase the processing speed. Nodes are sequentially added and arranged in a display space, and each time a new node is added, a predetermined dynamic model is employed to correct the locations of the new node and of nodes that were previously arranged in the display space. The nodes are arranged beginning with a node having numerous adjacent arcs, so that the nodes that are arranged early in the process are located nearer the center of the display space. In the graphics image thus formed in the display space, arcs located within a predetermined distance of a specific node are curved so they detour around the node.
摘要:
A quadrilateral or a hexahedron is used for a virtual object. If, for example, a quadrilateral mesh is composed of perfect squares and a voronoi diagram is dual to them, it is considered that the voronoi diagram comprises the perfect squares whose centers are connected to be a quadrilateral mesh. Accordingly, the quadrilateral mesh is generated by filling the object to be meshed with quadrilateral virtual objects corresponding to the voronoi diagram and connecting their centers.
摘要:
Thread information is retained in a main memory. The thread information includes a bit string and last executed information. Each bit of the bit string is allocated to a thread, and the number and the value of the bit indicate the number of the thread and whether or not the thread is in an executable state, respectively. The last executed information is the number of a last executed thread. A processor rotates the bit string so that a bit indicating the last executed thread comes to the end of the bit string. It searches the rotated bit string for a bit corresponding to a thread in the executable state in succession from the top, and selects the number of the first obtained bit as the number of the next thread to be executed. Then, the thread information is updated by changing the value of the bit of this number to indicate not being executable, and setting the last executed information to the number of this bit. This operation is performed by using an atomic command.
摘要:
The present invention provides apparatus and methods to perform thermal management in a computing environment. In one embodiment, thermal attributes are associated with operations and/or processing components, and the operations are scheduled for processing by the components so that a thermal threshold is not exceeded. In another embodiment, hot and cool queues are provided for selected operations, and the processing components can select operations from the appropriate queue so that the thermal threshold is not exceeded.
摘要:
The present invention relates to a manufacturing method of obtaining a photoelectric converting device which can sufficiently maintain airtightness of a housing space for photocathode without degradation of the characteristics of the photocathode. In accordance with the manufacturing method, on the side wall end face of a lower frame and a bonding portion of an upper frame forming an envelope of the photoelectric converting device, a multilayered metal film of chromium and nickel is formed. In a vacuum space decompressed to a predetermined degree of vacuum and having a temperature not more than the melting point of indium, these upper and lower frames introduced therein are brought into close contact with each other with a predetermined pressure while sandwiching indium wire members, and accordingly, an envelope having a housing space whose airtightness is sufficiently maintained is obtained.
摘要:
A conveying device includes a cylindrical first roller, a cylindrical second roller that has a surface hardness higher than a surface hardness of the first roller, and a belt placed in a state surrounding either the first roller or the second roller. the conveying device moves an object to be conveyed by bringing the first roller and the second roller in pressure contact with each other via the belt and making the object pass through a nip portion formed of the belt and the first roller or the second roller facing the belt. A length in a lengthwise direction of an outer peripheral portion of the first roller is shorter than a length in a lengthwise direction of an outer peripheral portion of the second roller.