Multi-block structured grid data deep compression storage format
A technology for compressing storage format and grid data, applied in electrical digital data processing, special data processing applications, digital data information retrieval, etc. The effect of reducing bandwidth requirements, reducing storage space consumption, and improving security
Active Publication Date: 2021-06-15
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
These grid data storage formats all adopt the method of storing all grid points in all geometric data storage formats, and the data storage capacity is huge. With the increase of CFD numerical simulation fineness, the grid scale gradually increases. The storage and transmission of data bring great pressure, triggering a storage and transmission crisis
However, a large number of calculation states involved in optimization design, unsteady simulation, and load analysis will bring greater challenges to file storage of grid data. Repeated access to storage units will accelerate the aging of storage hardware and bring the risk of data loss, resulting in Storage costs are skyrocketing
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0055] The multi-block structure grid data deep compression storage format of this embodiment includes the following steps:
[0056] Step 100: if figure 1 As shown, the content to be stored is determined according to the deep compression data of the multi-block structure grid. The specific storage content is as follows:
[0057] 100a. Number of grid blocks N block = 3;
[0058] 100b. The logical information of all grid blocks, including the number of grid points NI of the three grid blocks in the logical directions I, J, and K i , NJ i 、NK i , and the number of grid windows NW of each of the 3 grid blocks i , i∈[1,3], NW i ≥6;
[0059] 100c. Logical information of all grid windows, including the start and end grid point numbers of the three grid windows in the logical direction and 3 types of grid windows s is the abbreviation of start, e is the abbreviation of end, i∈[1,3], w∈[1,NW i ];
[0060] 100d. Depth compressed geometry data for all grid windows l, m, ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a multi-block structured grid data deep compression storage format. The storage content of the format is the number of the grid blocks, logic information of all the grid blocks, logic information of all the grid windows and deep compression geometric data of all the grid windows; for a non-key space grid window, the depth compression geometric data of the grid window are three-dimensional space coordinates of all grid points on the window; for a key space grid window, the depth compression geometric data of the grid window are three-dimensional space coordinates of all grid points on four boundary ridges of the window; the storage sequence is the number of the grid blocks, the logic information of all the grid blocks, the logic information of all the grid windows and the deep compression geometric data of all the grid windows in sequence, and the storage mode is a binary type. According to the method, storage of all the grid point data is replaced by storage of part of the grid point data, a very small computer disk storage space is occupied, the data storage safety is improved, the structural grid data interaction mode is more flexible, and the data transmission efficiency is improved.
Description
technical field [0001] The invention belongs to the grid field of numerical simulation, in particular to the field of multi-block structured grid storage in CFD (Computational Fluid Dynamics), and specifically relates to a multi-block structured grid data storage format. Background technique [0002] CFD (Computational Fluid Dynamics) is one of the important means to study the mechanism of fluid mechanics, and it plays an increasingly important role in the design and performance evaluation of aerospace vehicles. CFD discretizes the flow field space by calculating the grid, and then solves the algebraic discrete equations to obtain flow variables, such as density, pressure, and temperature, and integrates along the surface of the aircraft to obtain the overall performance characteristics of the aircraft. Therefore, the calculation grid is the basis of CFD numerical simulation, which determines the calculation accuracy and calculation efficiency of numerical analysis. Accordi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/174G06F16/172
CPCG06F16/1744G06F16/172
Inventor 孙岩江盟孟德虹赵莹王昊邓彦增邓学霖
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT