CFD Unit Library for Fluid Resistance Calculation
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Solution Overview
Problem
The existing methods for calculating fluid equipment resistance using CFD are time-consuming and inefficient, requiring the rebuilding of CFD models for each structure change in fluid equipment design.
Innovation Solution
A CFD numerical simulation-based fluid equipment resistance optimization algorithm that establishes a fluid equipment unit library, creates CFD models, and calculates resistance by fitting flow rate and resistance values using a formula, allowing for efficient recalculation of resistance without rebuilding models when the structure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a new CFD model is established for each structure change of fluid equipment, then the resistance calculation is accurate, but the calculation time increases and work efficiency decreases
Solution Approach 1:
The fluid equipment is divided into multiple standardized unit components (pipes, valves, fittings, etc.), each with its own pre-established CFD model and resistance-flow rate correspondence relationship. This segmentation allows the system to reuse existing models rather than creating new ones for each configuration change.
Solution Approach 2:
CFD models for various fluid equipment units are pre-established and stored in a library before actual resistance calculations are needed. The correspondence between flow rate and resistance for each unit is pre-calculated and stored, so that when a complete fluid equipment system is configured, the resistance can be directly obtained from the pre-stored data without performing new CFD simulations.
2Reliability
If CFD models are rebuilt for each structure change, then the resistance values are up-to-date, but the calculation time increases significantly
Solution Approach 1:
Instead of creating new CFD models from scratch for each structure change, the system uses pre-established CFD models as templates or copies. The pre-calculated resistance-flow rate correspondence relationships are reused and combined according to the new configuration, avoiding the time-consuming process of rebuilding models while maintaining accuracy.
Solution Approach 2:
The system handles structure changes by modifying parameters such as the quantity, connection sequence, and configuration of standardized units rather than rebuilding the entire CFD model. The pre-established correspondence relationships between flow rate and resistance for each unit are applied with different parameter values, allowing rapid adaptation to new configurations without model rebuilding.
Data Source
AI summary
The present invention relates to a CFD numerical simulation based fluid equipment resistance optimization algorithm, including the following steps: establishing a fluid equipment unit library; establishing CFD models of fluid equipment units in the fluid equipment unit library, and obtaining a correspondence between a flow rate and a resistance of each fluid equipment unit based on a CFD model of the fluid equipment unit; obtaining fluid equipment units that constitute to-be-tested fluid equipment, and a quantity and a connection sequence of the fluid equipment units; calculating a resistance of each fluid equipment unit based on a flow rate and a correspondence between the flow rate and the resistance of each fluid equipment unit; and adding up resistances of the fluid equipment units in the to-be-tested fluid equipment based on their connection sequence, to obtain a resistance of the to-be-tested fluid equipment.