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Method for measuring heterogeneous texture parameter distribution of particle fluid two-phase flow system

A structural parameter, non-uniform technology used in machine/structural component testing, measuring devices, fluid dynamics testing, etc.

Inactive Publication Date: 2008-06-18
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of the existing Lagrangian method in which the interphase coupling of the two phases of the particle fluid is based on the averaging method, thereby ignoring the mesoscopic non-uniform structure in the grid, and to provide a method for measuring the non-uniformity of the two-phase flow system of the particle fluid Methods for Structural Parameter Distributions

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  • Method for measuring heterogeneous texture parameter distribution of particle fluid two-phase flow system
  • Method for measuring heterogeneous texture parameter distribution of particle fluid two-phase flow system
  • Method for measuring heterogeneous texture parameter distribution of particle fluid two-phase flow system

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0045] Such as figure 1 As shown in the granular fluid system with heterogeneous structure, the granular fluid two-phase flow reactor includes circulating fluidized bed or riser reactor, and may also be other granular fluid reactors with heterogeneous structure. against figure 1 The non-uniform structure of the particle fluid two-phase flow system shown, the method steps for measuring the parameter distribution of the structure are as follows figure 2 As shown, the specific steps are as follows:

[0046] Step 1. Determine the input conditions when the measurement method is implemented, specifically including: solid phase particle diameter d p , particle density ρ p , gas phase density ρ g , gas phase viscosity μ, equipment parameters: equipment height H and diameter W, etc., operating conditions: superficial fluid velocity u and particle i...

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Abstract

The invention discloses a method to measure the parameter distribution of the nonuniform structure of a particle-fluid two phase flow system, which comprises the following steps: 1. determination of the input conditions; 2. establishment of a two-phase equation of momentum and mass conservation of particle-fluid; 3. getting the local void ratio and the local void ratio gradient of particles according to the particles inside grids; 4. dividing the nonuniform structure inside the grids into combinations of local uniform structures according to the local information of the particles, and distributing the rates of flow of the fluid; 5.the distributed rates of flow of fluid are substituted in the equation of momentum and mass conservation to get the results. The problem of coupling between phases of particle-fluid is solved, and the inherent limitations of experience relation equations are overwhelmed.

Description

technical field [0001] The invention relates to a particle fluid two-phase flow system, in particular to a method for measuring the non-uniform structural parameter distribution of the particle fluid two-phase flow system. Background technique [0002] As the core of the process industry, the granular fluid system is widely used in the production process of coal utilization, oil and natural gas processing, steelmaking and ironmaking, cement, fertilizer and various powder materials. The granular fluid system is characterized by a complex spatiotemporal multi-scale non-uniform flow structure, and its non-uniform structure is the key to the study of flow, mass transfer and heat transfer processes in the reactor. The distribution and evolution of heterogeneous structural parameters in the reactor are the core concerns of reactor design, operation, control and scale-up. [0003] At present, the description of the flow parameters in the reactor is usually an empirical correlation...

Claims

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Application Information

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IPC IPC(8): G01N15/00G06F19/00G01M10/00
Inventor 许明葛蔚李静海
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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