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Method for predicting particle fouling thermal resistance by using Euler method based on numerical simulation

A numerical simulation, fouling thermal resistance technology, applied in CAD numerical modeling, special data processing applications, electrical digital data processing, etc., to achieve reliable data support, ensure accuracy, and simplify complex problems.

Inactive Publication Date: 2021-05-14
NANJING YANGTZE RIVER URBAN AGCHITECTURAL DESIGN
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Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a method for predicting the thermal resistance of particles and dirt based on numerical simulation using the Euler method. problems and other advantages

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  • Method for predicting particle fouling thermal resistance by using Euler method based on numerical simulation
  • Method for predicting particle fouling thermal resistance by using Euler method based on numerical simulation
  • Method for predicting particle fouling thermal resistance by using Euler method based on numerical simulation

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Embodiment Construction

[0068] In order to further understand and implement the present invention, the present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0069] combine figure 1 , a method for predicting the thermal resistance of particulate dirt based on numerical simulation using the Euler method in this embodiment, the steps are as follows:

[0070] S1. Establish grid model

[0071] Based on the specific shape and size of the heat exchange equipment, a mesoscopic three-dimensional geometric model of the sewage heat exchange equipment is established. According to the actual situation in the calculation domain, ICEM CFD software is used to divide the unstructured tetrahedral mesh, so as to realize the discrete calculation domain.

[0072] In order to accurately simulate the flow field of sewage in the heat exchange equipment, grid independence verification must be carried out. The specific verification method is as foll...

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Abstract

The invention discloses a method for predicting particle fouling thermal resistance by using an Euler method based on numerical simulation. The method comprises the following steps: establishing a grid model, establishing a sedimentary model, establishing a stripping model, establishing a fouling thermal resistance model, performing numerical simulation, processing data, verifying the model and the like, and establishing a particle fouling sedimentary model from four sedimentary mechanisms; a dirt stripping model is established according to an empirical formula, a dirt thermal resistance model is established by utilizing a dirt thermal resistance formula, and the model is verified by adopting an experimental value, so that the accuracy of the model is ensured, a dirt thermal resistance value on a heat exchange surface at any moment in the future can be predicted, and the prediction of the particulate dirt thermal resistance in the heat exchange equipment is realized. Reliable data support is provided for the design of the heat exchange system.

Description

technical field [0001] The invention relates to a prediction method, in particular to a method for predicting particle dirt thermal resistance based on numerical simulation using the Euler method, and belongs to the technical field of heat exchange systems. Background technique [0002] The heat transfer capacity of the heat exchanger mainly depends on the total heat transfer coefficient of the heat exchanger. When there is dirt on the heat transfer surface, the heat transfer coefficient of the heat exchanger will decrease, resulting in an increase in the operating energy consumption of the heat exchange system, and the dirt will also increase. Corrosion of equipment, resulting in economic losses, and even lead to a series of safety accidents. There is a lack of theoretical guidance in the current design process of sewage source heat pump systems, and designers usually use fouling factors to account for the presence of fouling, which leads to additional costs for heat exchan...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06F30/28G06F111/10G06F113/08G06F119/14G06F119/08
CPCG06F30/28G06F2111/10G06F2119/14
Inventor 任体秀马良栋江丽徐阳
Owner NANJING YANGTZE RIVER URBAN AGCHITECTURAL DESIGN
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