ANSYS-based heat exchanger tube bundle modal analysis method in liquid filling state
A technology of modal analysis and heat exchange tube bundles, applied in constraint-based CAD, instrumentation, geometric CAD, etc., can solve problems such as heat exchanger failure, and achieve the effect of preventing structural resonance damage and accurate structural natural frequency and mode shape
Active Publication Date: 2020-09-18
TIANHUA INST OF CHEM MACHINERY & AUTOMATION
View PDF7 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0010] In summary, the purpose of the present invention is to solve the problem of how to improve the efficiency of mass and heat transfer in the design process of existing heat exchangers, while ignoring the influence of natural frequency on heat exchange, which is easily caused by fluid-induced vibration of heat exchange tubes. In view of the technical problems of heat exchanger failure accidents, a method for modal analysis of heat exchanger tube bundles in the liquid-filled state based on ANSYS is proposed
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 Construction
[0039] The structure of the present invention will be further described below in conjunction with the accompanying drawings and preferred specific embodiments of the present invention.
[0040] The method for modal analysis of heat exchanger tube bundles in a liquid-filled state based on ANSYS disclosed by the present invention includes the following steps:
[0041] (1) Simplify the heat exchanger model in engineering use, and perform three-dimensional modeling operations on the heat exchange tube bundle and shell model of the heat exchanger model with the help of the three-dimensional modeling software SOLIDWORKS, for example, figure 1 with figure 2 The structure shown in Fig. 2 is shown in Fig. The computational domain model is exported and saved as a .x_t format file; the parameters set when the 3D modeling software SOLIDWORKS performs 3D modeling operations on the heat exchange tube bundle and the shell model of the heat exchanger model can specifically include: shell si...
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 an ANSYS-based heat exchanger tube bundle modal analysis method in a liquid filling state, and relates to the technical field of design simulation analysis methods of heat exchangers in industry. The problem that the influence of inherent frequency on heat exchange is ignored in the design process of an existing heat exchanger is solved; the technical problem of heat exchanger failure accidents caused by heat exchange tube vibration induced by fluid is easily solved. The method comprises the following steps: performing three-dimensional modeling operation on a heat exchange tube bundle and a shell model of a heat exchanger model by means of SOLIDWORKS, and importing the heat exchange tube bundle and the shell model into ANSYS WORKBENCH software to define attributesof materials used by a heat exchanger structure; meshing the three-dimensional simulation model, performing simulation operation in a CFX calculation module in WORKBENCH software to obtain temperatureand pressure distribution characteristics of the conduction oil, inputting solving settings in ANSYS WORKBENCH software, and setting a frequency extraction order and a solving frequency range; the influence of liquid on the inherent frequency and vibration mode of the structure is analyzed, the influence of a liquid filling medium and temperature on the modal characteristics of the heat exchangetube bundle structure is analyzed, and an important dynamic basis is provided for preventing resonance of the structure.
Description
technical field [0001] The invention relates to the technical field of design simulation analysis methods for heat exchangers in industry. Background technique [0002] Heat exchanger is an industrial equipment that can transfer energy between various fluids, and is widely used in engineering fields such as electric power, transportation, petroleum, metallurgy, nuclear power, air conditioning and refrigeration. In the actual work of the heat exchanger, the impact of the fluid on the heat exchanger mainly includes longitudinal excitation and lateral scour. In actual situations, the vibration state is complex, including stable vibration of the fluid, transient vibration and resonance of each work piece, etc., which will excite the heat exchanger. The calculation of natural frequency is very important for the study of flow-induced vibration of heat exchangers. However, in the design process of heat exchangers, how to improve the efficiency of mass transfer and heat transfer ha...
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 IPC IPC(8): G06F30/18G06F30/23G06F111/04G06F113/14G06F119/08G06F119/14
CPCG06F30/18G06F30/23G06F2111/04G06F2113/14G06F2119/08G06F2119/14
Inventor 张毅鹏孙中心张潇引
Owner TIANHUA INST OF CHEM MACHINERY & AUTOMATION