| Effect of Pattern Parameters on Exhaust Performance of Tire Mould |
| Received:June 27, 2019 Revised:June 27, 2019 |
| DOI：10.12136/j.issn.1000-890X.2020.03.0219 |
| Key Words: tire mould；pattern parameter；exhaust performance；air hole；hole；gas flow field model；fluid dynamic analysis |
| Author Name | Affiliation | E-mail | | HU Haiming | College of Electromechanical Engineering,Qingdao University of Science and Technology | huhm64@163.com | | XU Fangxin* | College of Electromechanical Engineering,Qingdao University of Science and Technology | qdxufx@163.com |
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| Abstract: |
| The gas flow field model of tire mould was established by UG 3D modelling software，the flow field change under the pressure of second-stage tire molding was simulated by Fluent fluid dynamic analysis software，the influence of the number of gas holes and the shape and size of the pattern on exhaust performance was analyzed，and the change rule of velocity field，flow resistance coefficient，flow coefficient and turbulent kinetic energy was studied.The results showed that the mass flow of the gas flow field model was conserved.The flow direction of the gas in the cavity changed greatly after the gas hole was added in the central position，and the gas discharge was obviously accelerated，which decreased the flow resistance coefficient and increased the flow coefficient.The pattern connection with arc shape played a buffer role for the compressed gas flow near the gas hole，and reduced the backflow.The distribution of the turbulent kinetic energy was less affected by the number of the gas holes and the shape of the pattern，and the turbulent kinetic energy at the gas holes fluctuated greatly，which caused more energy loss and affected the exhaust performance. |
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