Λεπτομέρειες βιβλιογραφικής εγγραφής
| Τίτλος: |
基于Fluent的浸渍式速冻机仿真模拟与参数优化. (Chinese) |
| Alternate Title: |
Simulation and parameter optimization of an immersion quick-freezer based on Fluent. (English) |
| Συγγραφείς: |
鲁易迅, 柳军, 肖纵纵 |
| Πηγή: |
Packaging & Food Machinery; 2026, Vol. 44 Issue 3, p1-12, 12p |
| Θεματικοί όροι: |
Cryogenic liquids, Computational fluid dynamics, Mathematical optimization, Computer simulation, Freezing, Heat exchanger efficiency, Fluid flow |
| Abstract (English): |
To address the issues of low heat transfer efficiency and unstable freezing quality in traditional freezing methods, a quaternary composite cryogenic liquid was adopted as the freezing medium. A 3D numerical model incorporating flow, heat transfer, and phase change was established using Ansys Fluent to investigate the effects of the inlet velocity of the cryogenic liquid and the nozzle diameter of the spraying system on the freezing behavior of pork. The results indicate that increasing the inlet velocity significantly accelerates the temperature drop at the center of the pork and shortens the time required to reach -18 ℃. However, when the inlet velocity exceeds 3 m/s, its enhancing effect gradually diminishes. Under a constant inlet velocity, increasing the nozzle diameter enhances local flow and convective heat transfer, but the improvement tends to stabilize when the nozzle diameter increases to 25 mm. The optimal coupling effect between flow intensity and flow field structure is achieved at an inlet velocity of 3 m/s and a nozzle diameter of 25 mm, resulting in a favorable match between enhanced convective heat transfer and rapid freezing efficiency. This study provides theoretical support for the structural optimization and operating parameter design of immersion quick-freezing equipment. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为改善传统冷冻传热效率低、冻结品质不稳定的问题, 采用四元复合冻眠液为冷冻介质, 基于Ansys Fluent软件 建立包含流动、传热及相变的三维数值模型, 研究冻眠液入口流速及喷淋系统喷嘴孔径对猪肉冻结行为的影响。结果表 明, 提高入口流速可显著加快猪肉中心点温度的下降速度, 并缩短达到-18 ℃的时间, 但当流速超过3 m/s后, 其强化作用 逐步减小;在入口流速一定的条件下, 增大喷嘴孔径可增强局部流动与对流换热, 但当孔径增至25 mm后, 效果逐渐稳 定;当入口流速为3 m/s、喷嘴孔径为25 mm时, 流动强度与流场结构的耦合作用达到最优, 实现对流换热强化与速冻效率 的较优匹配。研究为浸渍式速冻设备结构优化及运行参数设计提供理论支撑. [ABSTRACT FROM AUTHOR] |
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| Βάση Δεδομένων: |
Complementary Index |