Flow Field Simulation Analysis of Train Siphon Toilet with Variable Pipe Diameter Based on the Investigation of Siphon Performance

Songzhi Yang, Yicheng Zhang, Hassan Hemida, Yu Wang, Dejian Ren

Research output: Contribution to journalConference articlepeer-review

Abstract

The performance of siphon toilets in trains with varied pipe profiles were investigated. The profiles of the siphon pipe are varied based on the diameter of the pipe along the pipe length. The flushing process was simulated by using CFD method. The starting time, the duration, the siphon mass flow rate, the negative pressure in the siphon pipe were recorded and selected as siphon performance indexes. The results showed that for the same type of siphon pipe, the siphon performance becomes worse with the increase of the maximum pipe diameter as the minimum pipe diameter is 45mm. The simulation confirms that the performance of the siphon toilet with the pipe diameter varying from large to small then to large is the best; the performance of the siphon with a pipe diameter varying from small to large then to small is the worst. The qualitative results may provide some suggestions for relevant industrial designs.

Original languageEnglish
Article number012099
JournalJournal of Physics: Conference Series
Volume1626
Issue number1
DOIs
Publication statusPublished - 6 Nov 2020
Event2020 4th International Conference on Electrical, Automation and Mechanical Engineering, EAME 2020 - Beijing, China
Duration: 21 Jun 202022 Jun 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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