Departure-site spacing for liquid columns falling between horizontal circular tubes

Kai Lü, Xiaofei Wang, Ying Zhang, Maogang He

Research output: Contribution to journalArticlepeer-review

Abstract

The departure-site spacing between liquid columns was measured for water, ethylene glycol, water and ethylene glycol binary mixture with volume fraction 0.5/0.5 on eight different orifice configurations with a visualization method. The influences of flow rate, tube spacing, surface structure and orifice configuration on departure-site spacing were investigated for the subcooled liquid columns flowing between horizontal tubes at the ambient temperature and normal pressure. Under the conditions of this study, the departure-site spacing increases with the decrease of Re for high-Ga flow. For a fixed Re, the departure-site spacing increases with the increase of tube spacing. The surface structure and thermo-physical properties of fluid influence the departure-site spacing. Bigger hole diameter brings smaller departure-site spacing at a fixed distance between adjacent holes, while larger distance between adjacent holes leads to larger departure-site spacing at a fixed hole diameter.

Original languageEnglish (US)
Pages (from-to)740-745
Number of pages6
JournalHuagong Xuebao/CIESC Journal
Volume63
Issue number3
DOIs
StatePublished - Mar 1 2012
Externally publishedYes

Keywords

  • Departure-site spacing
  • Horizontal falling-film evaporation tube
  • Surface structure
  • Tube spacing

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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