ANALYTICAL EXPRESSIONS FOR LIQUID-COLUMN VELOCITIES IN PIPELINES WITH ENTRAPPED GAS

Tijsseling A. S., Hou Q., BOZKUŞ Z.

ASME Pressure Vessels and Piping Conference, PVP-2015, Massachusetts, Amerika Birleşik Devletleri, 19 - 23 Temmuz 2015 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Doi Numarası: 10.1115/pvp2015-45184
  • Basıldığı Şehir: Massachusetts
  • Basıldığı Ülke: Amerika Birleşik Devletleri
  • Anahtar Kelimeler: mass oscillation, gas spring, entrapped gas, column separation, liquid slug, pipe filling, analytical solution, WATER-HAMMER, AIR POCKET
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

High pressures and high temperatures may arise in pipelines when a liquid column is suddenly accelerated into a gas pocket trapped at a closed end. A mass oscillation occurs that is described by nonlinear equations for both liquid and gas. Analytical expressions are derived for the uniform velocity of the liquid column, from which pressures and gas temperatures follow. The obtained results are validated against theoretical and experimental results published by fellow researchers.