Entropy generation in laminar fluid flow through a circular pipe

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Sahin A. Z., Ben-Mansour R.

Entropy, cilt.5, sa.5 SPEC., ss.404-416, 2003 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 5 Sayı: 5 SPEC.
  • Basım Tarihi: 2003
  • Doi Numarası: 10.3390/e5050404
  • Dergi Adı: Entropy
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.404-416
  • Anahtar Kelimeler: Entropy, Generation, Heating, Numerical, Pipe, Two-dimensional
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

A numerical solution to the entropy generation in a circular pipe is made. Radial and axial variations are considered. Navier-Stokes equations in cylindrical coordinates are used to solve the velocity and temperature fields. Uniform wall heat flux is considered as the thermal boundary condition. The distribution of the entropy generation rate is investigated throughout the volume of the fluid as it flows through the pipe. Engine oil is selected as the working fluid. In addition, water and Freon are used in a parametric study. The total entropy generation rate is calculated by integration over the various cross-sections as well as over the entire volume.