Numerical investigation for convective heat transfer and friction factor under pulsating flow conditions

Aslan E., ÖZSABAN M., Ozcelik G., Guven H. R.

11th International Conference on Computational Heat, Mass and Momentum Transfer (ICCHM2T), Cracow, Polonya, 21 - 24 Mayıs 2018, cilt.240 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 240
  • Doi Numarası: 10.1051/matecconf/201824001003
  • Basıldığı Şehir: Cracow
  • Basıldığı Ülke: Polonya
  • Recep Tayyip Erdoğan Üniversitesi Adresli: Evet

Özet

For pulsating flow, the behaviours of the convective heat transfer and friction factor for a periodic corrugated channel are investigated numerically. The finite volume method is used in the numerical study. Three different Reynolds Averaged Numerical Simulation based turbulence models, namely the k-omega model, the Shear Stress Transport (SST) model and the transition SST model are used and compared. The results are also compared with the previous experiments for non-pulsating flow. Analyses are conducted for air flow through a corrugated channel which has sharp corrugation peaks with an inclination angle of 30 degrees and a 5mm minimum channel height. Reynolds number is changed in the range 6294 to 7380, while keeping the Prandtl number constant at 0.70. A sinusoidal pulsatile flow condition which is F=400 and u(A)*=0.5 is used. Variations of the Nusselt number and the friction factor with the Reynolds number are studied. Non-pulsating flow results and pulsating flow results are compared with each other.