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Description: Frictional pressure drop for microchannels in two-phase flow

Reference: Tibiriça, C. B.; Rocha, D. M. ; Sueth JR., I. L. S. ; Bochio, G. ; Shimizu, G. K. K. ; Barbosa, M. C. ; Ferreira, S. S. . A complete set of simple and optimized correlations for microchannel flow boiling and two-phase flow applications. APPLIED THERMAL ENGINEERING, v. 126, p. 774-795, 2017.

Equations/Symbols:

Calculate:
Insert saturation temperature (Tsat), mass velocity (G), vapor quality (x) and tube diameter (D) and press 'Calculate'.

Fluid: R134a Water Air-water T_sat (K): p (Pa): G (kg/s/m²): x (-): D (m):
* pressure is used only for air-water flow.

Fluid properties: rhol=1,191.95 kg/m3 rhov=36.29 kg/m3 mul=0.000185310 Pa.s muv=0.000012141 Pa.s	Dimensionless numbers Rehom=4,051.64 ftp=0.05362 αhom=0.970	Frictional pressure drop (dp/dz)=7,611.53 Pa/m

Heat Transfer Research Group - HTRG
University of Sao Paulo - USP