Numerical study of the effects of geometric parameters and nanofluid properties on heat transfer and pressure drop in helical tubes

Abstract

Highlights The effects of geometry and nanofluid properties on heat transfer and pressure drop of the helical coils were studied. The effects of nanoparticle diameter, temperature, Reynolds and volume fraction on heat transfer and friction were studied. Tube diameter, coils diameter and coils pitch was considered to investigate the heat transfer and friction. Heat transfer raised up by increasing the coil pitch, curvature ratio and volume fraction, and reduced by increasing nanoparticle diameter.

Keywords

• Nanofluid
• Heat transfer
• Helical tubes
• Tube heat exchanger