Prediction of void fraction in liquid-gas flow using gamma-rays


  • Grasielle da Silva Ali Mohammed IEN
  • Maria de Lourdes Moreira IEN
  • César Marques Salgado IEN


When the heat is transferred to a coolant inside a heat exchanger, bubbles can be formed due to the nucleate boiling. The excess heat, the nature of the tubes surface and the thermophysical properties of the fluid contribute to the growth and dynamics of the steam bubbles, influencing the heat transfer coefficient. Therefore, this report presents a methodology to estimate void fraction using the principles of gamma densitometry in a two-phase flow.




Como Citar

da Silva Ali Mohammed, G., Moreira, M. de L., & Marques Salgado, C. (2021). Prediction of void fraction in liquid-gas flow using gamma-rays. Instituto De Engenharia Nuclear: Progress Report, (4). Recuperado de



Application of Nuclear Techniques in Industry