Journal of Applied Mechanical Engineering

The liquid-liquid and gas-liquid two-phase flow studies with and without heat transfer

2^nd International Conference on Fluid Dynamics & Aerodynamics

October 19-20, 2017 | Rome, Italy

Faik Hamad

Teesside University, UK

Scientific Tracks Abstracts: J Appl Mech Eng

Abstract:

The dispersion of bubble/drops in liquid plays a vital role in many physical and chemical processes as the momentum, mass and energy transfer are largely controlled by the available interfacial area between the phases. The distribution of volume fraction and interfacial area concentration in a two-phase flow are influenced by bubble/drop size. The presence of bubbles/ drops affects the turbulence intensity in comparison to the single-phase flow. The drops breakage and coalescence are related to turbulence activities. The interactions between these various parameters contribute to the development of the flow behavior in the vertical pipe under investigation. The results on development of liquid-liquid (kerosene-water) up-flow in a vertical pipe of 77.8 mm inner diameter and 4.5 m length downstream of a 90o bend using optical and hot-film anemometry will be presented. The data have been collected at L/D ratios of 1, 16, 38 and 54 to investigate: The effect of bent on flow development in the pipe, the effect of volumetric quality and mixture velocity on flow parameters under fully developed condition at L/D=54, the effect of pipe inclination on various variables will discussed and the effect of introducing kerosene drops on two-phase flow turbulence will be discussed. The speech will also address the following work on gas-liquid multiphase flow: 1. The effect of the volumetric quality and mixture velocity on pressure drop of gas-liquid flow in horizontal pipes of different diameters are investigated experimentally, 2. The multiphase flow of air-oil droplet in porous media was studied to understand the pressure drop and filters performance, 3. Analysis of single phase/two-flow pressure drop in a hydrophobic small channel environment and the following two work on effect of multiphase flow on heat transfer will be introduced: 1. Investigation of impingement heat transfer for air-sand mixture flow and 2. Heat transfer from a cylinder in cross-flow of single and multiphase flows.

Biography :

Faik Hamad has completed his PhD from Bradford University, UK. He worked 4 years as Researcher and Teaching Fellow at Aberdeen University before he joined Teesside University as Senior Lecturer in 2011. He has published more than 30 papers in reputed journals and has been serving as Reviewer for a number of journals. His publications and expertise are in multiphase flow, renewable energy and heat transfer areas. He has won two grants to extend his research recently to new areas of microbubble generation and flow in porous media and microchannel.