Measurements of Shear Lift Force on a Bubble in Channel Flow in Microgravity
- Author:
- Motil, Brian J.
- Published:
- January 2003.
- Physical Description:
- 1 electronic document
- Additional Creators:
- Skor, Mark and Nahra, Henry K.
Online Version
- hdl.handle.net , Connect to this object online.
- Restrictions on Access:
- Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access - Summary:
- Under microgravity conditions, the shear lift force acting on bubbles, droplets or solid particles in multiphase flows becomes important because under normal gravity, this hydrodynamic force is masked by buoyancy. This force plays an important role in furnishing the detachment process of bubbles in a setting where a bubble suspension is needed in microgravity. In this work, measurements of the shear lift force acting on a bubble in channel flow are performed. The shear lift force is deduced from the bubble kinematics using scaling and then compared with predictions from models in literature that address different asymptotic and numerical solutions. Basic trajectory calculations are then performed and the results are compared with experimental data of position of the bubble in the channel. A direct comparison of the lateral velocity of the bubbles is also made with the lateral velocity prediction from investigators, whose work addressed the shear lift on a sphere in different two-dimensional shear flows including Poiseuille flow.
- Other Subject(s):
- Collection:
- NASA Technical Reports Server (NTRS) Collection.
- Note:
- Document ID: 20030014942.
E-13756.
NASA/TM-2003-212113.
AIAA Paper 2003-1300.
NAS 1.15:212113.
41st Aerospace Sciences Meeting and Exhibit; 6-9 Jan. 2003; Reno, NV; United States. - Terms of Use and Reproduction:
- Copyright, Distribution as joint owner in the copyright.
View MARC record | catkey: 15422966