NTRS - NASA Technical Reports Server

Back to Results
A comparative flow visualization study of thermocapillary flow in drops in liquid-liquid systemsExperiments are performed to visualize thermocapillary flow in drops in an immiscible host liquid. The host liquid used is silicone oil. Drops of three different liquids are used, viz, vegetable oil, water-methanol mixture anad pure methanol. Clear evidence of thermocapillary flow is seen in vegetable oil drops. For a mixture of water and methanol (approximately 50-50 by weight), natural convection is seen to dominate the flow outside the drop. Pure methanol drops exhibit thermocapillary flow, but dissolve in silicone oil. A small amount of water added to pure methanol significantly reduces the dissolution. Flow oscillations occur in this system for both isothermal and non-isothermal conditions.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Balasubramaniam, R.
(NASA Lewis Research Center Cleveland, OH, United States)
Rashidnia, N.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
AIAA PAPER 91-0311
Accession Number
Distribution Limits

Available Downloads

There are no available downloads for this record.
No Preview Available