Acoustic Streaming and Heat and Mass Transfer Enhancement
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Authors
Trinh, E.H.
Gopinath, A.
Subjects
ACOUSTIC STREAMING
MASS TRANSFER
HEAT TRANSFER
AUGMENTATION
BOUNDARIES
BUOYANCY
CAVITIES
CONVECTIVE FLOW
GRAVITATION
MICROGRAVITY
NUSSELT NUMBER
REYNOLDS NUMBER
STEADY STATE
ULTRASONIC RADIATION
MASS TRANSFER
HEAT TRANSFER
AUGMENTATION
BOUNDARIES
BUOYANCY
CAVITIES
CONVECTIVE FLOW
GRAVITATION
MICROGRAVITY
NUSSELT NUMBER
REYNOLDS NUMBER
STEADY STATE
ULTRASONIC RADIATION
Advisors
Date of Issue
1996-09
Date
Sep 01, 1996
Publisher
Language
Abstract
A second order effect associated with high intensity sound field, acoustic streaming has been historically investigated to gain a fundamental understanding of its controlling mechanisms and to apply it to practical aspects of heat and mass transfer enhancement. The objectives of this new research project are to utilize a unique experimental technique implementing ultrasonic standing waves in closed cavities to study the details of the generation of the steady-state convective streaming flows and of their interaction with the boundary of ultrasonically levitated near-spherical solid objects. The goals are to further extend the existing theoretical studies of streaming flows and sample interactions to higher streaming Reynolds number values, for larger sample size relative to the wavelength, and for a Prandtl and Nusselt numbers parameter range characteristic of both gaseous and liquid host media. Experimental studies will be conducted in support to the theoretical developments, and the crucial impact of microgravity will be to allow the neglect of natural thermal buoyancy. The direct application to heat and mass transfer in the absence of gravity will be emphasized in order to investigate a space-based experiment, but both existing and novel ground-based scientific and technological relevance will also be pursued.
Type
Conference Paper
Description
SEE ParentDocumentRecord|Ntt=19970000362 "Third Microgravity Fluid Physics Conference"; p. 791-796; NASA-CP-3338
Series/Report No
Department
Organization
Jet Propulsion Laboratory
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.