NDLI: A Study of Thermal Radiation Transfer in a Solar Thruster

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Venkateswaran, S. Thynell, S. T. Merkle, C. L.
Copyright Year	1991
Abstract	Combined convective and radiative heat transfer in an axisymmetric solar thruster is analyzed. In a solar thruster, focused solar energy is converted into thermal energy by volumetric absorption, resulting in a significant increase in the temperature of the propellant gas. The heated gas is then expanded through a propulsive nozzle in order to generate thrust. In the present theoretical analysis, submicron size particles are employed for providing the mechanism of solar energy absorption. The two-dimensional radiation problem is solved using both an exact integral method and the P1 -approximation. The overall energy transfer is solved iteratively by numerical means. The computational model is used to perform parametric studies of the effects of Boltzmann number, optical dimensions of the medium, and wall emissivity. The overall performance of the solar thruster is assessed by determining the thrust levels and the specific impulses of the device under different operating conditions.
Starting Page	932
Ending Page	938
Page Count	7
File Format	PDF
ISSN	00221481
e-ISSN	15288943
Journal	Journal of Heat Transfer
Volume Number	113
Issue Number	4
DOI	10.1115/1.2911224
Language	English
Publisher	The American Society of Mechanical Engineers
Publisher Date	1991-11-01
Access Restriction	Subscribed
Subject Keyword	Absorption Approximation Dimensions Emissivity Energy transformation Impulse (Physics) Mechanisms Nozzles Particulate matter Propellants Radiation (Physics) Radiative heat transfer Solar energy Temperature Theoretical analysis Thermal energy Thermal radiation Thrust
Content Type	Text
Resource Type	Article
Subject	Mechanical Engineering Mechanics of Materials Condensed Matter Physics Materials Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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