Radiative characteristics of spherical cavities having partially or completely specular walls

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dc.contributor.authorKowsary, Farshaden
dc.contributor.committeechairMahan, J.R.en
dc.contributor.committeememberThomas, J.R.en
dc.contributor.committeememberVick, Brian L.en
dc.contributor.committeememberCampbell, James B. Jr.en
dc.contributor.committeememberJohnson, Lee W.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2015-07-09T20:43:20Zen
dc.date.available2015-07-09T20:43:20Zen
dc.date.issued1989en
dc.description.abstractThe radiant exchange problem for an isothermal spherical cavity having diffuse-specular walls is solved and the distribution of the local heat transfer for various opening angles and surface emissivities is obtained. Subsequently, the overall emission from the cavity (i. e., the apparent emissivity of the cavity) is calculated for various opening angles and surface conditions. In addition, the overall absorption characteristics of spherical cavities having purely specular walls is investigated analytically for the case of collimated radiation entering the cavity. Various opening angles and surface conditions are considered. The Monte Carlo method is utilized to support the results obtained from the analytical calculations. Results show that in spherical cavities the apparent emissivity is not very sensitive to the degree of specularity of the cavity wall. Also, there are situations in which the diffuse cavity is a more efficient emitter than a specular cavity. Absorption characteristic results show that for cavities having purely specular walls the absorption of collimated radiation is highly dependent on the angle of incidence of radiation on the opening for small opening angles.en
dc.description.degreePh. D.en
dc.format.extentxiv, 174 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/54222en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 21052584en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1989.K683en
dc.subject.lcshRadiant heating -- Researchen
dc.subject.lcshHolesen
dc.titleRadiative characteristics of spherical cavities having partially or completely specular wallsen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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