A numerical analysis of frost formation under forced convection
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| Language: | English |
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The Ohio State University / OhioLINK
1970
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| Online Access: | http://rave.ohiolink.edu/etdc/view?acc_num=osu1272391966 |
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ndltd-OhioLink-oai-etd.ohiolink.edu-osu12723919662021-08-03T05:58:59Z A numerical analysis of frost formation under forced convection Parish, Harold Cheney <p>An analytical method was developed to predict the transient process of frost formation on a cold surface with moist air flowing over the cold surface in forced convection. The process of frost formation involves simultaneous heat and mass transfer. The transfer phenomena was calculated by solution of the momentum, thermal and diffusion boundary layer equations, along with the continuity equation, at several intervals in time. Each such solution was obtained for new boundary conditions created by the developing frost layer.</p><p>The boundary conditions were coupled in that the partial pressure of H<sub>2</sub>O vapor at the surface was required to correspond to the vapor pressure of water at the sur¬face temperature.</p><p>The solution to the boundary layer equations were obtained on a high speed digital computer, using an implicit finite-difference scheme.</p><p>The analytical method was tested by comparing predicted frost growth rate and effective frost conductivity with experimentally measured quantities. Although this was done only for the case of a cylinder with flow normal to the axis of the cylinder, the method is developed in such a way that it can be applied for an arbitrary geometry provided the external flow field can be described, either from potential flow theory or experimental results. An additional limitation requires that the surface does not contain a sharp edge. Neither does the method apply after boundary layer separation occurs or after the boundary layer transition from the laminar to the turbulent regime. The latter restriction does not exclude turbulence in the external flow field.</p> 1970 English text The Ohio State University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=osu1272391966 http://rave.ohiolink.edu/etdc/view?acc_num=osu1272391966 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| author |
Parish, Harold Cheney |
| spellingShingle |
Parish, Harold Cheney A numerical analysis of frost formation under forced convection |
| author_facet |
Parish, Harold Cheney |
| author_sort |
Parish, Harold Cheney |
| title |
A numerical analysis of frost formation under forced convection |
| title_short |
A numerical analysis of frost formation under forced convection |
| title_full |
A numerical analysis of frost formation under forced convection |
| title_fullStr |
A numerical analysis of frost formation under forced convection |
| title_full_unstemmed |
A numerical analysis of frost formation under forced convection |
| title_sort |
numerical analysis of frost formation under forced convection |
| publisher |
The Ohio State University / OhioLINK |
| publishDate |
1970 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=osu1272391966 |
| work_keys_str_mv |
AT parishharoldcheney anumericalanalysisoffrostformationunderforcedconvection AT parishharoldcheney numericalanalysisoffrostformationunderforcedconvection |
| _version_ |
1719428913277435904 |