A study of Three-Dimensional Natural Convection in High-Pressure Mercury Lamps—I. Parametric Variations with Horizontal Mounting (Record no. 814782)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02033aab a2200217 4500 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 240124b19901990|||mr||| |||| 00| 0 eng d |
| 022 ## - INTERNATIONAL STANDARD SERIAL NUMBER | |
| International Standard Serial Number | 0017-9310 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | P.Y. Chang. |
| 9 (RLIN) | 880156 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | W. Shyy. |
| 9 (RLIN) | 849883 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | J.T. Dakin |
| 9 (RLIN) | 880157 |
| 245 ## - TITLE STATEMENT | |
| Title | A study of Three-Dimensional Natural Convection in High-Pressure Mercury Lamps—I. Parametric Variations with Horizontal Mounting |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 483-493 p. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | A three-dimensional numerical model utilizing curvilinear coordinates and an efficient solution method has been used to investigate natural convection in horizontal, high-pressure mercury-vapor arctubes. For horizontal arcs, convection velocities are predominantly transverse to the arc axis. The associated upward bowing of the arc column results in non-uniform heating of the quartz wall which can substantially degrade the performance of the modern horizontal metal halide lamp. This investigation shows how the design parameters of the arctube, such as the mercury pressure, the curvature of the curved arctube, the offset electrode distance, and the electrode insertion length affect the temperature distribution in the arctube. Qualitatively, a downward curved arctube can move the hot arc core downward, and offset electrodes can improve temperatures near the ends of the arctube. The evolution of the design improvement of a 400 W high-pressure mercury lamp with the aim of centering the arc and having isotherms conform to the wall is achieved through better quantitative understanding of the transport characteristics. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Three-Dimensional Natural Convection |
| 9 (RLIN) | 879631 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | High-Pressure Mercury Lamps |
| 9 (RLIN) | 880158 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Parametric Variations |
| 9 (RLIN) | 880159 |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Horizontal Mounting |
| 9 (RLIN) | 880160 |
| 773 0# - HOST ITEM ENTRY | |
| Place, publisher, and date of publication | New York, U.S.A : Pergamon Subsidiary of Elsevier Science & Technology |
| Title | International Journal of Heat and Mass Transfer |
| International Standard Serial Number | 00179310 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://www.sciencedirect.com/science/article/pii/001793109090183U ">https://www.sciencedirect.com/science/article/pii/001793109090183U </a> |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Suppress in OPAC | No |
| Koha item type | Articles |
| -- | 14993 |
| -- | Mr. Muhammad Rafique Al Haj Rajab Ali (Late) |
| Not for loan | Home library | Serial Enumeration / chronology | Total Checkouts | Date last seen | Koha item type |
|---|---|---|---|---|---|
| Periodical Section | Vol.33, No.3 (March 1990) | 24/01/2024 | Articles |