Modelling of the conjugate natural convection in a closed system with the radiant heating source radiant energy distribution by lambert's cosine law; Thermal Science; Vol. 22, iss. 1, pt. B
| Parent link: | Thermal Science Vol. 22, iss. 1, pt. B.— 2018.— [P. 591-601] |
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| Summary: | Title screen Various types of emitters are often used as energy sources in real engineering systems and technological processes. Investigations of heat transfer basic laws in such systems are of interest. We conducted mathematical modelling of conjugate heat transfer in a closed rectangular cavity under conditions of radiant energy source operating. The 2-D problem of conjugate natural convection in vorticity- -stream function-temperature dimensionless variables has been numerically solved by means of the finite difference method. Radiant energy distribution along the gaswall interfaces was set by Lamberts' cosine law. We obtained fields of temperature and stream functions in a wide range of governing parameters (Rayleigh number 104 ≤Ra ≤ 106 , the length of radiant heating source 0.15 ≤ D ≤ 0.6). Then we analyzed how heat retaining properties of finite thickness heat conducting walls made of different materials affect the heat transfer intensity. Differential characteristics distribution showed significant non-uniformity and non-stationarity of the conjugate heat transfer process under study. |
| Sprog: | engelsk |
| Udgivet: |
2018
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| Fag: | |
| Online adgang: | https://doi.org/10.2298/TSCI160120256K |
| Format: | Electronisk Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663994 |
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| 200 | 1 | |a Modelling of the conjugate natural convection in a closed system with the radiant heating source radiant energy distribution by lambert's cosine law |f G. V. Kuznetsov, A. E. Nee | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 600-601 (32 tit.)] | ||
| 330 | |a Various types of emitters are often used as energy sources in real engineering systems and technological processes. Investigations of heat transfer basic laws in such systems are of interest. We conducted mathematical modelling of conjugate heat transfer in a closed rectangular cavity under conditions of radiant energy source operating. The 2-D problem of conjugate natural convection in vorticity- -stream function-temperature dimensionless variables has been numerically solved by means of the finite difference method. Radiant energy distribution along the gaswall interfaces was set by Lamberts' cosine law. We obtained fields of temperature and stream functions in a wide range of governing parameters (Rayleigh number 104 ≤Ra ≤ 106 , the length of radiant heating source 0.15 ≤ D ≤ 0.6). Then we analyzed how heat retaining properties of finite thickness heat conducting walls made of different materials affect the heat transfer intensity. Differential characteristics distribution showed significant non-uniformity and non-stationarity of the conjugate heat transfer process under study. | ||
| 461 | 1 | |t Thermal Science | |
| 463 | 1 | |t Vol. 22, iss. 1, pt. B |v [P. 591-601] |d 2018 | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a infrared emitter | |
| 610 | 1 | |a natural convection | |
| 610 | 1 | |a conjugate heat transfer | |
| 610 | 1 | |a mathematical modelling | |
| 610 | 1 | |a Lambert's cosine law | |
| 610 | 1 | |a инфракрасные излучатели | |
| 610 | 1 | |a естественная конвекция | |
| 610 | 1 | |a сопряженный теплообмен | |
| 610 | 1 | |a математическое моделирование | |
| 610 | 1 | |a закон Ламберта | |
| 700 | 1 | |a Kuznetsov |b G. V. |c Specialist in the field of heat power energy |c Professor of Tomsk Polytechnic University, Doctor of Physical and Mathematical Sciences |f 1949- |g Geny Vladimirovich |3 (RuTPU)RU\TPU\pers\31891 |9 15963 | |
| 701 | 1 | |a Nee |b A. E. |c specialist in the field of thermal engineering |c Associate Professor of Tomsk Polytechnic University, Candidate of Sciences |f 1990- |g Aleksandr Eduardovich |3 (RuTPU)RU\TPU\pers\35708 |9 18868 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа энергетики |b Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова) |3 (RuTPU)RU\TPU\col\23504 |
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