碩士 / 國立成功大學 / 機械工程研究所 / 84 / A numerical study of laminar flow and heat transfer over a
multi-row (1~4 rows) and three-dimensional wavy-fin and tube
heat exchanger is presented. The effects of different geome-
trical parameters, including tube row numbers（1~4 rows）,w-
avy angles（8.95''、17.05''、 32.21''）and wavy heights（S=0.7 51
㎜, 1.500 ㎜, 3.003 ㎜） are investigated in detail for t- he
Reynolds number （based on the fin spacing and the front- al
velocity）ranging from 400 to 1200. Numerical results in-
dicate that the row effect is less important in a wavy fin as
compared to plain fin counterpart. It is also found that , f-
or equal wavy height, both the average Nusselt number and p-
ressure coefficient are increased as the wavy angle is incr-
eased ;while for equal wavy angle, they are decreased as th- e
wavy height is increased. The combination of（ ,S=1.500㎜）
gives the highest flow area goodness factor (j/f). A compar-
ison of the numerical results with the available experimenta- l
data is also presented.
| Identifer | oai:union.ndltd.org:TW/084NCKU0489025 |
| Date | January 1996 |
| Creators | Li-Kun Chen, 陳利崑 |
| Contributors | Jiin-Yuh Jang, 張錦裕 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 88 |
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