<P><B>Abstract</B></P> <P>ASFs (Annular stepped fins) require less material than ADFs (annular disc fins) while retaining the ability to produce the same cooling rate in a convection environment. A simple analysis was de...
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https://www.riss.kr/link?id=A107632758
2014
-
SCOPUS,SCIE
학술저널
733-748(16쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>ASFs (Annular stepped fins) require less material than ADFs (annular disc fins) while retaining the ability to produce the same cooling rate in a convection environment. A simple analysis was de...
<P><B>Abstract</B></P> <P>ASFs (Annular stepped fins) require less material than ADFs (annular disc fins) while retaining the ability to produce the same cooling rate in a convection environment. A simple analysis was developed for ASFs that considered radiative heat transfer and heat generated by a nuclear reactor through linearization of the radiation terms. The linearized equations were solved by exact and approximate analytical methods. Without any linearization, a new closed-form analysis was established for the temperature profile with the help of the differential transform method. An integral differential transform method was introduced to determine the actual heat-transfer rate when heat was generated inside an ASF under nonlinear radiation surface conditions. The temperature results obtained using this analytical approach were compared with those obtained from a finite-difference analysis, and were in excellent agreement. The fin performance was defined as a function of the heat generated for a given set of design conditions. An optimization study with varying heat generation was carried out to compare the performance of ADFs and ASFs, which highlighted the superior aspects of an annular fin design.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A new analytical model for ASF under heat generation and radiation heat transfer. </LI> <LI> Exact and approximate analysis for linearization of governing equation. </LI> <LI> A high accuracy obtained from approximate analysis. </LI> <LI> Fin heat transfer for nonlinear surface conditions and heat generation. </LI> <LI> Calculation of maximum heat transfer as a function of heat generation parameter. </LI> </UL> </P>
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