서지주요정보
임의 각도의 코너에서의 대류열전달 = Convective heat transfer near a corner of arbitrary angle
서명 / 저자 임의 각도의 코너에서의 대류열전달 = Convective heat transfer near a corner of arbitrary angle / 김만회.
저자명 김만회 ; Kim, Man-Hoe
발행사항 [서울 : 한국과학기술원, 1988].
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등록번호

4105260

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 8801

도서상태

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반납예정일

#### 초록정보

We consider the laminar convective heat transfer near a corner formed by two quarter-infinite flat plates. The corner layer equations and their appropriate boundary conditions are formulated based on the method of matched asymptotic expansions. Suitable transformations are used for the corner layer variables, to impose the asymptotic boundary conditions at true infinity and increase the resolution near the corner where large gradients are expected. The flow and temperature profiles have been determined from the numerical solutions by the finite difference method. Firstly, we analyze the forced convection in streamwise corner of an arbitrary angle on the basis of the boundary-layer approximations. Two different constant wall temperature conditions are considered: 1) Both wall are heated and 2) one wall heated and the other cooled. Numerical results for temperature distribution and rate of heat transfer are presented for corners with vertex angles ranging from 45˚ to 315˚ and the several Pandtl numbers. Secondly, the laminar natural convection near a rectangular corner formed by the intersection of two vertical quarter-infinite flat plates is considered. For large Grashof number, the "boundary-layer" equations in the corner layer are derived and appropriate boundary conditions are determined using the method of matched asymptotic expansions. Solutions of the corner layer equations are numerically obtained for velocity and temperature distributions for Prandtl numbers 0.72 and 7.0. The cross-flow pattern is quite different from the high-Reynolds number flow along the corner; the simple inflow toward the corner appears, and the swirling motion in the corner is not found. Thirdly, the laminar natural convective heat transfer near a corner of an arbitrary angle is presented. The analysis is general to any corner angle except the limiting angles 0˚ and 360˚. The velocity and temperature distributions for corner angles of 90˚, 135˚, 225˚, and 270˚ with the Prandtl numbers 0.72 and 7.0 are obtained numerically by the alternating direction implicit scheme. The cross-flow patterns are shown to exhibit a simple antisymmetric behavior for angles equidistant from 180˚.

#### 서지기타정보

청구기호 {DME 8801 iv, 140 p. : 삽도 ; 26 cm 한국어 부록 : A, 임의 각도의 corner에서의 유동장에 대한 지배방정식과 경계조건. - B, 경계치 문제(3-10)의 해. - C, Second-order 의 경계층방정식. - D, Computer program 저자명의 영문표기 : Man-Hoe Kim 지도교수의 한글표기 : 김문언 지도교수의 영문표기 : Moon-Uhn Kim 학위논문(박사) - 한국과학기술원 : 기계공학과, 참고문헌 : p. 64-71 Heat --Convection, natural. Finite differences. Boundary layer. Reynolds number. 대류 열전달. --과학기술용어시소러스 자연 대류. --과학기술용어시소러스 강제 대류. --과학기술용어시소러스 유한 차분법. --과학기술용어시소러스 경계층. --과학기술용어시소러스 Heat --Transmission.
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