Transient Natural Convection in a Large-diameter Horizontal Cylinder
Author: Pablo Sergio Beloff
Publisher:
Published: 1986
Total Pages: 100
ISBN-13:
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Author: Pablo Sergio Beloff
Publisher:
Published: 1986
Total Pages: 100
ISBN-13:
DOWNLOAD EBOOKAuthor: Howard G. Maahs
Publisher:
Published: 1964
Total Pages: 532
ISBN-13:
DOWNLOAD EBOOKAuthor: Ziaul Huque
Publisher:
Published: 1982
Total Pages: 116
ISBN-13:
DOWNLOAD EBOOKAuthor: Charles M. Spuckler
Publisher:
Published: 1971
Total Pages: 120
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DOWNLOAD EBOOKAuthor: WILLIAM R. MARTINI
Publisher:
Published: 1956
Total Pages: 200
ISBN-13:
DOWNLOAD EBOOKAuthor: James A. Liburdy
Publisher:
Published: 1980
Total Pages: 39
ISBN-13:
DOWNLOAD EBOOKA mathematical formulation of the governing equations for transient natural convection in a finite length horizontal cylinder is developed and constructed in finite difference form. The boundary conditions consist of radial heat flux for a specified thermal resistance, axial heat flux from one closed end and three different conditions at the other end to represent exposure to a hot convecting gas environment. The formulation is expressed in terms of the vorticity equations, energy equation and a set of vector potential equations. Solution is by the alternating direction implicit method for the vorticity and energy equations and the successive over relaxation method for the vector potential equations. Numerical experiments were run using the model to determine the local wall heat flux and the local wall temperatures. A heat transfer correlation is presented in terms of the Nusselt and Rayleigh numbers. Steady state conditions are obtained for the nondimensional time approximately equal to .005. Circumferential heat transfer coefficient variations are shown with larger values occurring near the top of the cylinder. Axial coefficients vary within approximately 10 percent with the largest values occurring near the center of the cylinder. With respect to test conditions at the AEDC facility, the convective components appear to be less than 10 percent of the radiative heat flux to the cylinder walls when a high temperature gas (air) is enclosed in the cylinder.
Author: Nusret Ugurhan Aydemir
Publisher:
Published: 1984
Total Pages: 202
ISBN-13:
DOWNLOAD EBOOKAuthor: James A. Liburdy
Publisher:
Published: 1982
Total Pages: 42
ISBN-13:
DOWNLOAD EBOOKAn experimental study examines the transient natural convective heat transfer in a liquid filled horizontal cylinder with a constant uniform heat flux. The transient and quasi-steady state response of the local and averaged Nusselt number is correlated with a modified Rayleigh number. The transient response is mapped against the stretch time scale represented by the product of the Fourier modulus and modified Rayleigh number. Internal fluid temperature probe measurements and flow visualization reveal boundary layer type flow along the side walls with increased temperature fluctuations near the wall. Unstable mixing zones occur neat the top and bottom of the cylinder which may be three dimensional.
Author: Sandra K. S. Boetcher
Publisher: Springer
Published: 2014-08-05
Total Pages: 57
ISBN-13: 3319081322
DOWNLOAD EBOOKThis book presents a concise, yet thorough, reference for all heat transfer coefficient correlations and data for all types of cylinders: vertical, horizontal, and inclined. This book covers all natural convection heat transfer laws for vertical and inclined cylinders and is an excellent resource for engineers working in the area of heat transfer engineering.
Author: Thomas Howard Kuehn
Publisher:
Published: 1976
Total Pages: 602
ISBN-13:
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